Instrumented the living s*** out of the graphql.

gqlgen

Squashed commit of the following:

commit 162ccf6bfb
Author: Gisle Aune <dev@gisle.me>
Date:   Fri May 17 11:51:23 2019 +0200

    The great module madness continus, now with pointers.

commit 7e3dc49635
Author: Gisle Aune <dev@gisle.me>
Date:   Thu May 16 15:57:08 2019 +0200

    Basic stuff, doesn't compile

Dockerfile

@@ -1,16 +1,12 @@
 ## 1. Build Server
-# Use Go 1.10
+# Use Go 1.12
-FROM golang:1.11 AS build-server
+FROM golang:1.12 AS build-server
 
 # Load repository into docker
-WORKDIR /go/src/git.aiterp.net/rpdata/api/
+WORKDIR /project/
 COPY . .
-RUN rm -rf ./vendor
 
 # Install build tools and dependencies
-RUN go get -u github.com/golang/dep/cmd/dep
-RUN go get -u github.com/vektah/gorunpkg
-RUN dep ensure
 RUN go generate ./...
 
 # Build server and tools (CGO disabled to make them 100% static)

Gopkg.lock

@@ -1,250 +0,0 @@
-# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
-
-
-[[projects]]
-  name = "github.com/99designs/gqlgen"
-  packages = [
-    ".",
-    "cmd",
-    "codegen",
-    "codegen/templates",
-    "complexity",
-    "graphql",
-    "graphql/introspection",
-    "handler",
-    "internal/gopath"
-  ]
-  revision = "636435b68700211441303f1a5ed92f3768ba5774"
-  version = "v0.5.1"
-
-[[projects]]
-  name = "github.com/agnivade/levenshtein"
-  packages = ["."]
-  revision = "3d21ba515fe27b856f230847e856431ae1724adc"
-  version = "v1.0.0"
-
-[[projects]]
-  name = "github.com/davecgh/go-spew"
-  packages = ["spew"]
-  revision = "8991bc29aa16c548c550c7ff78260e27b9ab7c73"
-  version = "v1.1.1"
-
-[[projects]]
-  name = "github.com/dgrijalva/jwt-go"
-  packages = ["."]
-  revision = "06ea1031745cb8b3dab3f6a236daf2b0aa468b7e"
-  version = "v3.2.0"
-
-[[projects]]
-  branch = "master"
-  name = "github.com/dustin/go-humanize"
-  packages = ["."]
-  revision = "bb3d318650d48840a39aa21a027c6630e198e626"
-
-[[projects]]
-  branch = "master"
-  name = "github.com/globalsign/mgo"
-  packages = [
-    ".",
-    "bson",
-    "internal/json",
-    "internal/sasl",
-    "internal/scram"
-  ]
-  revision = "f76e4f9da92ecd56e3be26f5ba92580af1ef97b4"
-
-[[projects]]
-  name = "github.com/go-ini/ini"
-  packages = ["."]
-  revision = "ace140f73450505f33e8b8418216792275ae82a7"
-  version = "v1.35.0"
-
-[[projects]]
-  name = "github.com/go-sql-driver/mysql"
-  packages = ["."]
-  revision = "d523deb1b23d913de5bdada721a6071e71283618"
-  version = "v1.4.0"
-
-[[projects]]
-  name = "github.com/gorilla/websocket"
-  packages = ["."]
-  revision = "66b9c49e59c6c48f0ffce28c2d8b8a5678502c6d"
-  version = "v1.4.0"
-
-[[projects]]
-  name = "github.com/graph-gophers/dataloader"
-  packages = ["."]
-  revision = "78139374585c29dcb97b8f33089ed11959e4be59"
-  version = "v5"
-
-[[projects]]
-  name = "github.com/hashicorp/golang-lru"
-  packages = [
-    ".",
-    "simplelru"
-  ]
-  revision = "20f1fb78b0740ba8c3cb143a61e86ba5c8669768"
-  version = "v0.5.0"
-
-[[projects]]
-  branch = "master"
-  name = "github.com/jmoiron/sqlx"
-  packages = [
-    ".",
-    "reflectx"
-  ]
-  revision = "0dae4fefe7c0e190f7b5a78dac28a1c82cc8d849"
-
-[[projects]]
-  name = "github.com/minio/minio-go"
-  packages = [
-    ".",
-    "pkg/credentials",
-    "pkg/encrypt",
-    "pkg/s3signer",
-    "pkg/s3utils",
-    "pkg/set"
-  ]
-  revision = "3d2d02921f0510e9d1f66ef77a265b8dddd36992"
-  version = "6.0.0"
-
-[[projects]]
-  branch = "master"
-  name = "github.com/mitchellh/go-homedir"
-  packages = ["."]
-  revision = "b8bc1bf767474819792c23f32d8286a45736f1c6"
-
-[[projects]]
-  name = "github.com/opentracing/opentracing-go"
-  packages = [
-    ".",
-    "log"
-  ]
-  revision = "1949ddbfd147afd4d964a9f00b24eb291e0e7c38"
-  version = "v1.0.2"
-
-[[projects]]
-  name = "github.com/pkg/errors"
-  packages = ["."]
-  revision = "645ef00459ed84a119197bfb8d8205042c6df63d"
-  version = "v0.8.0"
-
-[[projects]]
-  name = "github.com/pmezard/go-difflib"
-  packages = ["difflib"]
-  revision = "792786c7400a136282c1664665ae0a8db921c6c2"
-  version = "v1.0.0"
-
-[[projects]]
-  name = "github.com/sirupsen/logrus"
-  packages = ["."]
-  revision = "c155da19408a8799da419ed3eeb0cb5db0ad5dbc"
-  version = "v1.0.5"
-
-[[projects]]
-  name = "github.com/stretchr/testify"
-  packages = ["assert"]
-  revision = "f35b8ab0b5a2cef36673838d662e249dd9c94686"
-  version = "v1.2.2"
-
-[[projects]]
-  name = "github.com/urfave/cli"
-  packages = ["."]
-  revision = "cfb38830724cc34fedffe9a2a29fb54fa9169cd1"
-  version = "v1.20.0"
-
-[[projects]]
-  branch = "master"
-  name = "github.com/vektah/gqlparser"
-  packages = [
-    ".",
-    "ast",
-    "gqlerror",
-    "lexer",
-    "parser",
-    "validator",
-    "validator/rules"
-  ]
-  revision = "14e83ae06ec152e6d0afb9766a00e0c0918aa8fc"
-
-[[projects]]
-  branch = "master"
-  name = "golang.org/x/crypto"
-  packages = [
-    "argon2",
-    "blake2b",
-    "ssh/terminal"
-  ]
-  revision = "d6449816ce06963d9d136eee5a56fca5b0616e7e"
-
-[[projects]]
-  branch = "master"
-  name = "golang.org/x/net"
-  packages = [
-    "context",
-    "idna",
-    "lex/httplex"
-  ]
-  revision = "a35a21de978d84ffc92f010a153705b170b2f9d1"
-
-[[projects]]
-  branch = "master"
-  name = "golang.org/x/sys"
-  packages = [
-    "unix",
-    "windows"
-  ]
-  revision = "2f57af4873d00d535c5c9028850aa2152e6a5566"
-
-[[projects]]
-  name = "golang.org/x/text"
-  packages = [
-    "collate",
-    "collate/build",
-    "internal/colltab",
-    "internal/gen",
-    "internal/tag",
-    "internal/triegen",
-    "internal/ucd",
-    "language",
-    "secure/bidirule",
-    "transform",
-    "unicode/bidi",
-    "unicode/cldr",
-    "unicode/norm",
-    "unicode/rangetable"
-  ]
-  revision = "f21a4dfb5e38f5895301dc265a8def02365cc3d0"
-  version = "v0.3.0"
-
-[[projects]]
-  branch = "master"
-  name = "golang.org/x/tools"
-  packages = [
-    "go/ast/astutil",
-    "go/buildutil",
-    "go/internal/cgo",
-    "go/loader",
-    "imports",
-    "internal/fastwalk"
-  ]
-  revision = "677d2ff680c188ddb7dcd2bfa6bc7d3f2f2f75b2"
-
-[[projects]]
-  name = "google.golang.org/appengine"
-  packages = ["cloudsql"]
-  revision = "b1f26356af11148e710935ed1ac8a7f5702c7612"
-  version = "v1.1.0"
-
-[[projects]]
-  name = "gopkg.in/yaml.v2"
-  packages = ["."]
-  revision = "5420a8b6744d3b0345ab293f6fcba19c978f1183"
-  version = "v2.2.1"
-
-[solve-meta]
-  analyzer-name = "dep"
-  analyzer-version = 1
-  inputs-digest = "eb8fc099a909f5d8f756b24fbcb6cc2856e132bd3ed16b8fe512f22fabb99596"
-  solver-name = "gps-cdcl"
-  solver-version = 1

Gopkg.toml

@@ -1,43 +0,0 @@
-# Gopkg.toml example
-#
-# Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
-# for detailed Gopkg.toml documentation.
-#
-# required = ["github.com/user/thing/cmd/thing"]
-# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
-#
-# [[constraint]]
-#   name = "github.com/user/project"
-#   version = "1.0.0"
-#
-# [[constraint]]
-#   name = "github.com/user/project2"
-#   branch = "dev"
-#   source = "github.com/myfork/project2"
-#
-# [[override]]
-#   name = "github.com/x/y"
-#   version = "2.4.0"
-#
-# [prune]
-#   non-go = false
-#   go-tests = true
-#   unused-packages = true
-
-required = [ "github.com/99designs/gqlgen" ]
-
-[[constraint]]
-  branch = "master"
-  name = "github.com/globalsign/mgo"
-
-[[constraint]]
-  name = "github.com/minio/minio-go"
-  version = "6.0.0"
-  
-[prune]
-  go-tests = true
-  unused-packages = true
-
-[[constraint]]
-  name = "github.com/stretchr/testify"
-  version = "1.2.2"

cmd/rpdata-as2storyimport/main.go

@@ -104,7 +104,7 @@ func main() {
 			}
 		}
 
-		chapter, err := chapters.Add(story, title, result.Author[5:], result.Source, publishDate, &fictionalDate)
+		chapter, err := chapters.Add(story, title, result.Author[5:], result.Source, publishDate, &fictionalDate, models.ChapterCommentModeDisabled)
 		if err != nil {
 			log.Fatalln(err)
 		}

cmd/rpdata-server/main.go

@@ -8,16 +8,16 @@ import (
 	"runtime/debug"
 	"strings"
 
-	"git.aiterp.net/rpdata/api/models"
-	"git.aiterp.net/rpdata/api/models/changes"
-
-	"git.aiterp.net/rpdata/api/models/logs"
-
 	"git.aiterp.net/rpdata/api/graph2"
 	"git.aiterp.net/rpdata/api/internal/auth"
+	"git.aiterp.net/rpdata/api/internal/instrumentation"
 	"git.aiterp.net/rpdata/api/internal/loader"
 	"git.aiterp.net/rpdata/api/internal/store"
+	"git.aiterp.net/rpdata/api/models"
+	"git.aiterp.net/rpdata/api/models/changes"
+	"git.aiterp.net/rpdata/api/models/logs"
 	"github.com/99designs/gqlgen/handler"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
 )
 
 func main() {
@@ -26,9 +26,13 @@ func main() {
 		log.Fatalln("Failed to init store:", err)
 	}
 
+	instrumentation.Register()
+
 	http.Handle("/", handler.Playground("RPData API", "/graphql"))
 	http.Handle("/graphql", queryHandler())
 
+	http.Handle("/metrics", promhttp.Handler())
+
 	go func() {
 		err := logs.RunFullUpdate()
 		if err != nil {
@@ -64,6 +68,8 @@ func logListedChanges() {
 				log.Printf("\tTag: (%s,%s)", object.Kind, object.Name)
 			case models.Chapter:
 				log.Printf("\tChapter: %s", object.ID)
+			case models.Comment:
+				log.Printf("\tComment: %s", object.ID)
 			}
 		}
 	}
@@ -80,6 +86,9 @@ func queryHandler() http.HandlerFunc {
 
 			return fmt.Errorf("The server failed to serve your request due to an internal error, it has been logged")
 		}),
+		handler.ComplexityLimit(300),
+		handler.RequestMiddleware(instrumentation.RequestMiddleware()),
+		handler.ResolverMiddleware(instrumentation.ResolverMiddleware()),
 	)
 
 	return func(w http.ResponseWriter, r *http.Request) {

go.mod

@@ -0,0 +1,42 @@
+module git.aiterp.net/rpdata/api
+
+go 1.12
+
+require (
+	github.com/99designs/gqlgen v0.9.0
+	github.com/agnivade/levenshtein v1.0.1
+	github.com/beorn7/perks v1.0.0 // indirect
+	github.com/davecgh/go-spew v1.1.1
+	github.com/dgrijalva/jwt-go v3.2.0+incompatible
+	github.com/dustin/go-humanize v0.0.0-20171111073723-bb3d318650d4
+	github.com/globalsign/mgo v0.0.0-20180403085842-f76e4f9da92e
+	github.com/go-ini/ini v1.35.0
+	github.com/go-sql-driver/mysql v1.4.0
+	github.com/golang/protobuf v1.3.1 // indirect
+	github.com/gorilla/websocket v1.4.0
+	github.com/graph-gophers/dataloader v0.0.0-20180104184831-78139374585c
+	github.com/hashicorp/golang-lru v0.5.0
+	github.com/jmoiron/sqlx v0.0.0-20180614180643-0dae4fefe7c0
+	github.com/minio/minio-go v0.0.0-20180409193742-3d2d02921f05
+	github.com/mitchellh/go-homedir v0.0.0-20161203194507-b8bc1bf76747
+	github.com/opentracing/opentracing-go v1.0.2
+	github.com/pkg/errors v0.8.1
+	github.com/pmezard/go-difflib v1.0.0
+	github.com/prometheus/client_golang v0.9.1
+	github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90 // indirect
+	github.com/prometheus/common v0.4.0 // indirect
+	github.com/prometheus/procfs v0.0.0-20190517135640-51af30a78b0e // indirect
+	github.com/sirupsen/logrus v1.2.0
+	github.com/stretchr/testify v1.3.0
+	github.com/urfave/cli v1.20.0
+	github.com/vektah/gqlparser v1.1.2
+	golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2
+	golang.org/x/net v0.0.0-20190514140710-3ec191127204
+	golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a
+	golang.org/x/text v0.3.0
+	golang.org/x/tools v0.0.0-20190515012406-7d7faa4812bd
+	google.golang.org/appengine v1.1.0
+	gopkg.in/yaml.v2 v2.2.2
+)
+
+replace golang.org/x/net => golang.org/x/net v0.0.0-20180416171110-a35a21de978d

