mirror of
https://github.com/ClusterCockpit/cc-backend
synced 2024-12-27 13:49:05 +01:00
631 lines
21 KiB
Go
631 lines
21 KiB
Go
// Copyright (C) 2022 NHR@FAU, University Erlangen-Nuremberg.
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// All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package main
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import (
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"context"
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"crypto/tls"
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"encoding/json"
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"errors"
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"flag"
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"fmt"
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"io"
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"net"
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"net/http"
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"os"
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"os/signal"
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"runtime"
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"runtime/debug"
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"strings"
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"sync"
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"syscall"
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"time"
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"github.com/99designs/gqlgen/graphql/handler"
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"github.com/99designs/gqlgen/graphql/playground"
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"github.com/ClusterCockpit/cc-backend/internal/api"
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"github.com/ClusterCockpit/cc-backend/internal/auth"
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"github.com/ClusterCockpit/cc-backend/internal/config"
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"github.com/ClusterCockpit/cc-backend/internal/graph"
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"github.com/ClusterCockpit/cc-backend/internal/graph/generated"
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"github.com/ClusterCockpit/cc-backend/internal/importer"
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"github.com/ClusterCockpit/cc-backend/internal/metricdata"
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"github.com/ClusterCockpit/cc-backend/internal/repository"
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"github.com/ClusterCockpit/cc-backend/internal/routerConfig"
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"github.com/ClusterCockpit/cc-backend/internal/runtimeEnv"
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"github.com/ClusterCockpit/cc-backend/internal/util"
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"github.com/ClusterCockpit/cc-backend/pkg/archive"
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"github.com/ClusterCockpit/cc-backend/pkg/log"
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"github.com/ClusterCockpit/cc-backend/pkg/schema"
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"github.com/ClusterCockpit/cc-backend/web"
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"github.com/go-co-op/gocron"
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"github.com/google/gops/agent"
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"github.com/gorilla/handlers"
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"github.com/gorilla/mux"
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httpSwagger "github.com/swaggo/http-swagger"
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_ "github.com/go-sql-driver/mysql"
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_ "github.com/mattn/go-sqlite3"
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)
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const logoString = `
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____ _ _ ____ _ _ _
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/ ___| |_ _ ___| |_ ___ _ __ / ___|___ ___| | ___ __ (_) |_
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| | | | | | / __| __/ _ \ '__| | / _ \ / __| |/ / '_ \| | __|
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| |___| | |_| \__ \ || __/ | | |__| (_) | (__| <| |_) | | |_
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\____|_|\__,_|___/\__\___|_| \____\___/ \___|_|\_\ .__/|_|\__|
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`
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const envString = `
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# Base64 encoded Ed25519 keys (DO NOT USE THESE TWO IN PRODUCTION!)
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# You can generate your own keypair using the gen-keypair tool
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JWT_PUBLIC_KEY="kzfYrYy+TzpanWZHJ5qSdMj5uKUWgq74BWhQG6copP0="
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JWT_PRIVATE_KEY="dtPC/6dWJFKZK7KZ78CvWuynylOmjBFyMsUWArwmodOTN9itjL5POlqdZkcnmpJ0yPm4pRaCrvgFaFAbpyik/Q=="
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# Some random bytes used as secret for cookie-based sessions (DO NOT USE THIS ONE IN PRODUCTION)
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SESSION_KEY="67d829bf61dc5f87a73fd814e2c9f629"
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`
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const configString = `
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{
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"addr": "127.0.0.1:8080",
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"archive": {
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"kind": "file",
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"path": "./var/job-archive"
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},
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"clusters": [
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{
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"name": "name",
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"metricDataRepository": {
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"kind": "cc-metric-store",
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"url": "http://localhost:8082",
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"token": ""
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},
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"filterRanges": {
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"numNodes": {
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"from": 1,
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"to": 64
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},
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"duration": {
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"from": 0,
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"to": 86400
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},
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"startTime": {
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"from": "2023-01-01T00:00:00Z",
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"to": null
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}
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}
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}
