Frontend/backend project structure

+ Base implementation of a differential synchronization based on Neil
  Fraser article/talk

See https://www.youtube.com/watch?v=S2Hp_1jqpY8
This commit is contained in:
2020-04-27 22:43:42 +02:00
parent 40759f59d6
commit d9fb51394c
89 changed files with 2178 additions and 14 deletions

1
server/.env Normal file
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GUESSTIMATE_DATA_PATH=data/guesstimate.db

1
server/.env.dist Normal file
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GUESSTIMATE_DATA_PATH=data/guesstimate.db

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package main
import (
"forge.cadoles.com/wpetit/guesstimate/internal/config"
"forge.cadoles.com/wpetit/guesstimate/internal/storm"
"gitlab.com/wpetit/goweb/service"
"gitlab.com/wpetit/goweb/service/build"
)
func getServiceContainer(conf *config.Config) (*service.Container, error) {
// Initialize and configure service container
ctn := service.NewContainer()
ctn.Provide(build.ServiceName, build.ServiceProvider(ProjectVersion, GitRef, BuildDate))
// Create and expose config service provider
ctn.Provide(config.ServiceName, config.ServiceProvider(conf))
ctn.Provide(storm.ServiceName, storm.ServiceProvider(
storm.WithPath(conf.Data.Path),
))
return ctn, nil
}

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server/cmd/server/main.go Normal file
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package main
import (
"net/http"
"forge.cadoles.com/wpetit/guesstimate/internal/route"
"github.com/go-chi/chi"
"github.com/go-chi/chi/middleware"
"gitlab.com/wpetit/goweb/middleware/container"
"flag"
"fmt"
"log"
"os"
"forge.cadoles.com/wpetit/guesstimate/internal/config"
"github.com/pkg/errors"
)
//nolint: gochecknoglobals
var (
configFile = ""
workdir = ""
dumpConfig = false
version = false
)
// nolint: gochecknoglobals
var (
GitRef = "unknown"
ProjectVersion = "unknown"
BuildDate = "unknown"
)
//nolint: gochecknoinits
func init() {
flag.StringVar(&configFile, "config", configFile, "configuration file")
flag.StringVar(&workdir, "workdir", workdir, "working directory")
flag.BoolVar(&dumpConfig, "dump-config", dumpConfig, "dump configuration and exit")
flag.BoolVar(&version, "version", version, "show version and exit")
}
func main() {
flag.Parse()
if version {
fmt.Printf("%s (%s) - %s\n", ProjectVersion, GitRef, BuildDate)
os.Exit(0)
}
// Switch to new working directory if defined
if workdir != "" {
if err := os.Chdir(workdir); err != nil {
log.Fatalf("%+v", errors.Wrapf(err, "could not change working directory to '%s'", workdir))
}
}
// Load configuration file if defined, use default configuration otherwise
var conf *config.Config
var err error
if configFile != "" {
conf, err = config.NewFromFile(configFile)
if err != nil {
log.Fatalf("%+v", errors.Wrapf(err, "could not load config file '%s'", configFile))
}
} else {
if dumpConfig {
conf = config.NewDumpDefault()
} else {
conf = config.NewDefault()
}
}
// Dump configuration if asked
if dumpConfig {
if err := config.Dump(conf, os.Stdout); err != nil {
log.Fatalf("%+v", errors.Wrap(err, "could not dump config"))
}
os.Exit(0)
}
if err := config.WithEnvironment(conf); err != nil {
log.Fatalf("%+v", errors.Wrap(err, "could not override config with environment"))
}
// Create service container
ctn, err := getServiceContainer(conf)
if err != nil {
log.Fatalf("%+v", errors.Wrap(err, "could not create service container"))
}
r := chi.NewRouter()
// Define base middlewares
r.Use(middleware.Logger)
r.Use(middleware.Recoverer)
// Expose service container on router
r.Use(container.ServiceContainer(ctn))
// Define routes
if err := route.Mount(r, conf); err != nil {
log.Fatalf("%+v", errors.Wrap(err, "could not mount http routes"))
}
log.Printf("listening on '%s'", conf.HTTP.Address)
if err := http.ListenAndServe(conf.HTTP.Address, r); err != nil {
log.Fatalf("%+v", errors.Wrapf(err, "could not listen on '%s'", conf.HTTP.Address))
}
}

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server/go.mod Normal file
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module forge.cadoles.com/wpetit/guesstimate
go 1.14
require (
github.com/asdine/storm/v3 v3.1.1
github.com/caarlos0/env/v6 v6.2.1
github.com/davecgh/go-spew v1.1.1
github.com/go-chi/chi v4.1.1+incompatible
github.com/gorilla/websocket v1.4.2
github.com/pkg/errors v0.9.1
gitlab.com/wpetit/goweb v0.0.0-20200418152305-76dea96a46ce
golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e // indirect
gopkg.in/evanphx/json-patch.v4 v4.5.0
gopkg.in/yaml.v2 v2.2.8
)
// replace gitlab.com/wpetit/goweb => ../goweb