go.sum

@@ -0,0 +1,155 @@
+github.com/99designs/gqlgen v0.5.1 h1:cRsbpZgX83PrXb0/hj5EkNdmaVN4l/Eii81Z8LCexgY=
+github.com/99designs/gqlgen v0.5.1/go.mod h1:KSQDfLlTTGmzlRgLGm6HeKKKo598l5E2svEM6Nz2Jnw=
+github.com/99designs/gqlgen v0.8.0 h1:ZBteuSgeeFwn+mztjDqQZQdVa9pqslmPnDeCovcnc0Y=
+github.com/99designs/gqlgen v0.8.0/go.mod h1:st7qHA6ssU3uRZkmv+wzrzgX4srvIqEIdE5iuRW8GhE=
+github.com/99designs/gqlgen v0.8.3 h1:I6bMglXNKkn4KlvkSMzqZw53e1N2FF9Gud4NmsOxqiA=
+github.com/99designs/gqlgen v0.8.3/go.mod h1:aLyJw9xUgdJxZ8EqNQxo2pGFhXXJ/hq8t7J4yn8TgI4=
+github.com/99designs/gqlgen v0.9.0 h1:g1arBPML74Vqv0L3Q+TqIhGXLspV+2MYtRLkBxuZrlE=
+github.com/99designs/gqlgen v0.9.0/go.mod h1:HrrG7ic9EgLPsULxsZh/Ti+p0HNWgR3XRuvnD0pb5KY=
+github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
+github.com/agnivade/levenshtein v1.0.0 h1:q+77q31bLT5jhN3BHKA1276nUEdbz7XjDa0o5dRKcZ0=
+github.com/agnivade/levenshtein v1.0.0/go.mod h1:CURSv5d9Uaml+FovSIICkLbAUZ9S4RqaHDIsdSBg7lM=
+github.com/agnivade/levenshtein v1.0.1 h1:3oJU7J3FGFmyhn8KHjmVaZCN5hxTr7GxgRue+sxIXdQ=
+github.com/agnivade/levenshtein v1.0.1/go.mod h1:CURSv5d9Uaml+FovSIICkLbAUZ9S4RqaHDIsdSBg7lM=
+github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
+github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
+github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883/go.mod h1:rCTlJbsFo29Kk6CurOXKm700vrz8f0KW0JNfpkRJY/8=
+github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
+github.com/beorn7/perks v1.0.0 h1:HWo1m869IqiPhD389kmkxeTalrjNbbJTC8LXupb+sl0=
+github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
+github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dgrijalva/jwt-go v3.2.0+incompatible h1:7qlOGliEKZXTDg6OTjfoBKDXWrumCAMpl/TFQ4/5kLM=
+github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
+github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8PWV+bWy6jNmig1y/TA+kYO4g3RSRF0IAv0no=
+github.com/dustin/go-humanize v0.0.0-20171111073723-bb3d318650d4/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
+github.com/globalsign/mgo v0.0.0-20180403085842-f76e4f9da92e h1:hmrbHva/wKD6X4M7pgHVbg/KfVV1wwgr1NEkQaVD3rU=
+github.com/globalsign/mgo v0.0.0-20180403085842-f76e4f9da92e/go.mod h1:xkRDCp4j0OGD1HRkm4kmhM+pmpv3AKq5SU7GMg4oO/Q=
+github.com/go-chi/chi v3.3.2+incompatible/go.mod h1:eB3wogJHnLi3x/kFX2A+IbTBlXxmMeXJVKy9tTv1XzQ=
+github.com/go-ini/ini v1.35.0 h1:D/my3+xOfqZMkJpciRcyqU7XMBUgiZa9qXjZIa8uv2k=
+github.com/go-ini/ini v1.35.0/go.mod h1:ByCAeIL28uOIIG0E3PJtZPDL8WnHpFKFOtgjp+3Ies8=
+github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
+github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
+github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
+github.com/go-sql-driver/mysql v1.4.0 h1:7LxgVwFb2hIQtMm87NdgAVfXjnt4OePseqT1tKx+opk=
+github.com/go-sql-driver/mysql v1.4.0/go.mod h1:zAC/RDZ24gD3HViQzih4MyKcchzm+sOG5ZlKdlhCg5w=
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+github.com/gogo/protobuf v1.0.0/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
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graph2/combine.sh

@@ -1,4 +0,0 @@
-#!/bin/sh
-
-echo "# Generated by stiching together the files under schema/ – DO NOT EDIT" >generated.gql
-cat schema/root.gql schema/**/*.gql >>generated.gql

graph2/complexity.go

@@ -0,0 +1,182 @@
+package graph2
+
+import (
+	input "git.aiterp.net/rpdata/api/graph2/input"
+	changes "git.aiterp.net/rpdata/api/models/changes"
+	channels "git.aiterp.net/rpdata/api/models/channels"
+	characters "git.aiterp.net/rpdata/api/models/characters"
+	files "git.aiterp.net/rpdata/api/models/files"
+	logs "git.aiterp.net/rpdata/api/models/logs"
+	posts "git.aiterp.net/rpdata/api/models/posts"
+	stories "git.aiterp.net/rpdata/api/models/stories"
+)
+
+func complexity() (cr ComplexityRoot) {
+	subListComplexity := 25
+	bigSublistComplexity := 75
+	hugeSublistComplexity := 100
+	findComplexity := 100
+	listComplexity := 200
+	mutationComplexity := 100
+
+	cr.Query.Character = func(childComplexity int, id *string, nick *string) int {
+		return childComplexity + findComplexity
+	}
+	cr.Query.Characters = func(childComplexity int, filter *characters.Filter) int {
+		return childComplexity + listComplexity
+	}
+	cr.Query.Channel = func(childComplexity int, name string) int {
+		return childComplexity + findComplexity
+	}
+	cr.Query.Channels = func(childComplexity int, filter *channels.Filter) int {
+		return childComplexity + listComplexity
+	}
+	cr.Query.Post = func(childComplexity int, id string) int {
+		return childComplexity + findComplexity
+	}
+	cr.Query.Posts = func(childComplexity int, filter *posts.Filter) int {
+		return childComplexity + listComplexity
+	}
+	cr.Query.UnknownNicks = func(childComplexity int, filter *input.UnknownNicksFilter) int {
+		return childComplexity + listComplexity
+	}
+	cr.Query.Log = func(childComplexity int, id string) int {
+		return childComplexity + findComplexity
+	}
+	cr.Query.Logs = func(childComplexity int, filter *logs.Filter) int {
+		if filter != nil && filter.Open != nil && *filter.Open == true {
+			return childComplexity + findComplexity
+		}
+
+		return childComplexity + listComplexity
+	}
+	cr.Query.Chapter = func(childComplexity int, id string) int {
+		return childComplexity + findComplexity
+	}
+	cr.Query.Comment = func(childComplexity int, id string) int {
+		return childComplexity + findComplexity
+	}
+	cr.Query.Tags = func(childComplexity int) int {
+		return childComplexity + listComplexity
+	}
+	cr.Query.Story = func(childComplexity int, id string) int {
+		return childComplexity + findComplexity
+	}
+	cr.Query.Stories = func(childComplexity int, filter *stories.Filter) int {
+		return childComplexity + listComplexity
+	}
+	cr.Query.File = func(childComplexity int, id string) int {
+		return childComplexity + findComplexity
+	}
+	cr.Query.Files = func(childComplexity int, filter *files.Filter) int {
+		return childComplexity + listComplexity
+	}
+	cr.Query.Changes = func(childComplexity int, filter *changes.Filter) int {
+		return childComplexity + listComplexity
+	}
+	cr.Query.Token = func(childComplexity int) int {
+		return childComplexity + findComplexity
+	}
+
+	cr.Mutation.AddStory = func(childComplexity int, input input.StoryAddInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.AddStoryTag = func(childComplexity int, input input.StoryTagAddInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.RemoveStoryTag = func(childComplexity int, input input.StoryTagRemoveInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.EditStory = func(childComplexity int, input input.StoryEditInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.RemoveStory = func(childComplexity int, input input.StoryRemoveInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.AddChapter = func(childComplexity int, input input.ChapterAddInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.EditChapter = func(childComplexity int, input input.ChapterEditInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.MoveChapter = func(childComplexity int, input input.ChapterMoveInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.RemoveChapter = func(childComplexity int, input input.ChapterRemoveInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.AddComment = func(childComplexity int, input input.CommentAddInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.EditComment = func(childComplexity int, input input.CommentEditInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.RemoveComment = func(childComplexity int, input input.CommentRemoveInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.AddLog = func(childComplexity int, input input.LogAddInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.ImportLog = func(childComplexity int, input input.LogImportInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.EditLog = func(childComplexity int, input input.LogEditInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.RemoveLog = func(childComplexity int, input input.LogRemoveInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.AddPost = func(childComplexity int, input input.PostAddInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.EditPost = func(childComplexity int, input input.PostEditInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.MovePost = func(childComplexity int, input input.PostMoveInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.RemovePost = func(childComplexity int, input input.PostRemoveInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.AddCharacter = func(childComplexity int, input input.CharacterAddInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.AddCharacterNick = func(childComplexity int, input input.CharacterNickInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.RemoveCharacterNick = func(childComplexity int, input input.CharacterNickInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.EditCharacter = func(childComplexity int, input input.CharacterEditInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.RemoveCharacter = func(childComplexity int, input input.CharacterRemoveInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.AddChannel = func(childComplexity int, input input.ChannelAddInput) int {
+		return childComplexity + mutationComplexity
+	}
+	cr.Mutation.EditChannel = func(childComplexity int, input input.ChannelEditInput) int {
+		return childComplexity + mutationComplexity
+	}
+
+	cr.Log.Characters = func(childComplexity int) int {
+		return childComplexity + subListComplexity
+	}
+	cr.Log.Posts = func(childComplexity int, kinds []string) int {
+		return childComplexity + hugeSublistComplexity
+	}
+
+	cr.Story.Chapters = func(childComplexity int) int {
+		return childComplexity + bigSublistComplexity
+	}
+	cr.Story.Tags = func(childComplexity int) int {
+		return childComplexity + subListComplexity
+	}
+
+	cr.Chapter.Comments = func(childComplexity int, limit *int) int {
+		return childComplexity + subListComplexity
+	}
+
+	return
+}

graph2/gqlgen.yml

@@ -1,4 +1,6 @@
-schema: generated.gql
+schema: 
+  - schema/root.gql
+  - schema/types/*.gql
 
 exec:
   filename: generated.go
@@ -35,6 +37,13 @@ models:
     model: git.aiterp.net/rpdata/api/models/logs.Filter
   LogImporter:
     model: git.aiterp.net/rpdata/api/models.LogImporter
+  Comment:
+    model: git.aiterp.net/rpdata/api/models.Comment
+    fields:
+      fictionalDate:
+        resolver: true
+  ChapterCommentMode:
+    model: git.aiterp.net/rpdata/api/models.ChapterCommentMode
   Chapter:
     model: git.aiterp.net/rpdata/api/models.Chapter
     fields:

graph2/graph.go

@@ -6,13 +6,13 @@ import (
 	graphql "github.com/99designs/gqlgen/graphql"
 )
 
-//go:generate ./combine.sh
+//go:generate go run github.com/99designs/gqlgen -v
-//go:generate gorunpkg github.com/99designs/gqlgen -v
 
 // New creates a new GraphQL schema.
 func New() graphql.ExecutableSchema {
 	return NewExecutableSchema(Config{
-		Resolvers: &rootResolver{},
+		Resolvers:  &rootResolver{},
+		Complexity: complexity(),
 	})
 }
 
@@ -34,6 +34,10 @@ func (r *rootResolver) Log() LogResolver {
 	return &types.LogResolver
 }
 
+func (r *rootResolver) Comment() CommentResolver {
+	return &types.CommentResolver
+}
+
 func (r *rootResolver) Chapter() ChapterResolver {
 	return &types.ChapterResolver
 }
@@ -42,10 +46,6 @@ func (r *rootResolver) Story() StoryResolver {
 	return &types.StoryResolver
 }
 
-func (r *rootResolver) File() FileResolver {
-	return &types.FileResolver
-}
-
 func (r *rootResolver) Change() ChangeResolver {
 	return &types.ChangeResolver
 }

graph2/queries/changes.go

@@ -10,16 +10,31 @@ import (
 
 /// Queries
 
-func (r *resolver) Changes(ctx context.Context, filter *changes.Filter) ([]models.Change, error) {
+func (r *resolver) Changes(ctx context.Context, filter *changes.Filter) ([]*models.Change, error) {
-	return changes.List(filter)
+	changes, err := changes.List(filter)
+	if err != nil {
+		return nil, err
+	}
+
+	changes2 := make([]*models.Change, len(changes))
+	for i := range changes {
+		changes2[i] = &changes[i]
+	}
+
+	return changes2, nil
 }
 
 /// Subscriptions
 
-func (r *subscriptionResolver) Changes(ctx context.Context, keys []models.ChangeKey) (<-chan models.Change, error) {
+func (r *subscriptionResolver) Changes(ctx context.Context, keys []*models.ChangeKey) (<-chan *models.Change, error) {
 	if len(keys) == 0 {
 		return nil, errors.New("At least one key is required for a subscription")
 	}
 
-	return changes.Subscribe(ctx, keys, false), nil
+	keys2 := make([]models.ChangeKey, len(keys))
+	for i := range keys {
+		keys2[i] = *keys[i]
+	}
+
+	return changes.Subscribe(ctx, keys2, false), nil
 }

graph2/queries/channel.go

@@ -14,20 +14,35 @@ import (
 
 // Queries
 
-func (r *resolver) Channel(ctx context.Context, name string) (models.Channel, error) {
+func (r *resolver) Channel(ctx context.Context, name string) (*models.Channel, error) {
-	return channels.FindName(name)
+	channel, err := channels.FindName(name)
+	if err != nil {
+		return nil, err
+	}
+
+	return &channel, nil
 }
 
-func (r *resolver) Channels(ctx context.Context, filter *channels.Filter) ([]models.Channel, error) {
+func (r *resolver) Channels(ctx context.Context, filter *channels.Filter) ([]*models.Channel, error) {
-	return channels.List(filter)
+	channels, err := channels.List(filter)
+	if err != nil {
+		return nil, err
+	}
+
+	channels2 := make([]*models.Channel, len(channels))
+	for i := range channels {
+		channels2[i] = &channels[i]
+	}
+
+	return channels2, nil
 }
 
 // Mutations
 
-func (r *mutationResolver) AddChannel(ctx context.Context, input input.ChannelAddInput) (models.Channel, error) {
+func (r *mutationResolver) AddChannel(ctx context.Context, input input.ChannelAddInput) (*models.Channel, error) {
 	token := auth.TokenFromContext(ctx)
 	if !token.Authenticated() || !token.Permitted("channel.add") {
-		return models.Channel{}, errors.New("You are not permitted to add channels")
+		return nil, errors.New("You are not permitted to add channels")
 	}
 
 	logged := false
@@ -49,31 +64,31 @@ func (r *mutationResolver) AddChannel(ctx context.Context, input input.ChannelAd
 
 	channel, err := channels.Add(input.Name, logged, hub, eventName, locationName)
 	if err != nil {
-		return models.Channel{}, errors.New("Failed to add channel: " + err.Error())
+		return nil, errors.New("Failed to add channel: " + err.Error())
 	}
 
 	go changes.Submit("Channel", "add", token.UserID, true, changekeys.Listed(channel), channel)
 