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]
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}
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`
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var (
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date string
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commit string
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version string
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)
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func initEnv() {
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if util.CheckFileExists("var") {
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fmt.Print("Directory ./var already exists. Exiting!\n")
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os.Exit(0)
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}
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if err := os.WriteFile("config.json", []byte(configString), 0666); err != nil {
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log.Fatalf("Writing config.json failed: %s", err.Error())
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}
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if err := os.WriteFile(".env", []byte(envString), 0666); err != nil {
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log.Fatalf("Writing .env failed: %s", err.Error())
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}
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if err := os.Mkdir("var", 0777); err != nil {
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log.Fatalf("Mkdir var failed: %s", err.Error())
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}
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err := repository.MigrateDB("sqlite3", "./var/job.db")
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if err != nil {
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log.Fatalf("Initialize job.db failed: %s", err.Error())
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}
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}
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func main() {
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var flagReinitDB, flagInit, flagServer, flagSyncLDAP, flagGops, flagMigrateDB, flagDev, flagVersion, flagLogDateTime bool
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var flagNewUser, flagDelUser, flagGenJWT, flagConfigFile, flagImportJob, flagLogLevel string
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flag.BoolVar(&flagInit, "init", false, "Setup var directory, initialize swlite database file, config.json and .env")
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flag.BoolVar(&flagReinitDB, "init-db", false, "Go through job-archive and re-initialize the 'job', 'tag', and 'jobtag' tables (all running jobs will be lost!)")
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flag.BoolVar(&flagSyncLDAP, "sync-ldap", false, "Sync the 'user' table with ldap")
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flag.BoolVar(&flagServer, "server", false, "Start a server, continues listening on port after initialization and argument handling")
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flag.BoolVar(&flagGops, "gops", false, "Listen via github.com/google/gops/agent (for debugging)")
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flag.BoolVar(&flagDev, "dev", false, "Enable development components: GraphQL Playground and Swagger UI")
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flag.BoolVar(&flagVersion, "version", false, "Show version information and exit")
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flag.BoolVar(&flagMigrateDB, "migrate-db", false, "Migrate database to supported version and exit")
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flag.BoolVar(&flagLogDateTime, "logdate", false, "Set this flag to add date and time to log messages")
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flag.StringVar(&flagConfigFile, "config", "./config.json", "Specify alternative path to `config.json`")
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flag.StringVar(&flagNewUser, "add-user", "", "Add a new user. Argument format: `<username>:[admin,support,manager,api,user]:<password>`")
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flag.StringVar(&flagDelUser, "del-user", "", "Remove user by `username`")
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flag.StringVar(&flagGenJWT, "jwt", "", "Generate and print a JWT for the user specified by its `username`")
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flag.StringVar(&flagImportJob, "import-job", "", "Import a job. Argument format: `<path-to-meta.json>:<path-to-data.json>,...`")
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flag.StringVar(&flagLogLevel, "loglevel", "warn", "Sets the logging level: `[debug,info,warn (default),err,fatal,crit]`")
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flag.Parse()
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if flagVersion {
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fmt.Print(logoString)
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fmt.Printf("Version:\t%s\n", version)
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fmt.Printf("Git hash:\t%s\n", commit)
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fmt.Printf("Build time:\t%s\n", date)
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fmt.Printf("SQL db version:\t%d\n", repository.Version)
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fmt.Printf("Job archive version:\t%d\n", archive.Version)
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os.Exit(0)
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}
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// Apply config flags for pkg/log
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log.Init(flagLogLevel, flagLogDateTime)
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if flagInit {
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initEnv()
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fmt.Print("Succesfully setup environment!\n")
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fmt.Print("Please review config.json and .env and adjust it to your needs.\n")
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fmt.Print("Add your job-archive at ./var/job-archive.\n")
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os.Exit(0)
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}
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// See https://github.com/google/gops (Runtime overhead is almost zero)
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if flagGops {
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if err := agent.Listen(agent.Options{}); err != nil {
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log.Fatalf("gops/agent.Listen failed: %s", err.Error())
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}
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}
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if err := runtimeEnv.LoadEnv("./.env"); err != nil && !os.IsNotExist(err) {
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log.Fatalf("parsing './.env' file failed: %s", err.Error())
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}
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// Initialize sub-modules and handle command line flags.