268
server/go.sum Normal file
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cdr.dev/slog v1.3.0 h1:MYN1BChIaVEGxdS7I5cpdyMC0+WfJfK8BETAfzfLUGQ=
cdr.dev/slog v1.3.0/go.mod h1:C5OL99WyuOK8YHZdYY57dAPN1jK2WJlCdq2VP6xeQns=
cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
cloud.google.com/go v0.49.0/go.mod h1:hGvAdzcWNbyuxS3nWhD7H2cIJxjRRTRLQVB0bdputVY=
cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
github.com/DataDog/zstd v1.4.1 h1:3oxKN3wbHibqx897utPC2LTQU4J+IHWWJO+glkAkpFM=
github.com/DataDog/zstd v1.4.1/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo=
github.com/GeertJohan/go.incremental v1.0.0/go.mod h1:6fAjUhbVuX1KcMD3c8TEgVUqmo4seqhv0i0kdATSkM0=
github.com/GeertJohan/go.rice v1.0.0/go.mod h1:eH6gbSOAUv07dQuZVnBmoDP8mgsM1rtixis4Tib9if0=
github.com/Sereal/Sereal v0.0.0-20190618215532-0b8ac451a863 h1:BRrxwOZBolJN4gIwvZMJY1tzqBvQgpaZiQRuIDD40jM=
github.com/Sereal/Sereal v0.0.0-20190618215532-0b8ac451a863/go.mod h1:D0JMgToj/WdxCgd30Kc1UcA9E+WdZoJqeVOuYW7iTBM=
github.com/akavel/rsrc v0.8.0/go.mod h1:uLoCtb9J+EyAqh+26kdrTgmzRBFPGOolLWKpdxkKq+c=
github.com/alecthomas/assert v0.0.0-20170929043011-405dbfeb8e38/go.mod h1:r7bzyVFMNntcxPZXK3/+KdruV1H5KSlyVY0gc+NgInI=
github.com/alecthomas/chroma v0.7.0 h1:z+0HgTUmkpRDRz0SRSdMaqOLfJV4F+N1FPDZUZIDUzw=
github.com/alecthomas/chroma v0.7.0/go.mod h1:1U/PfCsTALWWYHDnsIQkxEBM0+6LLe0v8+RSVMOwxeY=
github.com/alecthomas/colour v0.0.0-20160524082231-60882d9e2721/go.mod h1:QO9JBoKquHd+jz9nshCh40fOfO+JzsoXy8qTHF68zU0=
github.com/alecthomas/kong v0.1.17-0.20190424132513-439c674f7ae0/go.mod h1:+inYUSluD+p4L8KdviBSgzcqEjUQOfC5fQDRFuc36lI=
github.com/alecthomas/kong v0.2.1-0.20190708041108-0548c6b1afae/go.mod h1:+inYUSluD+p4L8KdviBSgzcqEjUQOfC5fQDRFuc36lI=
github.com/alecthomas/kong-hcl v0.1.8-0.20190615233001-b21fea9723c8/go.mod h1:MRgZdU3vrFd05IQ89AxUZ0aYdF39BYoNFa324SodPCA=
github.com/alecthomas/repr v0.0.0-20180818092828-117648cd9897/go.mod h1:xTS7Pm1pD1mvyM075QCDSRqH6qRLXylzS24ZTpRiSzQ=
github.com/asdine/storm/v3 v3.1.1 h1:5ESJvmcNhQQOFcvpxkIHcZs7mp8Z6XGdBqEoAgf+11g=
github.com/asdine/storm/v3 v3.1.1/go.mod h1:LEpXwGt4pIqrE/XcTvCnZHT5MgZCV6Ub9q7yQzOFWr0=
github.com/caarlos0/env/v6 v6.2.1 h1:/bFpX1dg4TNioJjg7mrQaSrBoQvRfLUHNfXivdFbbEo=
github.com/caarlos0/env/v6 v6.2.1/go.mod h1:3LpmfcAYCG6gCiSgDLaFR5Km1FRpPwFvBbRcjHar6Sw=
github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
github.com/daaku/go.zipexe v1.0.0/go.mod h1:z8IiR6TsVLEYKwXAoE/I+8ys/sDkgTzSL0CLnGVd57E=
github.com/danwakefield/fnmatch v0.0.0-20160403171240-cbb64ac3d964 h1:y5HC9v93H5EPKqaS1UYVg1uYah5Xf51mBfIoWehClUQ=
github.com/danwakefield/fnmatch v0.0.0-20160403171240-cbb64ac3d964/go.mod h1:Xd9hchkHSWYkEqJwUGisez3G1QY8Ryz0sdWrLPMGjLk=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/dlclark/regexp2 v1.1.6/go.mod h1:2pZnwuY/m+8K6iRw6wQdMtk+rH5tNGR1i55kozfMjCc=
github.com/dlclark/regexp2 v1.2.0 h1:8sAhBGEM0dRWogWqWyQeIJnxjWO6oIjl8FKqREDsGfk=
github.com/dlclark/regexp2 v1.2.0/go.mod h1:2pZnwuY/m+8K6iRw6wQdMtk+rH5tNGR1i55kozfMjCc=
github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
github.com/fatih/color v1.7.0 h1:DkWD4oS2D8LGGgTQ6IvwJJXSL5Vp2ffcQg58nFV38Ys=
github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
github.com/go-chi/chi v4.0.2+incompatible/go.mod h1:eB3wogJHnLi3x/kFX2A+IbTBlXxmMeXJVKy9tTv1XzQ=
github.com/go-chi/chi v4.1.1+incompatible h1:MmTgB0R8Bt/jccxp+t6S/1VGIKdJw5J74CK/c9tTfA4=
github.com/go-chi/chi v4.1.1+incompatible/go.mod h1:eB3wogJHnLi3x/kFX2A+IbTBlXxmMeXJVKy9tTv1XzQ=
github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
github.com/go-playground/locales v0.12.1/go.mod h1:IUMDtCfWo/w/mtMfIE/IG2K+Ey3ygWanZIBtBW0W2TM=
github.com/go-playground/universal-translator v0.16.0/go.mod h1:1AnU7NaIRDWWzGEKwgtJRd2xk99HeFyHw3yid4rvQIY=
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
github.com/golang/groupcache v0.0.0-20191027212112-611e8accdfc9 h1:uHTyIjqVhYRhLbJ8nIiOJHkEZZ+5YoOsAbD3sk82NiE=
github.com/golang/groupcache v0.0.0-20191027212112-611e8accdfc9/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
github.com/golang/mock v1.2.0/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
github.com/golang/mock v1.3.1/go.mod h1:sBzyDLLjw3U8JLTeZvSv8jJB+tU5PVekmnlKIyFUx0Y=
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.2 h1:6nsPYzhq5kReh6QImI3k5qWzO4PEbvbIW2cwSfR/6xs=
github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/snappy v0.0.1 h1:Qgr9rKW7uDUkrbSmQeiDsGa8SjGyCOGtuasMWwvp2P4=
github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
github.com/google/go-cmp v0.3.2-0.20191216170541-340f1ebe299e/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/google/martian v2.1.0+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs=
github.com/google/pprof v0.0.0-20181206194817-3ea8567a2e57/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
github.com/google/pprof v0.0.0-20190515194954-54271f7e092f/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
github.com/google/uuid v1.1.1 h1:Gkbcsh/GbpXz7lPftLA3P6TYMwjCLYm83jiFQZF/3gY=
github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg=
github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk=
github.com/gorilla/csrf v1.6.0/go.mod h1:7tSf8kmjNYr7IWDCYhd3U8Ck34iQ/Yw5CJu7bAkHEGI=