-	return channel, nil
+	return &channel, nil
 }
 
-func (r *mutationResolver) EditChannel(ctx context.Context, input input.ChannelEditInput) (models.Channel, error) {
+func (r *mutationResolver) EditChannel(ctx context.Context, input input.ChannelEditInput) (*models.Channel, error) {
 	token := auth.TokenFromContext(ctx)
 	if !token.Authenticated() || !token.Permitted("channel.edit") {
-		return models.Channel{}, errors.New("You are not permitted to edit channels")
+		return nil, errors.New("You are not permitted to edit channels")
 	}
 
 	channel, err := channels.FindName(input.Name)
 	if err != nil {
-		return models.Channel{}, errors.New("Channel not found")
+		return nil, errors.New("Channel not found")
 	}
 
 	channel, err = channels.Edit(channel, input.Logged, input.Hub, input.EventName, input.LocationName)
 	if err != nil {
-		return models.Channel{}, errors.New("Failed to edit channel: " + err.Error())
+		return nil, errors.New("Failed to edit channel: " + err.Error())
 	}
 
 	go changes.Submit("Channel", "edit", token.UserID, true, changekeys.Listed(channel), channel)
 
-	return channel, nil
+	return &channel, nil
 }

graph2/queries/chapter.go

@@ -5,83 +5,92 @@ import (
 	"errors"
 	"time"
 
+	"git.aiterp.net/rpdata/api/graph2/input"
+	"git.aiterp.net/rpdata/api/internal/auth"
+	"git.aiterp.net/rpdata/api/models"
 	"git.aiterp.net/rpdata/api/models/changekeys"
 	"git.aiterp.net/rpdata/api/models/changes"
-
-	"git.aiterp.net/rpdata/api/internal/auth"
-	"git.aiterp.net/rpdata/api/models/stories"
-
-	"git.aiterp.net/rpdata/api/graph2/input"
-	"git.aiterp.net/rpdata/api/models"
 	"git.aiterp.net/rpdata/api/models/chapters"
+	"git.aiterp.net/rpdata/api/models/comments"
+	"git.aiterp.net/rpdata/api/models/stories"
 )
 
 // Queries
 
-func (r *resolver) Chapter(ctx context.Context, id string) (models.Chapter, error) {
+func (r *resolver) Chapter(ctx context.Context, id string) (*models.Chapter, error) {
-	return chapters.FindID(id)
+	chapter, err := chapters.FindID(id)
+	if err != nil {
+		return nil, err
+	}
+
+	return &chapter, nil
 }
 
 // Mutations
 
-func (r *mutationResolver) AddChapter(ctx context.Context, input input.ChapterAddInput) (models.Chapter, error) {
+func (r *mutationResolver) AddChapter(ctx context.Context, input input.ChapterAddInput) (*models.Chapter, error) {
 	story, err := stories.FindID(input.StoryID)
 	if err != nil {
-		return models.Chapter{}, errors.New("Story not found")
+		return nil, errors.New("Story not found")
 	}
 
 	token := auth.TokenFromContext(ctx)
 	if !token.Permitted("member", "story.add") {
-		return models.Chapter{}, errors.New("Unauthorized")
+		return nil, errors.New("Unauthorized")
 	}
 
 	author := token.UserID
 	if input.Author != nil && *input.Author != author {
 		if !token.Permitted("story.add") {
-			return models.Chapter{}, errors.New("False pretender")
+			return nil, errors.New("False pretender")
 		}
 
 		author = *input.Author
 	}
 
 	if !story.Open && story.Author != author {
-		return models.Chapter{}, errors.New("Story is not open")
+		return nil, errors.New("Story is not open")
 	}
 
-	chapter, err := chapters.Add(story, input.Title, author, input.Source, time.Now(), input.FictionalDate)
+	commentMode := models.ChapterCommentModeDisabled
+	if input.CommentMode != nil {
+		commentMode = *input.CommentMode
+	}
+
+	chapter, err := chapters.Add(story, input.Title, author, input.Source, time.Now(), input.FictionalDate, commentMode)
 	if err != nil {
-		return models.Chapter{}, errors.New("Failed to create chapter: " + err.Error())
+		return nil, errors.New("Failed to create chapter: " + err.Error())
 	}
 
 	go changes.Submit("Chapter", "add", token.UserID, story.Listed, changekeys.Listed(story, chapter), story, chapter)
 
-	return chapter, nil
+	return &chapter, nil
 }
 
-func (r *mutationResolver) MoveChapter(ctx context.Context, input input.ChapterMoveInput) (models.Chapter, error) {
+func (r *mutationResolver) MoveChapter(ctx context.Context, input input.ChapterMoveInput) (*models.Chapter, error) {
 	chapter, err := chapters.FindID(input.ID)
 	if err != nil {
-		return models.Chapter{}, errors.New("Chapter not found")
+		return nil, errors.New("Chapter not found")
 	}
 
 	token := auth.TokenFromContext(ctx)
 	if !token.Authenticated() || !token.PermittedUser(chapter.Author, "member", "chapter.move") {
-		return models.Chapter{}, errors.New("You are not allowed to move this chapter")
+		return nil, errors.New("You are not allowed to move this chapter")
 	}
 
 	target, err := stories.FindID(input.StoryID)
 	if err != nil {
-		return models.Chapter{}, errors.New("Target story not found")
+		return nil, errors.New("Target story not found")
 	}
 
 	if !target.Open && !token.PermittedUser(target.Author, "member", "chapter.move") {
-		return models.Chapter{}, errors.New("You are not permitted to move chapters to this story")
+		return nil, errors.New("You are not permitted to move chapters to this story")
 	}
 
 	oldStoryID := chapter.StoryID
 	chapter, err = chapters.Move(chapter, target)
 	if err != nil {
-		return models.Chapter{}, errors.New("Failed to move chapter: " + err.Error())
+		return nil, errors.New("Failed to move chapter: " + err.Error())
 	}
 
 	go func() {
@@ -99,27 +108,27 @@ func (r *mutationResolver) MoveChapter(ctx context.Context, input input.ChapterM
 		changes.Submit("Chapter", "move-in", token.UserID, story.Listed, changekeys.Listed(story, chapter), story, chapter)
 	}()
 
-	return chapter, nil
+	return &chapter, nil
 }
 
-func (r *mutationResolver) EditChapter(ctx context.Context, input input.ChapterEditInput) (models.Chapter, error) {
+func (r *mutationResolver) EditChapter(ctx context.Context, input input.ChapterEditInput) (*models.Chapter, error) {
 	chapter, err := chapters.FindID(input.ID)
 	if err != nil {
-		return models.Chapter{}, errors.New("Chapter not found")
+		return nil, errors.New("Chapter not found")
 	}
 
 	token := auth.TokenFromContext(ctx)
 	if !token.Authenticated() || !token.PermittedUser(chapter.Author, "member", "chapter.edit") {
-		return models.Chapter{}, errors.New("Unauthorized")
+		return nil, errors.New("Unauthorized")
 	}
 
 	if input.ClearFictionalDate != nil && *input.ClearFictionalDate == true {
 		input.FictionalDate = &time.Time{}
 	}
 
-	chapter, err = chapters.Edit(chapter, input.Title, input.Source, input.FictionalDate)
+	chapter, err = chapters.Edit(chapter, input.Title, input.Source, input.FictionalDate, input.CommentMode, input.CommentsLocked)
 	if err != nil {
-		return models.Chapter{}, errors.New("Failed to edit chapter: " + err.Error())
+		return nil, errors.New("Failed to edit chapter: " + err.Error())
 	}
 
 	go func() {
@@ -131,23 +140,28 @@ func (r *mutationResolver) EditChapter(ctx context.Context, input input.ChapterE
 		changes.Submit("Chapter", "edit", token.UserID, story.Listed, changekeys.Many(story, chapter), chapter)
 	}()
 
-	return chapter, nil
+	return &chapter, nil
 }
 
-func (r *mutationResolver) RemoveChapter(ctx context.Context, input input.ChapterRemoveInput) (models.Chapter, error) {
+func (r *mutationResolver) RemoveChapter(ctx context.Context, input input.ChapterRemoveInput) (*models.Chapter, error) {
 	chapter, err := chapters.FindID(input.ID)
 	if err != nil {
-		return models.Chapter{}, errors.New("Chapter not found")
+		return nil, errors.New("Chapter not found")
 	}
 
 	token := auth.TokenFromContext(ctx)
 	if !token.Authenticated() || !token.PermittedUser(chapter.Author, "member", "chapter.remove") {
-		return models.Chapter{}, errors.New("Unauthorized")
+		return nil, errors.New("Unauthorized")
 	}
 
 	chapter, err = chapters.Remove(chapter)
 	if err != nil {
-		return models.Chapter{}, errors.New("Failed to remove chapter: " + err.Error())
+		return nil, errors.New("Failed to remove chapter: " + err.Error())
+	}
+
+	err = comments.RemoveChapter(chapter)
+	if err != nil {
+		return nil, errors.New("Chapter was removed, but comment removal failed: " + err.Error())
 	}
 
 	go func() {
@@ -159,5 +173,5 @@ func (r *mutationResolver) RemoveChapter(ctx context.Context, input input.Chapte
 		changes.Submit("Chapter", "remove", token.UserID, story.Listed, changekeys.Many(story, chapter), chapter)
 	}()
 
-	return chapter, nil
+	return &chapter, nil
 }

graph2/queries/character.go

@@ -16,29 +16,49 @@ import (
 
 // Queries
 
-func (r *resolver) Character(ctx context.Context, id *string, nick *string) (models.Character, error) {
+func (r *resolver) Character(ctx context.Context, id *string, nick *string) (*models.Character, error) {
 	if id != nil {
-		return characters.FindID(*id)
+		character, err := characters.FindID(*id)
+		if err != nil {
+			return nil, err
+		}
+
+		return &character, nil
 	} else if nick != nil {
-		return characters.FindNick(*nick)
+		character, err := characters.FindNick(*nick)
+		if err != nil {
+			return nil, err
+		}
+
+		return &character, nil
 	} else {
-		return models.Character{}, errors.New("You must specify either an ID or a nick")
+		return nil, errors.New("You must specify either an ID or a nick")
 	}
 }
 
-func (r *resolver) Characters(ctx context.Context, filter *characters.Filter) ([]models.Character, error) {
+func (r *resolver) Characters(ctx context.Context, filter *characters.Filter) ([]*models.Character, error) {
-	return characters.List(filter)
+	characters, err := characters.List(filter)
+	if err != nil {
+		return nil, err
+	}
+
+	characters2 := make([]*models.Character, len(characters))
+	for i := range characters {
+		characters2[i] = &characters[i]
+	}
+
+	return characters2, nil
 }
 
 // Mutations
 
-func (r *mutationResolver) AddCharacter(ctx context.Context, input input.CharacterAddInput) (models.Character, error) {
+func (r *mutationResolver) AddCharacter(ctx context.Context, input input.CharacterAddInput) (*models.Character, error) {
 	token := auth.TokenFromContext(ctx)
 	if !token.Permitted("member", "character.add") {
-		return models.Character{}, errors.New("You are not permitted to add characters")
+		return nil, errors.New("You are not permitted to add characters")
 	}
 	if len(input.Name) < 2 || len(input.Nick) < 2 {
-		return models.Character{}, errors.New("You need to provide a name and a nick (min length: 2)")
+		return nil, errors.New("You need to provide a name and a nick (min length: 2)")
 	}
 
 	shortName := ""
@@ -56,7 +76,7 @@ func (r *mutationResolver) AddCharacter(ctx context.Context, input input.Charact
 	author := token.UserID
 	if input.Author != nil && *input.Author != author {
 		if !token.Permitted("character.add") {
-			return models.Character{}, errors.New("You are only permitted to add your own characters")
+			return nil, errors.New("You are only permitted to add your own characters")
 		}
 
 		author = *input.Author
@@ -66,109 +86,109 @@ func (r *mutationResolver) AddCharacter(ctx context.Context, input input.Charact
 
 	character, err := characters.Add(input.Nick, input.Name, shortName, author, description)
 	if err != nil {
-		return models.Character{}, errors.New("Adding character failed: " + err.Error())
+		return nil, errors.New("Adding character failed: " + err.Error())
 	}
 
 	go changes.Submit("Character", "add", token.UserID, true, changekeys.Listed(character), character)
 
-	return character, nil
+	return &character, nil
 }
 
-func (r *mutationResolver) AddCharacterNick(ctx context.Context, input input.CharacterNickInput) (models.Character, error) {
+func (r *mutationResolver) AddCharacterNick(ctx context.Context, input input.CharacterNickInput) (*models.Character, error) {
 	character, err := characters.FindID(input.ID)
 	if err != nil {
-		return models.Character{}, errors.New("Character not found")
+		return nil, errors.New("Character not found")
 	}
 
 	if len(input.Nick) < 2 {
-		return models.Character{}, errors.New("You need to provide a valid nick (min length: 2)")
+		return nil, errors.New("You need to provide a valid nick (min length: 2)")
 	}
 
 	token := auth.TokenFromContext(ctx)
 	if !token.PermittedUser(character.Author, "member", "character.edit") {
-		return models.Character{}, errors.New("You are not permitted to edit this character")
+		return nil, errors.New("You are not permitted to edit this character")
 	}
 
 	logs.ScheduleFullUpdate()
 
 	character, err = characters.AddNick(character, input.Nick)
 	if err != nil {
-		return models.Character{}, errors.New("Failed to add nick: " + err.Error())
+		return nil, errors.New("Failed to add nick: " + err.Error())
 	}
 
 	go logs.ScheduleFullUpdate()
 	go changes.Submit("Character", "edit", token.UserID, true, changekeys.Listed(character), character)
 
-	return character, nil
+	return &character, nil
 }
 
-func (r *mutationResolver) RemoveCharacterNick(ctx context.Context, input input.CharacterNickInput) (models.Character, error) {
+func (r *mutationResolver) RemoveCharacterNick(ctx context.Context, input input.CharacterNickInput) (*models.Character, error) {
 	character, err := characters.FindID(input.ID)
 	if err != nil {
-		return models.Character{}, errors.New("Character not found")
+		return nil, errors.New("Character not found")
 	}
 
 	token := auth.TokenFromContext(ctx)
 	if !token.PermittedUser(character.Author, "member", "character.edit") {
-		return models.Character{}, errors.New("You are not permitted to edit this character")
+		return nil, errors.New("You are not permitted to edit this character")
 	}
 
 	character, err = characters.RemoveNick(character, input.Nick)
 	if err != nil {
-		return models.Character{}, errors.New("Failed to remove nick: " + err.Error())
+		return nil, errors.New("Failed to remove nick: " + err.Error())
 	}
 
 	go logs.ScheduleFullUpdate()
 	go changes.Submit("Character", "edit", token.UserID, true, changekeys.Listed(character), character)
 
-	return character, nil
+	return &character, nil
 }
 
-func (r *mutationResolver) EditCharacter(ctx context.Context, input input.CharacterEditInput) (models.Character, error) {
+func (r *mutationResolver) EditCharacter(ctx context.Context, input input.CharacterEditInput) (*models.Character, error) {
 	character, err := characters.FindID(input.ID)
 	if err != nil {
-		return models.Character{}, errors.New("Character not found")
+		return nil, errors.New("Character not found")
 	}
 
 	if input.Name != nil && len(*input.Name) < 2 {
-		return models.Character{}, errors.New("You need to provide a valid name (min length: 2)")
+		return nil, errors.New("You need to provide a valid name (min length: 2)")
 	}
 	if input.ShortName != nil && len(*input.ShortName) < 2 {
-		return models.Character{}, errors.New("You need to provide a valid short name (min length: 2)")
+		return nil, errors.New("You need to provide a valid short name (min length: 2)")
 	}
 
 	token := auth.TokenFromContext(ctx)
 	if !token.PermittedUser(character.Author, "member", "character.edit") {
-		return models.Character{}, errors.New("You are not permitted to edit this character")
+		return nil, errors.New("You are not permitted to edit this character")
 	}
 
 	character, err = characters.Edit(character, input.Name, input.ShortName, input.Description)
 	if err != nil {
-		return models.Character{}, errors.New("Failed to edit character: " + err.Error())
+		return nil, errors.New("Failed to edit character: " + err.Error())
 	}
 
 	go changes.Submit("Character", "edit", token.UserID, true, changekeys.Listed(character), character)
 
-	return character, nil
+	return &character, nil
 }
 
-func (r *mutationResolver) RemoveCharacter(ctx context.Context, input input.CharacterRemoveInput) (models.Character, error) {
+func (r *mutationResolver) RemoveCharacter(ctx context.Context, input input.CharacterRemoveInput) (*models.Character, error) {
 	character, err := characters.FindID(input.ID)
 	if err != nil {
-		return models.Character{}, errors.New("Character not found")
+		return nil, errors.New("Character not found")
 	}
 
 	token := auth.TokenFromContext(ctx)
 	if !token.PermittedUser(character.Author, "member", "character.remove") {
-		return models.Character{}, errors.New("You are not permitted to remove this character")
+		return nil, errors.New("You are not permitted to remove this character")
 	}
 
 	character, err = characters.Remove(character)
 	if err != nil {
-		return models.Character{}, errors.New("Failed to remove character: " + err.Error())
+		return nil, errors.New("Failed to remove character: " + err.Error())
 	}
 
 	go changes.Submit("Character", "remove", token.UserID, true, changekeys.Listed(character), character)
 
-	return character, nil
+	return &character, nil
 }

graph2/queries/comment.go

@@ -0,0 +1,180 @@
+package queries
+
+import (
+	"context"
+	"errors"
+	"log"
+	"time"
+
+	"git.aiterp.net/rpdata/api/models/stories"
+
+	"git.aiterp.net/rpdata/api/models/characters"
+
+	"git.aiterp.net/rpdata/api/models/changekeys"
+
+	"git.aiterp.net/rpdata/api/models/changes"
+
+	"git.aiterp.net/rpdata/api/graph2/input"
+	"git.aiterp.net/rpdata/api/internal/auth"
+	"git.aiterp.net/rpdata/api/models/chapters"
+	"git.aiterp.net/rpdata/api/models/comments"
+
+	"git.aiterp.net/rpdata/api/models"
+)
+
+// Queries
+
+func (r *resolver) Comment(ctx context.Context, id string) (*models.Comment, error) {
+	comment, err := comments.Find(id)
+	if err != nil {
+		return nil, err
+	}
+
+	return &comment, nil
+}
+
+// Mutations
+
+func (r *mutationResolver) AddComment(ctx context.Context, input input.CommentAddInput) (*models.Comment, error) {
+	chapter, err := chapters.FindID(input.ChapterID)
+	if err != nil {
+		return nil, errors.New("Chapter not found")
+	}
+
+	token := auth.TokenFromContext(ctx)
+	if !token.Permitted("member", "story.edit") {
+		return nil, errors.New("Unauthorized")
+	}
+
+	if !chapter.CanComment() {
+		return nil, errors.New("Comments are disabled or locked")
+	}
+
+	var characterPtr *models.Character
+	if input.CharacterID != nil {
+		character, err := characters.FindID(*input.CharacterID)
+		if err != nil {
+			return nil, errors.New("Character not found")
+		} else if character.Author != token.UserID {
+			return nil, errors.New("That is not your character")
+		}
+
+		characterPtr = &character
+	}
+
+	fictionalDate := time.Time{}
+	if input.FictionalDate != nil {
+		fictionalDate = *input.FictionalDate
+	}
+
+	subject := ""
+	if input.Subject != nil {
+		subject = *input.Subject
+	}
+
+	comment, err := comments.Add(chapter, subject, token.UserID, input.Source, input.CharacterName, characterPtr, time.Now(), fictionalDate)
+	if err != nil {
+		return nil, errors.New("Failed to add comment: " + err.Error())
+	}
+
+	go func() {
+		story, err := stories.FindID(chapter.StoryID)
+		if err != nil {
+			log.Println("WARNING: Couldn't log comment change:", err)
+			return
+		}
+
+		changes.Submit("Comment", "add", token.UserID, true, changekeys.Many(comment, chapter, models.Story{ID: chapter.StoryID}), comment, chapter, story)
+	}()
+
+	return &comment, nil
+}
+
+func (r *mutationResolver) EditComment(ctx context.Context, input input.CommentEditInput) (*models.Comment, error) {
+	comment, err := comments.Find(input.CommentID)
+	if err != nil {
+		return nil, errors.New("Comment not found")
+	}
+
+	token := auth.TokenFromContext(ctx)
+	if !token.PermittedUser(comment.Author, "member", "story.edit") {
+		return nil, errors.New("You cannot edit this comment")
+	}
+
+	chapter, err := chapters.FindID(comment.ChapterID)
+	if err != nil {
+		return nil, errors.New("Comment's chapter not found")
+	}
+
+	if !chapter.CanComment() {
+		return nil, errors.New("Comments are disabled or locked")
+	}
+
+	if input.ClearFictionalDate != nil && *input.ClearFictionalDate == true {
+		input.FictionalDate = &time.Time{}
+	}
+
+	if input.CharacterID != nil && *input.CharacterID != "" {
+		character, err := characters.FindID(*input.CharacterID)
+		if err != nil {
+			return nil, errors.New("Character not found")
+		} else if character.Author != token.UserID {
+			return nil, errors.New("That is not your character")
+		}
+	}
+
+	comment, err = comments.Edit(comment, input.Source, input.CharacterName, input.CharacterID, input.Subject, input.FictionalDate)
+	if err != nil {
+		return nil, errors.New("Could not post comment: " + err.Error())
+	}
+
+	go func() {
+		story, err := stories.FindID(chapter.StoryID)
+		if err != nil {
+			log.Println("WARNING: Couldn't log comment change:", err)
+			return
+		}
+
+		changes.Submit("Comment", "edit", token.UserID, true, changekeys.Many(comment, chapter, models.Story{ID: chapter.StoryID}), comment, chapter, story)
+	}()
+
+	return &comment, nil
+}
+
+func (r *mutationResolver) RemoveComment(ctx context.Context, input input.CommentRemoveInput) (*models.Comment, error) {
+	comment, err := comments.Find(input.CommentID)
+	if err != nil {
+		return nil, errors.New("Comment not found")
+	}
+
+	token := auth.TokenFromContext(ctx)
+	if !token.PermittedUser(comment.Author, "member", "story.edit") {
+		return nil, errors.New("You cannot remove this comment")
+	}
+
+	chapter, err := chapters.FindID(comment.ChapterID)
+	if err != nil {
+		return nil, errors.New("Comment's chapter not found")
+	}
+
+	if !chapter.CanComment() {
+		return nil, errors.New("Comments are disabled or locked")
+	}
+
+	err = comments.Remove(comment)
+	if err != nil {
+		return nil, errors.New("Failed to remove comment: " + err.Error())
+	}
+
+	go func() {
+		story, err := stories.FindID(chapter.StoryID)
+		if err != nil {
+			log.Println("WARNING: Couldn't log comment change:", err)
+			return
+		}
+
+		changes.Submit("Comment", "remove", token.UserID, true, changekeys.Many(comment, chapter, models.Story{ID: chapter.StoryID}), comment, chapter, story)
+	}()
+
+	return &comment, nil
+}

graph2/queries/file.go

@@ -8,11 +8,16 @@ import (
 	"git.aiterp.net/rpdata/api/models/files"
 )
 
-func (r *resolver) File(ctx context.Context, id string) (models.File, error) {
+func (r *resolver) File(ctx context.Context, id string) (*models.File, error) {
-	return files.FindID(id)
+	file, err := files.FindID(id)
+	if err != nil {
+		return nil, err
+	}
+
+	return &file, nil
 }
 
-func (r *resolver) Files(ctx context.Context, filter *files.Filter) ([]models.File, error) {
+func (r *resolver) Files(ctx context.Context, filter *files.Filter) ([]*models.File, error) {
 	token := auth.TokenFromContext(ctx)
 
 	if filter == nil {
@@ -28,7 +33,17 @@ func (r *resolver) Files(ctx context.Context, filter *files.Filter) ([]models.Fi
 		filter.Public = &trueValue
 	}
 
-	return files.List(filter)
+	files, err := files.List(filter)
+	if err != nil {
+		return nil, err
+	}
+
+	files2 := make([]*models.File, len(files))
+	for i := range files {
+		files2[i] = &files[i]
+	}
+
+	return files2, nil
 }
 
 var trueValue = true

graph2/queries/log.go

@@ -20,11 +20,16 @@ import (
 
 // Queries
 
-func (r *resolver) Log(ctx context.Context, id string) (models.Log, error) {
+func (r *resolver) Log(ctx context.Context, id string) (*models.Log, error) {
-	return logs.FindID(id)
+	log, err := logs.FindID(id)
+	if err != nil {
+		return nil, err
+	}
+
+	return &log, nil
 }
 
-func (r *resolver) Logs(ctx context.Context, filter *logs.Filter) ([]models.Log, error) {
+func (r *resolver) Logs(ctx context.Context, filter *logs.Filter) ([]*models.Log, error) {
 	logs, err := logs.List(filter)
 	if err != nil {
 		return nil, err
@@ -51,15 +56,20 @@ func (r *resolver) Logs(ctx context.Context, filter *logs.Filter) ([]models.Log,
 		}
 	}
 
-	return logs, nil
+	logs2 := make([]*models.Log, len(logs))
+	for i := range logs {
+		logs2[i] = &logs[i]
+	}
+
+	return logs2, nil
 }
 
 // Mutations
 
-func (r *mutationResolver) AddLog(ctx context.Context, input input.LogAddInput) (models.Log, error) {
+func (r *mutationResolver) AddLog(ctx context.Context, input input.LogAddInput) (*models.Log, error) {
 	token := auth.TokenFromContext(ctx)
 	if !token.Authenticated() || !token.Permitted("log.add") {
-		return models.Log{}, errors.New("You are not permitted to add logs")
+		return nil, errors.New("You are not permitted to add logs")
 	}
 
 	open := input.Open != nil && *input.Open == true
@@ -80,7 +90,7 @@ func (r *mutationResolver) AddLog(ctx context.Context, input input.LogAddInput)
 
 	log, err := logs.Add(input.Date, input.Channel, title, event, description, open)
 	if !token.Authenticated() || !token.Permitted("log.add") {
-		return models.Log{}, errors.New("Failed to create log: " + err.Error())
+		return nil, errors.New("Failed to create log: " + err.Error())
 	}
 
 	go func() {
@@ -94,10 +104,10 @@ func (r *mutationResolver) AddLog(ctx context.Context, input input.LogAddInput)
 		changes.Submit("Log", "add", token.UserID, true, changekeys.Listed(log), log)
 	}()
 
-	return log, nil
+	return &log, nil
 }
 
-func (r *mutationResolver) ImportLog(ctx context.Context, input input.LogImportInput) ([]models.Log, error) {
+func (r *mutationResolver) ImportLog(ctx context.Context, input input.LogImportInput) ([]*models.Log, error) {
 	token := auth.TokenFromContext(ctx)
 	if !token.Authenticated() || !token.Permitted("log.add") {
 		return nil, errors.New("You are not permitted to add logs")
@@ -123,7 +133,7 @@ func (r *mutationResolver) ImportLog(ctx context.Context, input input.LogImportI
 		return nil, err
 	}
 
-	newLogs := make([]models.Log, 0, len(results))
+	newLogs := make([]*models.Log, 0, len(results))
 	for _, result := range results {
 		go func(result logs.ImportedLog) {
 			changes.Submit("Log", "add", token.UserID, true, changekeys.Many(result.Log), result.Log)
@@ -135,50 +145,50 @@ func (r *mutationResolver) ImportLog(ctx context.Context, input input.LogImportI
 			log = result.Log
 		}
 
-		newLogs = append(newLogs, log)
+		newLogs = append(newLogs, &log)
 	}
 
 	return newLogs, nil
 }
 
-func (r *mutationResolver) EditLog(ctx context.Context, input input.LogEditInput) (models.Log, error) {
+func (r *mutationResolver) EditLog(ctx context.Context, input input.LogEditInput) (*models.Log, error) {
 	token := auth.TokenFromContext(ctx)
 	if !token.Authenticated() || !token.Permitted("log.edit") {
-		return models.Log{}, errors.New("You are not permitted to edit logs")
+		return nil, errors.New("You are not permitted to edit logs")
 	}
 
 	log, err := logs.FindID(input.ID)
 	if err != nil {
-		return models.Log{}, errors.New("Log not found")
+		return nil, errors.New("Log not found")
 	}
 
 	log, err = logs.Edit(log, input.Title, input.Event, input.Description, input.Open)
 	if err != nil {
-		return models.Log{}, errors.New("Failed to edit log: " + err.Error())
+		return nil, errors.New("Failed to edit log: " + err.Error())
 	}
 
 	go changes.Submit("Log", "edit", token.UserID, true, changekeys.Listed(log), log)
 
-	return log, nil
+	return &log, nil
 }
 
-func (r *mutationResolver) RemoveLog(ctx context.Context, input input.LogRemoveInput) (models.Log, error) {
+func (r *mutationResolver) RemoveLog(ctx context.Context, input input.LogRemoveInput) (*models.Log, error) {
 	token := auth.TokenFromContext(ctx)
 	if !token.Authenticated() || !token.Permitted("log.remove") {
-		return models.Log{}, errors.New("You are not permitted to remove logs")
+		return nil, errors.New("You are not permitted to remove logs")
 	}
 
 	log, err := logs.FindID(input.ID)
 	if err != nil {
-		return models.Log{}, errors.New("Log not found")
+		return nil, errors.New("Log not found")
 	}
 
 	log, err = logs.Remove(log)
 	if err != nil {
-		return models.Log{}, errors.New("Failed to remove log: " + err.Error())
+		return nil, errors.New("Failed to remove log: " + err.Error())
 	}
 
 	go changes.Submit("Log", "remove", token.UserID, true, changekeys.Listed(log), log)
 
-	return log, nil
+	return &log, nil
 }

graph2/queries/post.go

@@ -16,11 +16,16 @@ import (
 
 // Queries
 
-func (r *resolver) Post(ctx context.Context, id string) (models.Post, error) {
+func (r *resolver) Post(ctx context.Context, id string) (*models.Post, error) {
-	return posts.FindID(id)
+	post, err := posts.FindID(id)
+	if err != nil {
+		return nil, err
+	}
+
+	return &post, nil
 }
 