github.com/gorilla/handlers v1.4.1/go.mod h1:Qkdc/uu4tH4g6mTK6auzZ766c4CA0Ng8+o/OAirnOIQ=
github.com/gorilla/mux v1.7.3/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
github.com/gorilla/securecookie v1.1.1/go.mod h1:ra0sb63/xPlUeL+yeDciTfxMRAA+MP+HVt/4epWDjd4=
github.com/gorilla/sessions v1.2.0/go.mod h1:dk2InVEVJ0sfLlnXv9EAgkf6ecYs/i80K/zI+bUmuGM=
github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1:6v2b51hI/fHJwM22ozAgKL4VKDeJcHhJFhtBdhmNjmU=
github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
github.com/leodido/go-urn v1.1.0/go.mod h1:+cyI34gQWZcE1eQU7NVgKkkzdXDQHr1dBMtdAPozLkw=
github.com/mattn/go-colorable v0.0.9/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaOChaDxuIBZU=
github.com/mattn/go-colorable v0.1.4 h1:snbPLB8fVfU9iwbbo30TPtbLRzwWu6aJS6Xh4eaaviA=
github.com/mattn/go-colorable v0.1.4/go.mod h1:U0ppj6V5qS13XJ6of8GYAs25YV2eR4EVcfRqFIhoBtE=
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github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
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github.com/valyala/fasttemplate v1.0.1/go.mod h1:UQGH1tvbgY+Nz5t2n7tXsz52dQxojPUpymEIMZ47gx8=
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golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20191206172530-e9b2fee46413 h1:ULYEB3JvPRE/IfO+9uO7vKV/xzVTO7XPAwm8xbf4w2g=
golang.org/x/crypto v0.0.0-20191206172530-e9b2fee46413/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
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golang.org/x/exp v0.0.0-20190829153037-c13cbed26979/go.mod h1:86+5VVa7VpoJ4kLfm080zCjGlMRFzhUhsZKEZO7MGek=
golang.org/x/exp v0.0.0-20191030013958-a1ab85dbe136/go.mod h1:JXzH8nQsPlswgeRAPE3MuO9GYsAcnJvJ4vnMwN/5qkY=
golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
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golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
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golang.org/x/lint v0.0.0-20190909230951-414d861bb4ac/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
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golang.org/x/net v0.0.0-20191105084925-a882066a44e0/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20191209160850-c0dbc17a3553/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e h1:3G+cUijn7XD+S4eJFddp53Pv7+slrESplyjG25HgL+k=
golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
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golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20191210023423-ac6580df4449/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200202164722-d101bd2416d5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
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golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
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golang.org/x/tools v0.0.0-20190816200558-6889da9d5479/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.0.0-20190911174233-4f2ddba30aff/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.0.0-20191012152004-8de300cfc20a/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
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golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
google.golang.org/api v0.7.0/go.mod h1:WtwebWUNSVBH/HAw79HIFXZNqEvBhG+Ra+ax0hx3E3M=
google.golang.org/api v0.8.0/go.mod h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEnKg=
google.golang.org/api v0.9.0/go.mod h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEnKg=
google.golang.org/api v0.14.0/go.mod h1:iLdEw5Ide6rF15KTC1Kkl0iskquN2gFfn9o9XIsbkAI=
google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
google.golang.org/appengine v1.5.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
google.golang.org/appengine v1.6.1/go.mod h1:i06prIuMbXzDqacNJfV5OdTW448YApPu5ww/cMBSeb0=
google.golang.org/appengine v1.6.5 h1:tycE03LOZYQNhDpS27tcQdAzLCVMaj7QT2SXxebnpCM=
google.golang.org/appengine v1.6.5/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
google.golang.org/genproto v0.0.0-20190418145605-e7d98fc518a7/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
google.golang.org/genproto v0.0.0-20190502173448-54afdca5d873/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
google.golang.org/genproto v0.0.0-20190801165951-fa694d86fc64/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
google.golang.org/genproto v0.0.0-20190911173649-1774047e7e51/go.mod h1:IbNlFCBrqXvoKpeg0TB2l7cyZUmoaFKYIwrEpbDKLA8=
google.golang.org/genproto v0.0.0-20191115194625-c23dd37a84c9/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc=
google.golang.org/genproto v0.0.0-20191216164720-4f79533eabd1/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc=
google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
gopkg.in/evanphx/json-patch.v4 v4.5.0 h1:MFA/3y/6L7wj4hG4wS4gsDw+ihxOSu6heF2zB2NUFtU=
gopkg.in/evanphx/json-patch.v4 v4.5.0/go.mod h1:p8EYWUEYMpynmqDbY58zCKCFZw8pRWMG4EsWvDvM72M=
gopkg.in/go-playground/assert.v1 v1.2.1/go.mod h1:9RXL0bg/zibRAgZUYszZSwO/z8Y/a8bDuhia5mkpMnE=
gopkg.in/go-playground/validator.v9 v9.29.1/go.mod h1:+c9/zcJMFNgbLvly1L1V+PpxWdVbfP1avr/N00E2vyQ=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=