-func (r *resolver) Posts(ctx context.Context, filter *posts.Filter) ([]models.Post, error) {
+func (r *resolver) Posts(ctx context.Context, filter *posts.Filter) ([]*models.Post, error) {
 	// Some sanity checks to avoid querying an insame amount of posts.
 	if filter == nil {
 		filter = &posts.Filter{Limit: 256}
@@ -38,42 +43,52 @@ func (r *resolver) Posts(ctx context.Context, filter *posts.Filter) ([]models.Po
 		}
 	}
 
-	return posts.List(filter)
+	posts, err := posts.List(filter)
+	if err != nil {
+		return nil, err
+	}
+
+	posts2 := make([]*models.Post, len(posts))
+	for i := range posts {
+		posts2[i] = &posts[i]
+	}
+
+	return posts2, nil
 }
 
 // Mutation
 
-func (r *mutationResolver) AddPost(ctx context.Context, input input.PostAddInput) (models.Post, error) {
+func (r *mutationResolver) AddPost(ctx context.Context, input input.PostAddInput) (*models.Post, error) {
 	token := auth.TokenFromContext(ctx)
 	if !token.Authenticated() || !token.Permitted("post.add") {
-		return models.Post{}, errors.New("You are not permitted to edit logs")
+		return nil, errors.New("You are not permitted to edit logs")
 	}
 
 	log, err := logs.FindID(input.LogID)
 	if err != nil {
-		return models.Post{}, err
+		return nil, err
 	}
 
 	post, err := posts.Add(log, input.Time, input.Kind, input.Nick, input.Text)
 	if err != nil {
-		return models.Post{}, err
+		return nil, err
 	}
 
 	go logs.UpdateCharacters(log, nil)
 	go changes.Submit("Post", "add", token.UserID, true, changekeys.Many(log, post), post)
 
-	return post, nil
+	return &post, nil
 }
 
-func (r *mutationResolver) EditPost(ctx context.Context, input input.PostEditInput) (models.Post, error) {
+func (r *mutationResolver) EditPost(ctx context.Context, input input.PostEditInput) (*models.Post, error) {
 	token := auth.TokenFromContext(ctx)
 	if !token.Authenticated() || !token.Permitted("post.edit") {
-		return models.Post{}, errors.New("You are not permitted to edit logs")
+		return nil, errors.New("You are not permitted to edit logs")
 	}
 
 	post, err := posts.FindID(input.ID)
 	if err != nil {
-		return models.Post{}, errors.New("Post not found")
+		return nil, errors.New("Post not found")
 	}
 
 	if input.Nick != nil {
@@ -89,7 +104,7 @@ func (r *mutationResolver) EditPost(ctx context.Context, input input.PostEditInp
 
 	post, err = posts.Edit(post, input.Time, input.Kind, input.Nick, input.Text)
 	if err != nil {
-		return models.Post{}, errors.New("Adding post failed: " + err.Error())
+		return nil, errors.New("Adding post failed: " + err.Error())
 	}
 
 	go func() {
@@ -101,10 +116,10 @@ func (r *mutationResolver) EditPost(ctx context.Context, input input.PostEditInp
 		changes.Submit("Post", "edit", token.UserID, true, changekeys.Many(log, post), post)
 	}()
 
-	return post, nil
+	return &post, nil
 }
 
-func (r *mutationResolver) MovePost(ctx context.Context, input input.PostMoveInput) ([]models.Post, error) {
+func (r *mutationResolver) MovePost(ctx context.Context, input input.PostMoveInput) ([]*models.Post, error) {
 	token := auth.TokenFromContext(ctx)
 	if !token.Authenticated() || !token.Permitted("post.move") {
 		return nil, errors.New("You are not permitted to edit logs")
@@ -129,23 +144,28 @@ func (r *mutationResolver) MovePost(ctx context.Context, input input.PostMoveInp
 		changes.Submit("Post", "move", token.UserID, true, changekeys.Many(log, posts), posts)
 	}()
 
-	return posts, nil
+	posts2 := make([]*models.Post, len(posts))
+	for i := range posts {
+		posts2[i] = &posts[i]
+	}
+
+	return posts2, nil
 }
 
-func (r *mutationResolver) RemovePost(ctx context.Context, input input.PostRemoveInput) (models.Post, error) {
+func (r *mutationResolver) RemovePost(ctx context.Context, input input.PostRemoveInput) (*models.Post, error) {
 	token := auth.TokenFromContext(ctx)
 	if !token.Authenticated() || !token.Permitted("post.remove") {
-		return models.Post{}, errors.New("You are not permitted to edit logs")
+		return nil, errors.New("You are not permitted to edit logs")
 	}
 
 	post, err := posts.FindID(input.ID)
 	if err != nil {
-		return models.Post{}, errors.New("Post not found (before removing, of course)")
+		return nil, errors.New("Post not found (before removing, of course)")
 	}
 
 	post, err = posts.Remove(post)
 	if err != nil {
-		return models.Post{}, errors.New("Could not remove post: " + err.Error())
+		return nil, errors.New("Could not remove post: " + err.Error())
 	}
 
 	go func() {
@@ -158,5 +178,5 @@ func (r *mutationResolver) RemovePost(ctx context.Context, input input.PostRemov
 		changes.Submit("Post", "remove", token.UserID, true, changekeys.Many(log, post), post)
 	}()
 
-	return post, nil
+	return &post, nil
 }

graph2/queries/story.go

@@ -15,11 +15,16 @@ import (
 	"git.aiterp.net/rpdata/api/models/stories"
 )
 
-func (r *resolver) Story(ctx context.Context, id string) (models.Story, error) {
+func (r *resolver) Story(ctx context.Context, id string) (*models.Story, error) {
-	return stories.FindID(id)
+	story, err := stories.FindID(id)
+	if err != nil {
+		return nil, err
+	}
+
+	return &story, nil
 }
 
-func (r *resolver) Stories(ctx context.Context, filter *stories.Filter) ([]models.Story, error) {
+func (r *resolver) Stories(ctx context.Context, filter *stories.Filter) ([]*models.Story, error) {
 	if filter != nil {
 		if filter.Unlisted != nil && *filter.Unlisted == true {
 			token := auth.TokenFromContext(ctx)
@@ -33,21 +38,31 @@ func (r *resolver) Stories(ctx context.Context, filter *stories.Filter) ([]model
 		}
 	}
 
-	return stories.List(filter)
+	stories, err := stories.List(filter)
+	if err != nil {
+		return nil, err
+	}
+
+	stories2 := make([]*models.Story, len(stories))
+	for i := range stories {
+		stories2[i] = &stories[i]
+	}
+
+	return stories2, nil
 }
 
 // Mutations
 
-func (r *mutationResolver) AddStory(ctx context.Context, input input.StoryAddInput) (models.Story, error) {
+func (r *mutationResolver) AddStory(ctx context.Context, input input.StoryAddInput) (*models.Story, error) {
 	token := auth.TokenFromContext(ctx)
 	if token == nil || !token.Permitted("member", "story.add") {
-		return models.Story{}, errors.New("Permission denied")
+		return nil, errors.New("Permission denied")
 	}
 
 	author := token.UserID
 	if input.Author != nil && *input.Author != author {
 		if !token.Permitted("story.add") {
-			return models.Story{}, errors.New("You are not permitted to add a story in another author's name")
+			return nil, errors.New("You are not permitted to add a story in another author's name")
 		}
 
 		author = *input.Author
@@ -61,82 +76,87 @@ func (r *mutationResolver) AddStory(ctx context.Context, input input.StoryAddInp
 	listed := input.Listed != nil && *input.Listed
 	open := input.Open != nil && *input.Open
 
-	story, err := stories.Add(input.Name, author, input.Category, listed, open, input.Tags, time.Now(), fictionalDate)
+	tags := make([]models.Tag, len(input.Tags))
+	for i := range input.Tags {
+		tags[i] = *input.Tags[i]
+	}
+
+	story, err := stories.Add(input.Name, author, input.Category, listed, open, tags, time.Now(), fictionalDate)
 	if err != nil {
-		return models.Story{}, errors.New("Failed to add story: " + err.Error())
+		return nil, errors.New("Failed to add story: " + err.Error())
 	}
 
 	go changes.Submit("Story", "add", token.UserID, story.Listed, changekeys.Listed(story), story)
 
-	return story, nil
+	return &story, nil
 }
 
-func (r *mutationResolver) AddStoryTag(ctx context.Context, input input.StoryTagAddInput) (models.Story, error) {
+func (r *mutationResolver) AddStoryTag(ctx context.Context, input input.StoryTagAddInput) (*models.Story, error) {
 	token := auth.TokenFromContext(ctx)
 
 	story, err := stories.FindID(input.ID)
 	if err != nil {
-		return models.Story{}, errors.New("Story not found")
+		return nil, errors.New("Story not found")
 	}
 
 	if story.Open {
 		if !token.Permitted("member") {
-			return models.Story{}, errors.New("You are not permitted to edit this story")
+			return nil, errors.New("You are not permitted to edit this story")
 		}
 	} else {
 		if !token.PermittedUser(story.Author, "member", "story.edit") {
-			return models.Story{}, errors.New("You are not permitted to edit this story")
+			return nil, errors.New("You are not permitted to edit this story")
 		}
 	}
 
-	story, err = stories.AddTag(story, input.Tag)
+	story, err = stories.AddTag(story, *input.Tag)
 	if err != nil {
-		return models.Story{}, errors.New("Failed to add story: " + err.Error())
+		return nil, errors.New("Failed to add story: " + err.Error())
 	}
 
 	go changes.Submit("Story", "tag", token.UserID, story.Listed, changekeys.Listed(story), story, input.Tag)
 
-	return story, nil
+	return &story, nil
 }
 
-func (r *mutationResolver) RemoveStoryTag(ctx context.Context, input input.StoryTagRemoveInput) (models.Story, error) {
+func (r *mutationResolver) RemoveStoryTag(ctx context.Context, input input.StoryTagRemoveInput) (*models.Story, error) {
 	token := auth.TokenFromContext(ctx)
 
 	story, err := stories.FindID(input.ID)
 	if err != nil {
-		return models.Story{}, errors.New("Story not found")
+		return nil, errors.New("Story not found")
 	}
 
 	if story.Open {
 		if !token.Permitted("member") {
-			return models.Story{}, errors.New("You are not permitted to edit this story")
+			return nil, errors.New("You are not permitted to edit this story")
 		}
 	} else {
 		if !token.PermittedUser(story.Author, "member", "story.edit") {
-			return models.Story{}, errors.New("You are not permitted to edit this story")
+			return nil, errors.New("You are not permitted to edit this story")
 		}
 	}
 
-	story, err = stories.RemoveTag(story, input.Tag)
+	story, err = stories.RemoveTag(story, *input.Tag)
 	if err != nil {
-		return models.Story{}, errors.New("Failed to add story: " + err.Error())
+		return nil, errors.New("Failed to add story: " + err.Error())
 	}
 
 	go changes.Submit("Story", "untag", token.UserID, story.Listed, changekeys.Listed(story), story, input.Tag)
 
-	return story, nil
+	return &story, nil
 }
 
-func (r *mutationResolver) EditStory(ctx context.Context, input input.StoryEditInput) (models.Story, error) {
+func (r *mutationResolver) EditStory(ctx context.Context, input input.StoryEditInput) (*models.Story, error) {
 	token := auth.TokenFromContext(ctx)
 
 	story, err := stories.FindID(input.ID)
 	if err != nil {
-		return models.Story{}, errors.New("Story not found")
+		return nil, errors.New("Story not found")
 	}
 
 	if !token.PermittedUser(story.Author, "member", "story.edit") {
-		return models.Story{}, errors.New("You are not permitted to remove this story")
+		return nil, errors.New("You are not permitted to remove this story")
 	}
 
 	if input.ClearFictionalDate != nil && *input.ClearFictionalDate {
@@ -145,37 +165,37 @@ func (r *mutationResolver) EditStory(ctx context.Context, input input.StoryEditI
 
 	story, err = stories.Edit(story, input.Name, input.Category, input.Listed, input.Open, input.FictionalDate)
 	if err != nil {
-		return models.Story{}, errors.New("Failed to add story: " + err.Error())
+		return nil, errors.New("Failed to add story: " + err.Error())
 	}
 
 	go changes.Submit("Story", "edit", token.UserID, story.Listed, changekeys.Listed(story), story)
 
-	return story, nil
+	return &story, nil
 }
 
-func (r *mutationResolver) RemoveStory(ctx context.Context, input input.StoryRemoveInput) (models.Story, error) {
+func (r *mutationResolver) RemoveStory(ctx context.Context, input input.StoryRemoveInput) (*models.Story, error) {
 	token := auth.TokenFromContext(ctx)
 
 	story, err := stories.FindID(input.ID)
 	if err != nil {
-		return models.Story{}, errors.New("Story not found")
+		return nil, errors.New("Story not found")
 	}
 
 	if !token.PermittedUser(story.Author, "member", "story.remove") {
-		return models.Story{}, errors.New("You are not permitted to remove this story")
+		return nil, errors.New("You are not permitted to remove this story")
 	}
 
 	story, err = stories.Remove(story)
 	if err != nil {
-		return models.Story{}, err
+		return nil, err
 	}
 
 	err = chapters.RemoveStory(story)
 	if err != nil {
-		return models.Story{}, errors.New("Failed to remove chapters, but story is removed: " + err.Error())
+		return nil, errors.New("Failed to remove chapters, but story is removed: " + err.Error())
 	}
 
 	go changes.Submit("Story", "remove", token.UserID, story.Listed, changekeys.Listed(story), story)
 
-	return story, nil
+	return &story, nil
 }

graph2/queries/tags.go

@@ -7,6 +7,16 @@ import (
 	"git.aiterp.net/rpdata/api/models/tags"
 )
 
-func (r *resolver) Tags(ctx context.Context) ([]models.Tag, error) {
+func (r *resolver) Tags(ctx context.Context) ([]*models.Tag, error) {
-	return tags.List()
+	tags, err := tags.List()
+	if err != nil {
+		return nil, err
+	}
+
+	tags2 := make([]*models.Tag, len(tags))
+	for i := range tags {
+		tags2[i] = &tags[i]
+	}
+
+	return tags2, nil
 }

graph2/queries/token.go

@@ -8,11 +8,11 @@ import (
 	"git.aiterp.net/rpdata/api/models"
 )
 
-func (r *resolver) Token(ctx context.Context) (models.Token, error) {
+func (r *resolver) Token(ctx context.Context) (*models.Token, error) {
 	token := auth.TokenFromContext(ctx)
 	if !token.Authenticated() {
-		return models.Token{}, errors.New("No (valid) token")
+		return nil, errors.New("No (valid) token")
 	}
 
-	return *token, nil
+	return token, nil
 }

graph2/queries/unknownnicks.go

@@ -11,7 +11,7 @@ import (
 
 /// Queries
 
-func (r *resolver) UnknownNicks(ctx context.Context, filter *input.UnknownNicksFilter) ([]models.UnknownNick, error) {
+func (r *resolver) UnknownNicks(ctx context.Context, filter *input.UnknownNicksFilter) ([]*models.UnknownNick, error) {
 	limit := 100
 	if filter != nil {
 		if filter.Limit > 0 {
@@ -19,5 +19,15 @@ func (r *resolver) UnknownNicks(ctx context.Context, filter *input.UnknownNicksF
 		}
 	}
 
-	return unknownnicks.List(limit)
+	nicks, err := unknownnicks.List(limit)
+	if err != nil {
+		return nil, err
+	}
+
+	nicks2 := make([]*models.UnknownNick, len(nicks))
+	for i := range nicks {
+		nicks2[i] = &nicks[i]
+	}
+
+	return nicks2, nil
 }

graph2/schema/root.gql

@@ -41,6 +41,10 @@ type Query {
   chapter(id: String!): Chapter!
 
 
+  # Find comment by ID
+  comment(id: String!): Comment!
+
+
   # Find all distinct tags used in stories
   tags: [Tag!]!
 
@@ -97,6 +101,16 @@ type Mutation {
   removeChapter(input: ChapterRemoveInput!): Chapter!
 
 
+  "Add a comment to a chapter."
+  addComment(input: CommentAddInput!): Comment!
+
+  "Edit a comment in a chapter."
+  editComment(input: CommentEditInput!): Comment!
+
+  "Remove a comemnt in a chapter."
+  removeComment(input: CommentRemoveInput!): Comment!
+
+
   # Add a new log
   addLog(input: LogAddInput!): Log!
 

graph2/schema/types/Change.gql

@@ -27,7 +27,7 @@ type Change {
   objects: [ChangeObject!]!
 }
 
-union ChangeObject = Character | Channel | Log | Post | Story | Tag | Chapter
+union ChangeObject = Character | Channel | Log | Post | Story | Tag | Chapter | Comment
 
 """
 A change key is a key associated with a change, used for filtering

graph2/schema/types/Chapter.gql

@@ -20,6 +20,35 @@ type Chapter {
 
   # The date of edit.
   editedDate: Date!
+
+  "The comment mode."
+  commentMode: ChapterCommentMode!
+
+  "Whether the author has locket comments."
+  commentsLocked: Boolean!
+
+  "A shorthand for checking whether a logged-in user can comment on this chapter."
+  canComment: Boolean!
+
+  "Get all chapter comments."
+  comments(limit: Int): [Comment!]!
+}
+
+"""
+The possibles modes of comments for a chapter.
+"""
+enum ChapterCommentMode {
+  "Comments are disabled and hidden."
+  Disabled
+
+  "Comments should be shown as typical news article comments."
+  Article
+
+  "Comments should be shown in a compact form suitable for many small messages."
+  Chat
+
+  "Comments are going to be shown as omni-tool messages."
+  Message
 }
 
 # Input for addChapter mutation
@@ -41,6 +70,9 @@ input ChapterAddInput {
 
   # Optionally, assign a fictional date for the chapter
   fictionalDate: Date
+
+  "The comment mode for the chapter."
+  commentMode: ChapterCommentMode
 }
 
 # Input for editChapter mutation
@@ -59,6 +91,12 @@ input ChapterEditInput {
 
   # Remove the fictional date for a chapter
   clearFictionalDate: Boolean
+
+  "Set the comment mode for the chapter"
+  commentMode: ChapterCommentMode
+
+  "Set whether the chapter comments are locked"
+  commentsLocked: Boolean
 }
 
 # Input for moveChapter mutation

graph2/schema/types/Comment.gql

@@ -0,0 +1,91 @@
+"""
+A Comment represents a comment to a story chapter.
+"""
+type Comment {
+  "A unique ID of the change."
+  id: String!
+
+  "subject"
+  subject: String!
+
+  "The chapter ID the comment belongs to."
+  chapterId: String!
+
+  "The comment's author."
+  author: String!
+
+  "The displayed name of the character. This may be the same as character.name, but it does not need to be."
+  characterName: String!
+
+  "The character associated with the comment."
+  character: Character
+
+  "The fictional (IC) date of the comment."
+  fictionalDate: Date
+
+  "The date of creation."
+  createdDate: Date!
+
+  "The date of the last edit."
+  editedDate: Date!
+
+  "The markdown source of the comment."
+  source: String!
+}
+
+"""
+Input for the addComment mutation
+"""
+input CommentAddInput {
+  "What chapter to comment on."
+  chapterId: String!
+
+  "The markdown source of the comment."
+  source: String!
+
+  "The name of the character associated with this comment."
+  characterName: String!
+
+  "Optioanlly, a character ID."
+  characterId: String
+
+  "Optional in-universe date of the comment."
+  fictionalDate: Date
+
+  "Optional subject to add to the comment, only shown in some modes."
+  subject: String
+}
+
+"""
+Input for the editComment mutation
+"""
+input CommentEditInput {
+  "What comment to edit."
+  commentId: String!
+
+  "Change the markdown source."
+  source: String
+
+  "Change the name of the character associated with this comment."
+  characterName: String
+
+  "Change the character assocaited with this comment."
+  characterId: String
+
+  "Change the optional in-universe date of the comment."
+  fictionalDate: Date
+
+  "Set to clear the fictional date."
+  clearFictionalDate: Boolean
+
+  "Change the optional subject for the comment, only shown in some modes."
+  subject: String
+}
+
+"""
+Input for the removeComment mutation
+"""
+input CommentRemoveInput {
+  "What comment to edit."
+  commentId: String!
+}

graph2/types/change.go

@@ -2,6 +2,7 @@ package types
 
 import (
 	"context"
+	"log"
 
 	"git.aiterp.net/rpdata/api/graph2/input"
 	"git.aiterp.net/rpdata/api/models"
@@ -12,9 +13,13 @@ type changeResolver struct{}
 func (r *changeResolver) Objects(ctx context.Context, obj *models.Change) ([]input.ChangeObject, error) {
 	objects := obj.Objects()
 
-	results := make([]input.ChangeObject, len(objects))
+	results := make([]input.ChangeObject, 0, len(objects))
-	for i := range objects {
+	for _, object := range objects {
-		results[i] = objects[i]
+		if changeObject, ok := object.(input.ChangeObject); ok {
+			results = append(results, changeObject)
+		} else {
+			log.Printf("Type %T needs ChangeObject impl", object)
+		}
 	}
 
 	return results, nil

graph2/types/chapter.go

@@ -2,9 +2,11 @@ package types
 
 import (
 	"context"
+	"errors"
 	"time"
 
 	"git.aiterp.net/rpdata/api/models"
+	"git.aiterp.net/rpdata/api/models/comments"
 )
 
 type chapterResolver struct{}
@@ -17,5 +19,32 @@ func (r *chapterResolver) FictionalDate(ctx context.Context, chapter *models.Cha
 	return &chapter.FictionalDate, nil
 }
 
+func (r *chapterResolver) Comments(ctx context.Context, chapter *models.Chapter, limit *int) ([]*models.Comment, error) {
+	limitValue := 0
+	if limit != nil {
+		if *limit < 0 {
+			return nil, errors.New("Limit cannot be negative")
+		}
+
+		limitValue = *limit
+	}
+
+	if !chapter.CommentMode.IsEnabled() {
+		return nil, nil
+	}
+
+	comments, err := comments.ListChapterID(chapter.ID, limitValue)
+	if err != nil {
+		return nil, err
+	}
+
+	comments2 := make([]*models.Comment, len(comments))
+	for i := range comments {
+		comments2[i] = &comments[i]
+	}
+
+	return comments2, nil
+}
+
 // ChapterResolver is a resolver
 var ChapterResolver chapterResolver

graph2/types/comment.go

@@ -0,0 +1,41 @@
+package types
+
+import (
+	"context"
+	"errors"
+	"time"
+
+	"git.aiterp.net/rpdata/api/internal/loader"
+	"git.aiterp.net/rpdata/api/models"
+)
+
+type commentResolver struct{}
+
+func (r *commentResolver) Character(ctx context.Context, obj *models.Comment) (*models.Character, error) {
+	if obj.CharacterID == "" {
+		return nil, nil
+	}
+
+	loader := loader.FromContext(ctx)
+	if loader == nil {
+		return nil, errors.New("no loader")
+	}
+
+	character, err := loader.Character("id", obj.CharacterID)
+	if err != nil {
+		return nil, err
+	}
+
+	return &character, nil
+}
+
+func (r *commentResolver) FictionalDate(ctx context.Context, obj *models.Comment) (*time.Time, error) {
+	if obj.FictionalDate.IsZero() {
+		return nil, nil
+	}
+
+	return &obj.FictionalDate, nil
+}
+
+// CommentResolver is a resolver
+var CommentResolver commentResolver

graph2/types/file.go

@@ -1,16 +0,0 @@
-package types
-
-import (
-	"context"
-
-	"git.aiterp.net/rpdata/api/models"
-)
-
-type fileResolver struct{}
-
-func (r *fileResolver) Size(ctx context.Context, file *models.File) (int, error) {
-	return int(file.Size), nil
-}
-
-// FileResolver is a resolver
-var FileResolver fileResolver

graph2/types/log.go

@@ -11,30 +11,46 @@ import (
 
 type logResolver struct{}
 
-func (r *logResolver) Channel(ctx context.Context, log *models.Log) (models.Channel, error) {
+func (r *logResolver) Channel(ctx context.Context, log *models.Log) (*models.Channel, error) {
-	loader := loader.FromContext(ctx)
-	if loader == nil {
-		return models.Channel{}, errors.New("no loader")
-	}
-
-	return loader.Channel("name", log.ChannelName)
-}
-
-func (r *logResolver) Characters(ctx context.Context, log *models.Log) ([]models.Character, error) {
 	loader := loader.FromContext(ctx)
 	if loader == nil {
 		return nil, errors.New("no loader")
 	}
 
-	return loader.Characters("id", log.CharacterIDs...)
+	return loader.Channel("name", log.ChannelName)
 }
 
-func (r *logResolver) Posts(ctx context.Context, log *models.Log, kinds []string) ([]models.Post, error) {
+func (r *logResolver) Characters(ctx context.Context, log *models.Log) ([]*models.Character, error) {
-	return posts.List(&posts.Filter{
+	loader := loader.FromContext(ctx)
-		LogID: &log.ShortID,
+	if loader == nil {
-		Kind:  kinds,
+		return nil, errors.New("no loader")
-		Limit: 0,
+	}
-	})
+
+	characters, err := loader.Characters("id", log.CharacterIDs...)
+	if err != nil {
+		return nil, err
+	}
+
+	characters2 := make([]*models.Character, len(characters))
+	for i := range characters {
+		characters2[i] = &characters[i]
+	}
+
+	return characters2, nil
+}
+
+func (r *logResolver) Posts(ctx context.Context, log *models.Log, kinds []string) ([]*models.Post, error) {
+	posts, err := posts.List(&posts.Filter{LogID: &log.ShortID, Kind: kinds, Limit: 0})
+	if err != nil {
+		return nil, err
+	}
+
+	posts2 := make([]*models.Post, len(posts))
+	for i := range posts {
+		posts2[i] = &posts[i]
+	}
+
+	return posts2, nil
 }
 
 // LogResolver is a resolver

graph2/types/story.go

@@ -19,8 +19,18 @@ func (r *storyResolver) FictionalDate(ctx context.Context, story *models.Story)
 	return &story.FictionalDate, nil
 }
 
-func (r *storyResolver) Chapters(ctx context.Context, story *models.Story) ([]models.Chapter, error) {
+func (r *storyResolver) Chapters(ctx context.Context, story *models.Story) ([]*models.Chapter, error) {
-	return chapters.ListStoryID(story.ID)
+	chapters, err := chapters.ListStoryID(story.ID)
+	if err != nil {
+		return nil, err
+	}
+
+	chapters2 := make([]*models.Chapter, len(chapters))
+	for i := range chapters {
+		chapters2[i] = &chapters[i]
+	}
+
+	return chapters2, nil
 }
 
 // StoryResolver is a resolver

graph2/types/token.go

@@ -9,8 +9,13 @@ import (
 
 type tokenResolver struct{}
 
-func (r *tokenResolver) User(ctx context.Context, token *models.Token) (models.User, error) {
+func (r *tokenResolver) User(ctx context.Context, token *models.Token) (*models.User, error) {
-	return users.Find(token.UserID)
+	user, err := users.Find(token.UserID)
+	if err != nil {
+		return nil, err
+	}
+
+	return &user, nil
 }
 