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@ -0,0 +1,77 @@
package config
import (
"io"
"io/ioutil"
"github.com/caarlos0/env/v6"
"github.com/pkg/errors"
"gopkg.in/yaml.v2"
)
type Config struct {
HTTP HTTPConfig `yaml:"http"`
Data DataConfig `ymal:"data"`
}
type HTTPConfig struct {
Address string `yaml:"address" env:"GUESSTIMATE_HTTP_ADDRESS"`
}
type DataConfig struct {
Path string `yaml:"path" env:"GUESSTIMATE_DATA_PATH"`
}
// NewFromFile retrieves the configuration from the given file
func NewFromFile(filepath string) (*Config, error) {
config := NewDefault()
data, err := ioutil.ReadFile(filepath)
if err != nil {
return nil, errors.Wrapf(err, "could not read file '%s'", filepath)
}
if err := yaml.Unmarshal(data, config); err != nil {
return nil, errors.Wrapf(err, "could not unmarshal configuration")
}
return config, nil
}
func WithEnvironment(conf *Config) error {
if err := env.Parse(conf); err != nil {
return err
}
return nil
}
func NewDumpDefault() *Config {
config := NewDefault()
return config
}
func NewDefault() *Config {
return &Config{
HTTP: HTTPConfig{
Address: ":8081",
},
Data: DataConfig{
Path: "guesstimate.db",
},
}
}
func Dump(config *Config, w io.Writer) error {
data, err := yaml.Marshal(config)
if err != nil {
return errors.Wrap(err, "could not dump config")
}
if _, err := w.Write(data); err != nil {
return err
}
return nil
}

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@ -0,0 +1,9 @@
package config
import "gitlab.com/wpetit/goweb/service"
func ServiceProvider(config *Config) service.Provider {
return func(ctn *service.Container) (interface{}, error) {
return config, nil
}
}

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@ -0,0 +1,33 @@
package config
import (
"github.com/pkg/errors"
"gitlab.com/wpetit/goweb/service"
)
const ServiceName service.Name = "config"
// From retrieves the config service in the given container
func From(container *service.Container) (*Config, error) {
service, err := container.Service(ServiceName)
if err != nil {
return nil, errors.Wrapf(err, "error while retrieving '%s' service", ServiceName)
}
srv, ok := service.(*Config)
if !ok {
return nil, errors.Errorf("retrieved service is not a valid '%s' service", ServiceName)
}
return srv, nil
}
// Must retrieves the config service in the given container or panic otherwise
func Must(container *service.Container) *Config {
srv, err := From(container)
if err != nil {
panic(err)
}
return srv
}

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@ -0,0 +1,21 @@
package diffsync
type Backup struct {
localVersion Version
content []byte
}
func (b *Backup) LocalVersion() Version {
return b.localVersion
}
func (b *Backup) Content() []byte {
return b.content
}
func NewBackup(content []byte) *Backup {
return &Backup{
localVersion: 0,
content: content,
}
}

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@ -0,0 +1,31 @@
package diffsync
type EditsStack []*Edits
type Ops interface{}
type Edits struct {
ops Ops
localVersion Version
remoteVersion Version
}
func (e *Edits) Ops() Ops {
return e.ops
}
func (e *Edits) LocalVersion() Version {
return e.localVersion
}
func (e *Edits) RemoteVersion() Version {
return e.remoteVersion
}
type Differ interface {
Diff(new, old []byte) (Ops, error)
}
type Patcher interface {
Patch(content []byte, ops Ops) ([]byte, error)
}

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@ -0,0 +1,56 @@
package diffsync
import "sync"
type Version uint64
type void struct{}
type Document struct {
content []byte
patcher Patcher
differ Differ
peers map[*Peer]void
peersMutex sync.RWMutex
}
func (d *Document) NewPeer() *Peer {
d.peersMutex.Lock()
defer d.peersMutex.Unlock()
p := &Peer{
document: d,
shadow: NewShadow(Copy(d.content)),
editsStack: make(EditsStack, 0),
}
d.peers[p] = void{}
return p
}
func (d *Document) RemovePeer(p *Peer) {
d.peersMutex.Lock()
defer d.peersMutex.Unlock()
delete(d.peers, p)
p.document = nil
}
func (d *Document) Content() []byte {
return d.content
}
func NewDocument(content []byte, funcs ...OptionFunc) *Document {
opt := MergeOption(
DefaultOption(),
funcs...,
)
return &Document{
content: content,
patcher: opt.Patcher,
differ: opt.Differ,
peers: make(map[*Peer]void),
}
}

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@ -0,0 +1,9 @@
package diffsync
import "errors"
var (
ErrUnexpectedOpsFormat = errors.New("unexpected ops format")
ErrUnexpectedRemoteVersion = errors.New("unexpected remote version")
ErrInvalidState = errors.New("invalid state")
)

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@ -0,0 +1,42 @@
package json
import (
"forge.cadoles.com/wpetit/guesstimate/internal/diffsync"
"github.com/pkg/errors"
jsonpatch "gopkg.in/evanphx/json-patch.v4"
)
type Patcher struct{}
func (p *Patcher) Patch(content []byte, ops diffsync.Ops) ([]byte, error) {
patch, ok := ops.([]byte)
if !ok {
return nil, diffsync.ErrUnexpectedOpsFormat
}
modified, err := jsonpatch.MergePatch(content, patch)
if err != nil {
return nil, errors.Wrap(err, "could not apply patch")
}
return modified, nil
}
func NewPatcher() *Patcher {
return &Patcher{}
}
type Differ struct{}
func (d *Differ) Diff(new, old []byte) (diffsync.Ops, error) {
ops, err := jsonpatch.CreateMergePatch(old, new)
if err != nil {
return nil, errors.Wrap(err, "could not compute diff")
}
return ops, nil
}
func NewDiffer() *Differ {
return &Differ{}
}