 // TokenResolver is a resolver

internal/instrumentation/prometheus.go

@@ -0,0 +1,346 @@
+package instrumentation
+
+import (
+	"context"
+	"reflect"
+	"sort"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/99designs/gqlgen/graphql"
+	prometheusclient "github.com/prometheus/client_golang/prometheus"
+)
+
+const (
+	existStatusFailure = "failure"
+	exitStatusSuccess  = "success"
+)
+
+var latencyMapMutex sync.Mutex
+var latencyMap = make(map[string]float64, 128)
+
+type ctxKeyType string
+
+var ctxKey = ctxKeyType("metricglobal")
+
+var (
+	requestStartedCounter         prometheusclient.Counter
+	requestCompletedCounter       prometheusclient.Counter
+	requestFailureCounter         *prometheusclient.CounterVec
+	requestSuccessCounter         *prometheusclient.CounterVec
+	requestComplexityHisto        prometheusclient.Histogram
+	resolverStartedCounter        *prometheusclient.CounterVec
+	resolverCompletedCounter      *prometheusclient.CounterVec
+	timeToResolveField            *prometheusclient.HistogramVec
+	timeToHandleRequest           *prometheusclient.HistogramVec
+	timeToHandleRequestQueryMAvg  *prometheusclient.GaugeVec
+	timeToHandleRequestQueryTotal *prometheusclient.CounterVec
+	responseSizeMAvg              *prometheusclient.GaugeVec
+	responseSizeTotal             *prometheusclient.CounterVec
+)
+
+// Globals is monitoring data.
+type Globals struct {
+	sync.Mutex
+
+	Queries []string
+	Failed  bool
+}
+
+// Register registers the prometheus metrics.
+func Register() {
+	requestStartedCounter = prometheusclient.NewCounter(
+		prometheusclient.CounterOpts{
+			Name: "graphql_request_started_total",
+			Help: "Total number of requests started on the graphql server.",
+		},
+	)
+
+	requestCompletedCounter = prometheusclient.NewCounter(
+		prometheusclient.CounterOpts{
+			Name: "graphql_request_completed_total",
+			Help: "Total number of requests completed on the graphql server.",
+		},
+	)
+
+	requestFailureCounter = prometheusclient.NewCounterVec(
+		prometheusclient.CounterOpts{
+			Name: "graphql_request_failures",
+			Help: "Number of requests with either success or failure status.",
+		},
+		[]string{"queries"},
+	)
+	requestSuccessCounter = prometheusclient.NewCounterVec(
+		prometheusclient.CounterOpts{
+			Name: "graphql_request_successes",
+			Help: "Number of requests with either success or failure status.",
+		},
+		[]string{"queries"},
+	)
+
+	requestComplexityHisto = prometheusclient.NewHistogram(
+		prometheusclient.HistogramOpts{
+			Name:    "graphql_request_complexity",
+			Help:    "The complexity value of incoming queries.",
+			Buckets: prometheusclient.LinearBuckets(100, 25, 9),
+		},
+	)
+
+	resolverStartedCounter = prometheusclient.NewCounterVec(
+		prometheusclient.CounterOpts{
+			Name: "graphql_resolver_started_total",
+			Help: "Total number of resolver started on the graphql server.",
+		},
+		[]string{"object", "field"},
+	)
+
+	resolverCompletedCounter = prometheusclient.NewCounterVec(
+		prometheusclient.CounterOpts{
+			Name: "graphql_resolver_completed_total",
+			Help: "Total number of resolver completed on the graphql server.",
+		},
+		[]string{"object", "field"},
+	)
+
+	timeToResolveField = prometheusclient.NewHistogramVec(prometheusclient.HistogramOpts{
+		Name:    "graphql_resolver_duration_ms",
+		Help:    "The time taken to resolve a field by graphql server.",
+		Buckets: prometheusclient.ExponentialBuckets(1, 2, 11),
+	}, []string{"exitStatus"})
+
+	timeToHandleRequest = prometheusclient.NewHistogramVec(prometheusclient.HistogramOpts{
+		Name:    "graphql_request_duration_ms",
+		Help:    "The time taken to handle a request by graphql server.",
+		Buckets: prometheusclient.ExponentialBuckets(1, 2, 11),
+	}, []string{"exitStatus"})
+
+	timeToHandleRequestQueryMAvg = prometheusclient.NewGaugeVec(
+		prometheusclient.GaugeOpts{
+			Name: "graphql_request_query_duration_mavg_ms",
+			Help: "Moving average of graphql request query duration for a query set.",
+		},
+		[]string{"queries"},
+	)
+	timeToHandleRequestQueryTotal = prometheusclient.NewCounterVec(
+		prometheusclient.CounterOpts{
+			Name: "graphql_request_query_duration_total_ms",
+			Help: "Total duration spent responding to a query.",
+		},
+		[]string{"queries"},
+	)
+
+	responseSizeMAvg = prometheusclient.NewGaugeVec(
+		prometheusclient.GaugeOpts{
+			Name: "graphql_response_size_mavg_bytes",
+			Help: "Moving average of graphql response size for a query set.",
+		},
+		[]string{"queries"},
+	)
+	responseSizeTotal = prometheusclient.NewCounterVec(
+		prometheusclient.CounterOpts{
+			Name: "graphql_response_size_total_bytes",
+			Help: "Total bytes of response data to a query.",
+		},
+		[]string{"queries"},
+	)
+
+	prometheusclient.MustRegister(
+		requestStartedCounter,
+		requestCompletedCounter,
+		requestSuccessCounter,
+		requestFailureCounter,
+		requestComplexityHisto,
+		resolverStartedCounter,
+		resolverCompletedCounter,
+		timeToResolveField,
+		timeToHandleRequest,
+		timeToHandleRequestQueryMAvg,
+		timeToHandleRequestQueryTotal,
+		responseSizeMAvg,
+		responseSizeTotal,
+	)
+}
+
+// UnRegister unregisters
+func UnRegister() {
+	prometheusclient.Unregister(requestStartedCounter)
+	prometheusclient.Unregister(requestCompletedCounter)
+	prometheusclient.Unregister(requestSuccessCounter)
+	prometheusclient.Unregister(requestFailureCounter)
+	prometheusclient.Unregister(requestComplexityHisto)
+	prometheusclient.Unregister(resolverStartedCounter)
+	prometheusclient.Unregister(resolverCompletedCounter)
+	prometheusclient.Unregister(timeToResolveField)
+	prometheusclient.Unregister(timeToHandleRequest)
+	prometheusclient.Unregister(timeToHandleRequestQueryMAvg)
+	prometheusclient.Unregister(timeToHandleRequestQueryTotal)
+	prometheusclient.Unregister(responseSizeMAvg)
+	prometheusclient.Unregister(responseSizeTotal)
+}
+
+// ResolverMiddleware is a resolver middleware that logs metrics for prometheus.
+func ResolverMiddleware() graphql.FieldMiddleware {
+	return func(ctx context.Context, next graphql.Resolver) (interface{}, error) {
+		rctx := graphql.GetResolverContext(ctx)
+
+		resolverStartedCounter.WithLabelValues(rctx.Object, rctx.Field.Name).Inc()
+
+		observerStart := time.Now()
+
+		path := rctx.Path()
+		if len(path) == 1 {
+			if globals, ok := ctx.Value(ctxKey).(*Globals); ok {
+				globals.Lock()
+				if rctx.Field.Field != nil {
+					globals.Queries = append(globals.Queries, rctx.Field.Name+"("+argsLabel(rctx.Args)+")")
+				} else if name, ok := path[0].(string); ok {
+					globals.Queries = append(globals.Queries, name)
+				}
+				globals.Unlock()
+			}
+		}
+
+		res, err := next(ctx)
+
+		var exitStatus string
+		if err != nil {
+			exitStatus = existStatusFailure
+
+			if globals, ok := ctx.Value(ctxKey).(*Globals); ok {
+				globals.Lock()
+				globals.Failed = true
+				globals.Unlock()
+			}
+		} else {
+			exitStatus = exitStatusSuccess
+		}
+
+		exitStatusLabel := prometheusclient.Labels{"exitStatus": exitStatus}
+		timeToResolveField.With(exitStatusLabel).Observe(float64(time.Since(observerStart).Nanoseconds() / int64(time.Millisecond)))
+
+		resolverCompletedCounter.WithLabelValues(rctx.Object, rctx.Field.Name).Inc()
+
+		return res, err
+	}
+}
+
+// RequestMiddleware is a request middleware that logs metrics for prometheus. It looks busy, but the
+// overhead is less than 10µs.
+func RequestMiddleware() graphql.RequestMiddleware {
+	return func(ctx context.Context, next func(ctx context.Context) []byte) []byte {
+		requestStartedCounter.Inc()
+
+		// Store some values in a global context.
+		globals := Globals{}
+
+		// Measure the time to serve the request
+		observerStart := time.Now()
+		res := next(context.WithValue(ctx, ctxKey, &globals))
+		observedDuration := time.Since(observerStart)
+		observedDurationMS := float64(observedDuration.Nanoseconds()) / float64(time.Millisecond)
+
+		reqCtx := graphql.GetRequestContext(ctx)
+
+		// exitStatus label
+		exitStatusLabel := prometheusclient.Labels{"exitStatus": exitStatusSuccess}
+		if globals.Failed {
+			exitStatusLabel["exitStatus"] = existStatusFailure
+		}
+
+		// queries label
+		sort.Strings(globals.Queries)
+		queriesStr := strings.Join(globals.Queries, ";")
+		queriesLabel := prometheusclient.Labels{
+			"queries": queriesStr,
+		}
+
+		// Write metrics
+		timeToHandleRequest.With(exitStatusLabel).Observe(observedDurationMS)
+		requestCompletedCounter.Inc()
+		if len(globals.Queries) > 0 {
+			if globals.Failed {
+				requestFailureCounter.With(queriesLabel).Inc()
+			} else {
+				requestSuccessCounter.With(queriesLabel).Inc()
+			}
+
+			timeToHandleRequestQueryMAvg.With(queriesLabel).Set(movingAvgLatency("ms:"+queriesStr, observedDurationMS))
+			timeToHandleRequestQueryTotal.With(queriesLabel).Add(observedDurationMS)
+			responseSizeMAvg.With(queriesLabel).Set(movingAvgLatency("bytes:"+queriesStr, float64(len(res))))
+			responseSizeTotal.With(queriesLabel).Add(float64(len(res)))
+		}
+		requestComplexityHisto.Observe(float64(reqCtx.OperationComplexity))
+
+		return res
+	}
+}
+
+func movingAvgLatency(key string, sample float64) float64 {
+	latencyMapMutex.Lock()
+	latency, ok := latencyMap[key]
+	if ok {
+		latency = (latency * 0.9) + (sample * 0.1)
+		latencyMap[key] = latency
+	} else {
+		latencyMap[key] = sample
+		latency = sample
+	}
+	latencyMapMutex.Unlock()
+
+	return latency
+}
+
+func argsLabel(args map[string]interface{}) string {
+	result := ""
+
+	for key, value := range args {
+		if len(result) > 0 {
+			result += ","
+		}
+
+		result = key
+
+		rv := reflect.ValueOf(value)
+		for rv.Kind() == reflect.Ptr {
+			rv = rv.Elem()
+		}
+
+		if rv.Kind() != reflect.Struct {
+			continue
+		}
+
+		result += "{"
+
+		first := true
+		for i := 0; i < rv.NumField(); i++ {
+			rf := rv.Field(i)
+			if (rf.Kind() == reflect.Ptr || rf.Kind() == reflect.Interface) && rf.IsNil() {
+				continue
+			}
+
+			rtf := rv.Type().Field(i)
+
+			// Empty limits are as good as no limit
+			if rtf.Name == "Limit" && rf.Type().Kind() == reflect.Int && rf.Int() <= 0 {
+				continue
+			}
+
+			if !first {
+				result += ","
+			}
+			first = false
+
+			jsonTag := rtf.Tag.Get("json")
+			if jsonTag != "" {
+				result += jsonTag
+			} else {
+				result += strings.ToLower(rtf.Name[0:1]) + rtf.Name[1:]
+			}
+		}
+
+		result += "}"
+	}
+
+	return result
+}

internal/loader/channel.go

@@ -11,13 +11,13 @@ import (
 )
 
 // Channel gets a character by key
-func (loader *Loader) Channel(key, value string) (models.Channel, error) {
+func (loader *Loader) Channel(key, value string) (*models.Channel, error) {
 	if !strings.HasPrefix(key, "Channel.") {
 		key = "Channel." + key
 	}
 
 	if loader.loaders[key] == nil {
-		return models.Channel{}, errors.New("unsupported key")
+		return nil, errors.New("unsupported key")
 	}
 
 	loader.loadPrimed(key)
@@ -25,15 +25,15 @@ func (loader *Loader) Channel(key, value string) (models.Channel, error) {
 	thunk := loader.loaders[key].Load(loader.ctx, dataloader.StringKey(value))
 	res, err := thunk()
 	if err != nil {
-		return models.Channel{}, err
+		return nil, err
 	}
 
 	channel, ok := res.(models.Channel)
 	if !ok {
-		return channel, errors.New("incorrect type")
+		return nil, errors.New("incorrect type")
 	}
 
-	return channel, nil
+	return &channel, nil
 }
 
 // PrimeChannels primes channels for loading along with the first one.

models/change-model.go

@@ -24,12 +24,14 @@ const (
 	ChangeModelTag ChangeModel = "Tag"
 	// ChangeModelChapter is a value of ChangeModel
 	ChangeModelChapter ChangeModel = "Chapter"
+	// ChangeModelComment is a value of ChangeModel
+	ChangeModelComment ChangeModel = "Comment"
 )
 
 // IsValid returns true if the underlying string is one of the correct values.
 func (e ChangeModel) IsValid() bool {
 	switch e {
-	case ChangeModelCharacter, ChangeModelChannel, ChangeModelLog, ChangeModelPost, ChangeModelStory, ChangeModelTag, ChangeModelChapter:
+	case ChangeModelCharacter, ChangeModelChannel, ChangeModelLog, ChangeModelPost, ChangeModelStory, ChangeModelTag, ChangeModelChapter, ChangeModelComment:
 		return true
 	}
 	return false

models/change.go

@@ -19,6 +19,7 @@ type Change struct {
 	Stories    []Story     `bson:"stories"`
 	Tags       []Tag       `bson:"tags"`
 	Chapters   []Chapter   `bson:"chapters"`
+	Comments   []Comment   `bson:"comments"`
 }
 
 // ChangeKey is a key for a change that can be used when subscribing to them.
@@ -29,28 +30,31 @@ type ChangeKey struct {
 
 // Objects makes a combined, mixed array of all the models stored in this change.
 func (change *Change) Objects() []interface{} {
-	data := make([]interface{}, 0, len(change.Logs)+len(change.Characters)+len(change.Channels)+len(change.Posts)+len(change.Stories)+len(change.Tags)+len(change.Chapters))
+	data := make([]interface{}, 0, len(change.Logs)+len(change.Characters)+len(change.Channels)+len(change.Posts)+len(change.Stories)+len(change.Tags)+len(change.Chapters)+len(change.Comments))
 
 	for _, log := range change.Logs {
-		data = append(data, log)
+		data = append(data, &log)
 	}
 	for _, channel := range change.Channels {
-		data = append(data, channel)
+		data = append(data, &channel)
 	}
 	for _, character := range change.Characters {
-		data = append(data, character)
+		data = append(data, &character)
 	}
 	for _, post := range change.Posts {
-		data = append(data, post)
+		data = append(data, &post)
 	}
 	for _, story := range change.Stories {
-		data = append(data, story)
+		data = append(data, &story)
 	}
 	for _, tag := range change.Tags {
-		data = append(data, tag)
+		data = append(data, &tag)
 	}
 	for _, chapter := range change.Chapters {
-		data = append(data, chapter)
+		data = append(data, &chapter)
+	}
+	for _, comment := range change.Comments {
+		data = append(data, &comment)
 	}
 
 	return data

models/changekeys/many_test.go

@@ -22,6 +22,7 @@ func TestMany(t *testing.T) {
 			},
 		},
 		models.Post{ID: "P5"},
+		models.Comment{ID: "SCC1234"},
 	}
 
 	expectations := []models.ChangeKey{
@@ -33,6 +34,7 @@ func TestMany(t *testing.T) {
 		{Model: "Character", ID: "C17"},
 		{Model: "Channel", ID: "#Stuff"},
 		{Model: "Post", ID: "P5"},
+		{Model: "Comment", ID: "SCC1234"},
 	}
 
 	results := changekeys.Many(data...)

models/changekeys/one_test.go

@@ -28,6 +28,11 @@ func TestOne(t *testing.T) {
 			models.Log{ID: "2018-10-23_210303325_RedrockAgency", ShortID: "L807"},
 			models.ChangeKey{Model: "Log", ID: "2018-10-23_210303325_RedrockAgency"},
 		},
+		{
+			"Comment_SCC1234",
+			models.Comment{ID: "SCC1234"},
+			models.ChangeKey{Model: "Comment", ID: "SCC1234"},
+		},
 	}
 
 	for _, row := range table {

models/changes/submit.go

@@ -81,6 +81,10 @@ func Submit(model, op, author string, listed bool, keys []models.ChangeKey, obje
 			change.Chapters = append(change.Chapters, object)
 		case []models.Chapter:
 			change.Chapters = append(change.Chapters, object...)
+		case models.Comment:
+			change.Comments = append(change.Comments, object)
+		case []models.Comment:
+			change.Comments = append(change.Comments, object...)
 		default:
 			log.Printf("Warning: unrecognized object in change: %#+v", object)
 		}

models/changes/subscribe.go

@@ -12,13 +12,13 @@ var subList []*subscription
 
 type subscription struct {
 	Keys     map[string]bool
-	Channel  chan<- models.Change
+	Channel  chan<- *models.Change
 	WildCard bool
 }
 