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@ -0,0 +1,169 @@
package json
import (
"encoding/json"
"fmt"
"log"
"reflect"
"testing"
"forge.cadoles.com/wpetit/guesstimate/internal/diffsync"
"github.com/davecgh/go-spew/spew"
)
func TestJSONSync(t *testing.T) {
doc1 := diffsync.NewDocument(
[]byte("{}"),
WithJSONSync(),
)
doc2 := diffsync.NewDocument(
[]byte("{}"),
WithJSONSync(),
)
p1 := doc1.NewPeer()
p2 := doc2.NewPeer()
log.Printf("p1 shadow: %s", p1.Shadow().Content())
log.Printf("p2 shadow: %s", p2.Shadow().Content())
newContent1 := []byte(`{"hello":"world"}`)
log.Printf("updating doc1 with '%s'", newContent1)
stack1, err := p1.Update(newContent1)
if err != nil {
t.Error(err)
}
log.Printf("applying stack1 to doc2 '%s'", doc2.Content())
if err := p2.Apply(stack1); err != nil {
t.Error(err)
}
log.Printf("new doc2 content: '%s'", doc2.Content())
if g, e := doc2.Content(), doc1.Content(); !jsonEqual(e, g) {
t.Errorf("doc2.Content(): expected '%s', got '%s'", e, g)
}
}
type testStep struct {
Local *diffsync.Peer
Remote *diffsync.Peer
Update string
MatchLocal bool
MatchRemote bool
}
func TestBidirectionnalUpdate(t *testing.T) {
doc1 := diffsync.NewDocument([]byte(`{}`), WithJSONSync())
doc2 := diffsync.NewDocument([]byte(`{}`), WithJSONSync())
p1 := doc1.NewPeer()
p2 := doc2.NewPeer()
var cases = []testStep{
{
Local: p1,
Remote: p2,
Update: `{"hello":"world"}`,
MatchLocal: true,
MatchRemote: true,
},
{
Local: p2,
Remote: p1,
Update: `{"hello":"world","foo":"bar"}`,
MatchLocal: true,
MatchRemote: true,
},
{
Local: p1,
Remote: p2,
Update: `{"hello":1,"foo":"bar"}`,
MatchLocal: true,
MatchRemote: true,
},
{
Local: p1,
Remote: nil,
Update: `{"hello":1,"foo":"bar", "test":{"bar": "baz"}}`,
MatchLocal: true,
MatchRemote: false,
},
{
Local: p2,
Remote: p1,
Update: `{"hello":2,"foo":"bar", "test":{"bar": "baz","world":"hello"}}`,
MatchLocal: true,
MatchRemote: true,
},
}
for i, step := range cases {
func(step testStep, i int) {
t.Run(fmt.Sprintf("Step %d", i), func(t *testing.T) {
log.Printf("local document before update: '%s'", step.Local.Document().Content())
stack, err := step.Local.Update([]byte(step.Update))
if err != nil {
t.Error(err)
}
log.Printf("local document after update: '%s'", step.Local.Document().Content())
log.Printf("resulting stack: '%s'", spew.Sdump(stack))
if step.MatchLocal {
if e, g := step.Local.Document().Content(), []byte(step.Update); !jsonEqual(e, g) {
t.Errorf("local.Document().Content(): expected '%s', got '%s'", e, g)
}
}
if step.Remote != nil {
log.Printf("remote document before apply: '%s'", step.Remote.Document().Content())
if err := step.Remote.Apply(stack); err != nil {
t.Error(err)
}
log.Printf("remote document after apply: '%s'", step.Remote.Document().Content())
}
if step.MatchRemote {
if e, g := step.Remote.Document().Content(), []byte(step.Update); !jsonEqual(e, g) {
t.Errorf("remote.Document().Content(): expected '%s', got '%s'", e, g)
}
}
if step.MatchLocal && step.MatchRemote {
if e, g := step.Local.Document().Content(), step.Remote.Document().Content(); !jsonEqual(e, g) {
t.Errorf("local.Document().Content() should match remote.Document().Content() ! Got '%s' and '%s'", e, g)
}
}
})
}(step, i)
}
}
func jsonEqual(s1, s2 []byte) bool {
var (
o1 interface{}
o2 interface{}
)
var err error
err = json.Unmarshal(s1, &o1)
if err != nil {
panic(fmt.Errorf("Error mashalling []byte 1 :: %s", err.Error()))
}
err = json.Unmarshal(s2, &o2)
if err != nil {
panic(fmt.Errorf("Error mashalling []byte 2 :: %s", err.Error()))
}
return reflect.DeepEqual(o1, o2)
}

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@ -0,0 +1,10 @@
package json
import "forge.cadoles.com/wpetit/guesstimate/internal/diffsync"
func WithJSONSync() diffsync.OptionFunc {
return func(opt *diffsync.Option) {
opt.Differ = NewDiffer()
opt.Patcher = NewPatcher()
}
}

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@ -0,0 +1,34 @@
package diffsync
type Option struct {
Patcher Patcher
Differ Differ
}
func WithPatcher(p Patcher) OptionFunc {
return func(opt *Option) {
opt.Patcher = p
}
}
func WithDiffer(d Differ) OptionFunc {
return func(opt *Option) {
opt.Differ = d
}
}
type OptionFunc func(*Option)
func DefaultOption() *Option {
return MergeOption(
&Option{},
)
}
func MergeOption(opt *Option, funcs ...OptionFunc) *Option {
for _, fn := range funcs {
fn(opt)
}
return opt
}

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@ -0,0 +1,151 @@
package diffsync
import (
"log"
"sync"
"github.com/pkg/errors"
)
type Peer struct {
document *Document
shadow *Shadow
mutex sync.RWMutex
editsStack EditsStack
}
func (p *Peer) Document() *Document {
return p.document
}
func (p *Peer) Shadow() *Shadow {
return p.shadow
}
func (p *Peer) Update(content []byte) (EditsStack, error) {
p.mutex.Lock()
defer p.mutex.Unlock()
ops, err := p.document.differ.Diff(content, p.shadow.content)
if err != nil {
return nil, err
}
p.editsStack = append(p.editsStack, &Edits{
ops: ops,
localVersion: p.shadow.localVersion,
remoteVersion: p.shadow.remoteVersion,
})
p.shadow.localVersion++
p.shadow.content = content
p.document.content = content
newStack := make(EditsStack, len(p.editsStack))
copy(newStack, p.editsStack)
return newStack, nil
}
func (p *Peer) Apply(stack EditsStack) error {
p.mutex.Lock()
defer p.mutex.Unlock()
newStack := make(EditsStack, len(p.editsStack))
copy(newStack, p.editsStack)
for _, edits := range stack {
rollbacked, err := p.applyEdits(edits)
if err != nil {
return errors.Wrap(err, "could not apply edits")
}
if rollbacked {
newStack = EditsStack{}
}
// Iterate over local edits
for i, localEdits := range newStack {
if localEdits.LocalVersion() != edits.RemoteVersion() {
continue
}
log.Printf("removing edits %d", localEdits.LocalVersion())
// Remove local edit
copy(newStack[i:], newStack[i+1:])
newStack[len(newStack)-1] = nil
newStack = newStack[:len(newStack)-1]
}
}
p.editsStack = newStack
return nil
}
func (p *Peer) applyEdits(edits *Edits) (bool, error) {
rollbacked := false
shadow := p.Shadow()
var (
err error
newDocumentContent []byte
newShadowRemoteVersion Version
)
newShadowContent := shadow.content
newShadowLocalVersion := shadow.localVersion
log.Printf(
"shadow(l: %d, r: %d) edits(l: %d, r: %d)",
shadow.LocalVersion(), shadow.RemoteVersion(),
edits.LocalVersion(), edits.RemoteVersion(),
)
// Desync occurred, rollback to backup if possible
if shadow.LocalVersion() > edits.RemoteVersion() {
if shadow.Backup().LocalVersion() != edits.RemoteVersion() {
return false, ErrUnexpectedRemoteVersion
}
newShadowContent = shadow.backup.Content()
newShadowLocalVersion = shadow.backup.LocalVersion()
rollbacked = true
}
if edits.LocalVersion() < shadow.RemoteVersion() {
return rollbacked, nil
}
if edits.RemoteVersion() < newShadowLocalVersion {
return rollbacked, ErrInvalidState
}
newShadowContent, err = p.document.patcher.Patch(newShadowContent, edits.Ops())
if err != nil {
return false, errors.Wrap(err, "could not patch shadow content")
}
newDocumentContent, err = p.document.patcher.Patch(p.document.content, edits.Ops())
if err != nil {
return rollbacked, errors.Wrap(err, "could not patch document content")
}
newShadowRemoteVersion++
// Update shadow
shadow.content = newShadowContent
shadow.remoteVersion = newShadowRemoteVersion
shadow.localVersion = newShadowLocalVersion
// Update document
p.document.content = newDocumentContent
// Update backup
shadow.backup.content = newShadowContent
shadow.backup.localVersion = shadow.localVersion
return rollbacked, nil
}

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@ -0,0 +1,40 @@
package diffsync
type Shadow struct {
localVersion Version
remoteVersion Version
content []byte
backup *Backup
}
func NewShadow(content []byte) *Shadow {
return &Shadow{
localVersion: 0,
remoteVersion: 0,
content: content,
backup: NewBackup(Copy(content)),
}
}
func (s *Shadow) LocalVersion() Version {
return s.localVersion
}
func (s *Shadow) RemoteVersion() Version {
return s.remoteVersion
}
func (s *Shadow) Content() []byte {
return s.content
}
func (s *Shadow) Backup() *Backup {
return s.backup
}
func Copy(content []byte) []byte {
contentCopy := make([]byte, len(content))
copy(contentCopy, content)
return contentCopy
}

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@ -0,0 +1,14 @@
package diffsync
type Versioned struct {
localVersion Version
remoteVersion Version
}
func (v *Versioned) LocalVersion() Version {
return v.localVersion
}
func (v *Versioned) RemoteVersion() Version {
return v.remoteVersion
}

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@ -0,0 +1,12 @@
package route
import (
"forge.cadoles.com/wpetit/guesstimate/internal/config"
"github.com/go-chi/chi"
)
func Mount(r *chi.Mux, config *config.Config) error {
r.Get("/ws/{projectId}", handleProjectWebsocket)
return nil
}