 // Subscribe subscribes to all changes.
-func Subscribe(ctx context.Context, keys []models.ChangeKey, wildcard bool) <-chan models.Change {
+func Subscribe(ctx context.Context, keys []models.ChangeKey, wildcard bool) <-chan *models.Change {
-	channel := make(chan models.Change, 64)
+	channel := make(chan *models.Change, 64)
 	sub := &subscription{
 		Keys:     make(map[string]bool, len(keys)),
 		Channel:  channel,
@@ -58,16 +58,18 @@ func pushToSubscribers(change models.Change) {
 	subMutex.Lock()
 SubLoop:
 	for _, sub := range subList {
+		changeCopy := change
+
 		if sub.WildCard && change.Listed {
 			select {
-			case sub.Channel <- change:
+			case sub.Channel <- &changeCopy:
 			default:
 			}
 		} else {
 			for _, key := range keys {
 				if sub.Keys[key] {
 					select {
-					case sub.Channel <- change:
+					case sub.Channel <- &changeCopy:
 					default:
 					}
 

models/channel.go

@@ -8,3 +8,9 @@ type Channel struct {
 	EventName    string `bson:"eventName,omitempty"`
 	LocationName string `bson:"locationName,omitempty"`
 }
+
+// IsChangeObject is an interface implementation to identify it as a valid
+// ChangeObject in GQL.
+func (*Channel) IsChangeObject() {
+	panic("this method is a dummy, and so is its caller")
+}

models/chapter-comment-mode.go

@@ -0,0 +1,57 @@
+package models
+
+import (
+	"fmt"
+	"io"
+)
+
+// ChapterCommentMode represents the kind of tags.
+type ChapterCommentMode string
+
+const (
+	// ChapterCommentModeDisabled is a chapter comment mode, see GraphQL documentation.
+	ChapterCommentModeDisabled ChapterCommentMode = "Disabled"
+
+	// ChapterCommentModeArticle is a chapter comment mode, see GraphQL documentation.
+	ChapterCommentModeArticle ChapterCommentMode = "Article"
+
+	// ChapterCommentModeChat is a chapter comment mode, see GraphQL documentation.
+	ChapterCommentModeChat ChapterCommentMode = "Chat"
+
+	// ChapterCommentModeMessage is a chapter comment mode, see GraphQL documentation.
+	ChapterCommentModeMessage ChapterCommentMode = "Message"
+)
+
+// UnmarshalGQL unmarshals
+func (e *ChapterCommentMode) UnmarshalGQL(v interface{}) error {
+	str, ok := v.(string)
+	if !ok {
+		return fmt.Errorf("enums must be strings")
+	}
+
+	*e = ChapterCommentMode(str)
+	switch *e {
+	case ChapterCommentModeDisabled, ChapterCommentModeArticle, ChapterCommentModeChat, ChapterCommentModeMessage:
+		return nil
+	default:
+		return fmt.Errorf("%s is not a valid ChapterCommentMode", str)
+	}
+}
+
+// IsEnabled returns true if comments are enabled.
+func (e ChapterCommentMode) IsEnabled() bool {
+	return e != ChapterCommentModeDisabled && len(e) != 0
+}
+
+// MarshalGQL turns it into a JSON string
+func (e ChapterCommentMode) MarshalGQL(w io.Writer) {
+	// Backwards compatibility: Empty value means disabled.
+	if len(e) == 0 {
+		w.Write(disabledChapterCommentModeBytes)
+		return
+	}
+
+	fmt.Fprint(w, "\""+string(e)+"\"")
+}
+
+var disabledChapterCommentModeBytes = []byte(`"Disabled"`)

models/chapter.go

@@ -4,12 +4,25 @@ import "time"
 
 // A Chapter is a part of a story.
 type Chapter struct {
-	ID            string    `bson:"_id"`
+	ID             string             `bson:"_id"`
-	StoryID       string    `bson:"storyId"`
+	StoryID        string             `bson:"storyId"`
-	Title         string    `bson:"title"`
+	Title          string             `bson:"title"`
-	Author        string    `bson:"author"`
+	Author         string             `bson:"author"`
-	Source        string    `bson:"source"`
+	Source         string             `bson:"source"`
-	CreatedDate   time.Time `bson:"createdDate"`
+	CreatedDate    time.Time          `bson:"createdDate"`
-	FictionalDate time.Time `bson:"fictionalDate,omitempty"`
+	FictionalDate  time.Time          `bson:"fictionalDate,omitempty"`
-	EditedDate    time.Time `bson:"editedDate"`
+	EditedDate     time.Time          `bson:"editedDate"`
+	CommentMode    ChapterCommentMode `bson:"commentMode"`
+	CommentsLocked bool               `bson:"commentsLocked"`
 }
+
+// CanComment returns true if the chapter can be commented to.
+func (chapter *Chapter) CanComment() bool {
+	return !chapter.CommentsLocked && chapter.CommentMode.IsEnabled()
+}
+
+// IsChangeObject is an interface implementation to identify it as a valid
+// ChangeObject in GQL.
+func (*Chapter) IsChangeObject() {
+	panic("this method is a dummy, and so is its caller")
+}

models/chapters/add.go

@@ -8,15 +8,17 @@ import (
 )
 
 // Add adds a new chapter.
-func Add(story models.Story, title, author, source string, createdDate time.Time, finctionalDate *time.Time) (models.Chapter, error) {
+func Add(story models.Story, title, author, source string, createdDate time.Time, finctionalDate *time.Time, commentMode models.ChapterCommentMode) (models.Chapter, error) {
 	chapter := models.Chapter{
-		ID:          makeChapterID(),
+		ID:             makeChapterID(),
-		StoryID:     story.ID,
+		StoryID:        story.ID,
-		Title:       title,
+		Title:          title,
-		Author:      author,
+		Author:         author,
-		Source:      source,
+		Source:         source,
-		CreatedDate: createdDate,
+		CreatedDate:    createdDate,
-		EditedDate:  createdDate,
+		EditedDate:     createdDate,
+		CommentMode:    commentMode,
+		CommentsLocked: false,
 	}
 
 	if finctionalDate != nil {

models/chapters/edit.go

@@ -9,7 +9,7 @@ import (
 
 // Edit edits a chapter, and updates EditedDate. While many Edit functions cheat if there's nothing to
 // change, this functill will due to EditedDate.
-func Edit(chapter models.Chapter, title, source *string, fictionalDate *time.Time) (models.Chapter, error) {
+func Edit(chapter models.Chapter, title, source *string, fictionalDate *time.Time, commentMode *models.ChapterCommentMode, commentsLocked *bool) (models.Chapter, error) {
 	now := time.Now()
 	changes := bson.M{"editedDate": now}
 
@@ -28,6 +28,14 @@ func Edit(chapter models.Chapter, title, source *string, fictionalDate *time.Tim
 		changes["fictionalDate"] = *fictionalDate
 		edited.FictionalDate = *fictionalDate
 	}
+	if commentMode != nil && *commentMode != chapter.CommentMode {
+		changes["commentMode"] = *commentMode
+		edited.CommentMode = *commentMode
+	}
+	if commentsLocked != nil && *commentsLocked != chapter.CommentsLocked {
+		changes["commentsLocked"] = *commentsLocked
+		edited.CommentsLocked = *commentsLocked
+	}
 
 	err := collection.UpdateId(chapter.ID, bson.M{"$set": changes})
 	if err != nil {

models/character.go

@@ -29,3 +29,9 @@ func (character *Character) HasNick(nick string) bool {
 
 	return false
 }
+
+// IsChangeObject is an interface implementation to identify it as a valid
+// ChangeObject in GQL.
+func (*Character) IsChangeObject() {
+	panic("this method is a dummy, and so is its caller")
+}

models/comment.go

@@ -0,0 +1,23 @@
+package models
+
+import "time"
+
+// A Comment is a comment on a chapter.
+type Comment struct {
+	ID            string    `bson:"_id"`
+	ChapterID     string    `bson:"chapterId"`
+	Subject       string    `bson:"subject"`
+	Author        string    `bson:"author"`
+	CharacterName string    `bson:"characterName"`
+	CharacterID   string    `bson:"characterId"`
+	FictionalDate time.Time `bson:"fictionalDate"`
+	CreatedDate   time.Time `bson:"createdDate"`
+	EditedDate    time.Time `bson:"editeddDate"`
+	Source        string    `bson:"source"`
+}
+
+// IsChangeObject is an interface implementation to identify it as a valid
+// ChangeObject in GQL.
+func (*Comment) IsChangeObject() {
+	panic("this method is a dummy, and so is its caller")
+}

models/comments/add.go

@@ -0,0 +1,35 @@
+package comments
+
+import (
+	"time"
+
+	"git.aiterp.net/rpdata/api/models"
+)
+
+// Add adds a comment.
+func Add(chapter models.Chapter, subject, author, source, characterName string, character *models.Character, createdDate time.Time, fictionalDate time.Time) (models.Comment, error) {
+	characterID := ""
+	if character != nil {
+		characterID = character.ID
+	}
+
+	comment := models.Comment{
+		ID:            makeCommentID(),
+		ChapterID:     chapter.ID,
+		Subject:       subject,
+		Author:        author,
+		CharacterName: characterName,
+		CharacterID:   characterID,
+		FictionalDate: fictionalDate,
+		CreatedDate:   createdDate,
+		EditedDate:    createdDate,
+		Source:        source,
+	}
+
+	err := collection.Insert(comment)
+	if err != nil {
+		return models.Comment{}, err
+	}
+
+	return comment, nil
+}

models/comments/db.go

@@ -0,0 +1,66 @@
+package comments
+
+import (
+	"crypto/rand"
+	"encoding/binary"
+	"strconv"
+
+	"git.aiterp.net/rpdata/api/internal/store"
+	"git.aiterp.net/rpdata/api/models"
+	"github.com/globalsign/mgo"
+)
+
+var collection *mgo.Collection
+
+func find(query interface{}) (models.Comment, error) {
+	comment := models.Comment{}
+	err := collection.Find(query).One(&comment)
+
+	return comment, err
+}
+
+func list(query interface{}, limit int) ([]models.Comment, error) {
+	allocSize := 32
+	if limit >= 0 {
+		allocSize = limit
+	} else {
+		limit = 0
+	}
+
+	comments := make([]models.Comment, 0, allocSize)
+	err := collection.Find(query).Sort("createdDate").Limit(limit).All(&comments)
+	if err != nil {
+		return nil, err
+	}
+
+	return comments, nil
+}
+
+func makeCommentID() string {
+	result := "SCC"
+	offset := 0
+	data := make([]byte, 48)
+
+	rand.Read(data)
+	for len(result) < 32 {
+		result += strconv.FormatUint(binary.LittleEndian.Uint64(data[offset:]), 36)
+		offset += 8
+
+		if offset >= 48 {
+			rand.Read(data)
+			offset = 0
+		}
+	}
+
+	return result[:32]
+}
+
+func init() {
+	store.HandleInit(func(db *mgo.Database) {
+		collection = db.C("story.comments")
+
+		collection.EnsureIndexKey("chapterId")
+		collection.EnsureIndexKey("author")
+		collection.EnsureIndexKey("createdDate")
+	})
+}

models/comments/edit.go

@@ -0,0 +1,44 @@
+package comments
+
+import (
+	"time"
+
+	"git.aiterp.net/rpdata/api/models"
+	"github.com/globalsign/mgo/bson"
+)
+
+// Edit edits a comment.
+func Edit(comment models.Comment, source, characterName, characterID, subject *string, fictionalDate *time.Time) (models.Comment, error) {
+	changes := make(bson.M, 6)
+
+	comment.EditedDate = time.Now()
+	changes["editedDate"] = comment.EditedDate
+
+	if source != nil {
+		comment.Source = *source
+		changes["source"] = *source
+	}
+	if characterName != nil {
+		comment.CharacterName = *characterName
+		changes["characterName"] = *characterName
+	}
+	if characterID != nil {
+		comment.CharacterID = *characterID
+		changes["characterId"] = *characterID
+	}
+	if subject != nil {
+		comment.Subject = *subject
+		changes["subject"] = *subject
+	}
+	if fictionalDate != nil {
+		comment.FictionalDate = *fictionalDate
+		changes["fictionalDate"] = *fictionalDate
+	}
+
+	err := collection.UpdateId(comment.ID, bson.M{"$set": changes})
+	if err != nil {
+		return models.Comment{}, err
+	}
+
+	return comment, nil
+}

models/comments/find.go

@@ -0,0 +1,11 @@
+package comments
+
+import (
+	"git.aiterp.net/rpdata/api/models"
+	"github.com/globalsign/mgo/bson"
+)
+
+// Find finds a comment by ID.
+func Find(id string) (models.Comment, error) {
+	return find(bson.M{"_id": id})
+}

models/comments/list.go

@@ -0,0 +1,11 @@
+package comments
+
+import (
+	"git.aiterp.net/rpdata/api/models"
+	"github.com/globalsign/mgo/bson"
+)
+
+// ListChapterID lists all comments by chapter-ID
+func ListChapterID(chapterID string, limit int) ([]models.Comment, error) {
+	return list(bson.M{"chapterId": chapterID}, limit)
+}

models/comments/remove.go

@@ -0,0 +1,17 @@
+package comments
+
+import (
+	"git.aiterp.net/rpdata/api/models"
+	"github.com/globalsign/mgo/bson"
+)
+
+// Remove removes one comment.
+func Remove(comment models.Comment) error {
+	return collection.RemoveId(comment.ID)
+}
+
+// RemoveChapter removes all comments for the given chapter.
+func RemoveChapter(chapter models.Chapter) error {
+	_, err := collection.RemoveAll(bson.M{"chapterId": chapter.ID})
+	return err
+}

models/file.go

@@ -14,3 +14,9 @@ type File struct {
 	Author   string    `bson:"author" json:"author"`
 	URL      string    `bson:"url,omitempty" json:"url,omitempty"`
 }
+
+// IsChangeObject is an interface implementation to identify it as a valid
+// ChangeObject in GQL.
+func (*File) IsChangeObject() {
+	panic("this method is a dummy, and so is its caller")
+}

models/log.go

@@ -14,3 +14,9 @@ type Log struct {
 	Open         bool      `bson:"open"`
 	CharacterIDs []string  `bson:"characterIds"`
 }
+
+// IsChangeObject is an interface implementation to identify it as a valid
+// ChangeObject in GQL.
+func (*Log) IsChangeObject() {
+	panic("this method is a dummy, and so is its caller")
+}

models/post.go

@@ -12,3 +12,9 @@ type Post struct {
 	Text     string    `bson:"text"`
 	Position int       `bson:"position"`
 }
+
+// IsChangeObject is an interface implementation to identify it as a valid
+// ChangeObject in GQL.
+func (*Post) IsChangeObject() {
+	panic("this method is a dummy, and so is its caller")
+}

models/story.go

@@ -16,3 +16,9 @@ type Story struct {
 	FictionalDate time.Time     `bson:"fictionalDate,omitempty"`
 	UpdatedDate   time.Time     `bson:"updatedDate"`
 }
+
+// IsChangeObject is an interface implementation to identify it as a valid
+// ChangeObject in GQL.
+func (*Story) IsChangeObject() {
+	panic("this method is a dummy, and so is its caller")
+}

models/tag.go

@@ -10,3 +10,9 @@ type Tag struct {
 func (tag *Tag) Equal(other Tag) bool {
 	return tag.Kind == other.Kind && tag.Name == other.Name
 }
+
+// IsChangeObject is an interface implementation to identify it as a valid
+// ChangeObject in GQL.
+func (*Tag) IsChangeObject() {
+	panic("this method is a dummy, and so is its caller")
+}