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@ -0,0 +1,109 @@
package route
import (
"log"
"net/http"
"github.com/davecgh/go-spew/spew"
"github.com/gorilla/websocket"
"github.com/pkg/errors"
"gitlab.com/wpetit/goweb/logger"
)
var upgrader = websocket.Upgrader{} // nolint: gochecknoglobals
func handleProjectWebsocket(w http.ResponseWriter, r *http.Request) {
log.Println("websocket request")
c, err := upgrader.Upgrade(w, r, nil)
if err != nil {
panic(errors.Wrap(err, "could not upgrade connection"))
}
defer c.Close()
// ctn := container.Must(r.Context())
// ctx := r.Context()
// Loop over incoming websocket messages
for {
_, data, err := c.ReadMessage()
if err != nil {
cause := errors.Cause(err)
if websocket.IsCloseError(cause, 1001, 1005) { // Ignore "going away" and "no status" close errors
return
}
logger.Error(
r.Context(),
"could not read message",
logger.E(err),
)
break
}
spew.Dump(data)
// message := &game.Message{}
// if err := json.Unmarshal(data, message); err != nil {
// logger.Error(
// r.Context(),
// "could not decode message",
// logger.E(err),
// )
// break
// }
// switch {
// case message.Type == game.MessageTypeInit:
// payload := &game.InitPayload{}
// if err := json.Unmarshal(message.Payload, payload); err != nil {
// logger.Error(
// r.Context(),
// "could not decode payload",
// logger.E(err),
// )
// break
// }
// setGameID(payload.GameID)
// evt := game.NewEventPlayerConnected(payload.GameID, user.ID)
// bus.Publish(game.EventNamespace, evt)
// case message.Type == game.MessageTypeGameEvent:
// gameID, ok := getGameID()
// if !ok {
// logger.Error(
// r.Context(),
// "game id not received yet",
// )
// break
// }
// payload := &game.EventPayload{}
// if err := json.Unmarshal(message.Payload, payload); err != nil {
// logger.Error(
// r.Context(),
// "could not decode payload",
// logger.E(err),
// )
// break
// }
// evt := game.NewEventPlayerMessage(gameID, user.ID, payload.Data)
// bus.Publish(game.EventNamespace, evt)
// default:
// logger.Error(
// r.Context(),
// "unsupported message type",
// logger.F("messageType", message.Type),
// )
// }
}
}

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@ -0,0 +1,9 @@
package storm
import (
"github.com/asdine/storm/v3"
)
var (
ErrNotFound = storm.ErrNotFound
)

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@ -0,0 +1,51 @@
package storm
type Option struct {
Path string
Objects []interface{}
ReIndex bool
Init bool
}
type OptionFunc func(*Option)
func DefaultOption() *Option {
return MergeOption(
&Option{},
WithPath("data.db"),
WithInit(true),
WithReIndex(true),
)
}
func MergeOption(opt *Option, funcs ...OptionFunc) *Option {
for _, fn := range funcs {
fn(opt)
}
return opt
}
func WithPath(path string) OptionFunc {
return func(opt *Option) {
opt.Path = path
}
}
func WithReIndex(reindex bool) OptionFunc {
return func(opt *Option) {
opt.ReIndex = reindex
}
}
func WithInit(init bool) OptionFunc {
return func(opt *Option) {
opt.Init = init
}
}
func WithObjects(objects ...interface{}) OptionFunc {
return func(opt *Option) {
opt.Objects = objects
}
}

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@ -0,0 +1,48 @@
package storm
import (
"reflect"
"github.com/asdine/storm/v3"
"github.com/pkg/errors"
"gitlab.com/wpetit/goweb/service"
)
func ServiceProvider(funcs ...OptionFunc) service.Provider {
opt := MergeOption(
DefaultOption(),
funcs...,
)
db, err := storm.Open(opt.Path)
if err == nil && opt.Objects != nil {
err = migrate(db, opt.Objects, opt.Init, opt.ReIndex)
}
return func(ctn *service.Container) (interface{}, error) {
if err != nil {
return nil, err
}
return db, nil
}
}
func migrate(db *storm.DB, objects []interface{}, init, reindex bool) error {
for _, o := range objects {
if init {
if err := db.Init(o); err != nil {
return errors.Wrapf(err, "could not init object '%s'", reflect.TypeOf(o).String())
}
}
if reindex {
if err := db.ReIndex(o); err != nil {
return errors.Wrapf(err, "could not reindex object '%s'", reflect.TypeOf(o).String())
}
}
}
return nil
}

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@ -0,0 +1,34 @@
package storm
import (
"github.com/asdine/storm/v3"
"github.com/pkg/errors"
"gitlab.com/wpetit/goweb/service"
)
const ServiceName service.Name = "storm"
// From retrieves the storm service in the given container
func From(container *service.Container) (*storm.DB, error) {
service, err := container.Service(ServiceName)
if err != nil {
return nil, errors.Wrapf(err, "error while retrieving '%s' service", ServiceName)
}
srv, ok := service.(*storm.DB)
if !ok {
return nil, errors.Errorf("retrieved service is not a valid '%s' service", ServiceName)
}
return srv, nil
}
// Must retrieves the storm service in the given container or panic otherwise
func Must(container *service.Container) *storm.DB {
srv, err := From(container)
if err != nil {
panic(err)
}
return srv
}