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// The order here is important!
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config.Init(flagConfigFile)
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// As a special case for `db`, allow using an environment variable instead of the value
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// stored in the config. This can be done for people having security concerns about storing
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// the password for their mysql database in config.json.
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if strings.HasPrefix(config.Keys.DB, "env:") {
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envvar := strings.TrimPrefix(config.Keys.DB, "env:")
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config.Keys.DB = os.Getenv(envvar)
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}
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if flagMigrateDB {
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err := repository.MigrateDB(config.Keys.DBDriver, config.Keys.DB)
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if err != nil {
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log.Fatal(err)
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}
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os.Exit(0)
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}
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repository.Connect(config.Keys.DBDriver, config.Keys.DB)
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db := repository.GetConnection()
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var authentication *auth.Authentication
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if !config.Keys.DisableAuthentication {
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var err error
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if authentication, err = auth.Init(); err != nil {
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log.Fatalf("auth initialization failed: %v", err)
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}
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if d, err := time.ParseDuration(config.Keys.SessionMaxAge); err != nil {
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authentication.SessionMaxAge = d
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}
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if flagNewUser != "" {
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parts := strings.SplitN(flagNewUser, ":", 3)
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if len(parts) != 3 || len(parts[0]) == 0 {
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log.Fatal("invalid argument format for user creation")
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}
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ur := repository.GetUserRepository()
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if err := ur.AddUser(&schema.User{
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Username: parts[0], Projects: make([]string, 0), Password: parts[2], Roles: strings.Split(parts[1], ","),
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}); err != nil {
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log.Fatalf("adding '%s' user authentication failed: %v", parts[0], err)
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}
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}
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if flagDelUser != "" {
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ur := repository.GetUserRepository()
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if err := ur.DelUser(flagDelUser); err != nil {
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log.Fatalf("deleting user failed: %v", err)
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}
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}
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if flagSyncLDAP {
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if authentication.LdapAuth == nil {
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log.Fatal("cannot sync: LDAP authentication is not configured")
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}
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if err := authentication.LdapAuth.Sync(); err != nil {
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log.Fatalf("LDAP sync failed: %v", err)
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}
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log.Info("LDAP sync successfull")
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}
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if flagGenJWT != "" {
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ur := repository.GetUserRepository()
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user, err := ur.GetUser(flagGenJWT)
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if err != nil {
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log.Fatalf("could not get user from JWT: %v", err)
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}
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if !user.HasRole(schema.RoleApi) {
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log.Warnf("user '%s' does not have the API role", user.Username)
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}
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jwt, err := authentication.JwtAuth.ProvideJWT(user)
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if err != nil {
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log.Fatalf("failed to provide JWT to user '%s': %v", user.Username, err)
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}
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fmt.Printf("MAIN > JWT for '%s': %s\n", user.Username, jwt)
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}
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} else if flagNewUser != "" || flagDelUser != "" {
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log.Fatal("arguments --add-user and --del-user can only be used if authentication is enabled")
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}
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if err := archive.Init(config.Keys.Archive, config.Keys.DisableArchive); err != nil {
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log.Fatalf("failed to initialize archive: %s", err.Error())
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}
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if err := metricdata.Init(config.Keys.DisableArchive); err != nil {
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log.Fatalf("failed to initialize metricdata repository: %s", err.Error())
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}
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if flagReinitDB {
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if err := importer.InitDB(); err != nil {
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log.Fatalf("failed to re-initialize repository DB: %s", err.Error())
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}
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}
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if flagImportJob != "" {
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if err := importer.HandleImportFlag(flagImportJob); err != nil {
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log.Fatalf("job import failed: %s", err.Error())
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}
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}
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if !flagServer {
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return
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}
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// Setup the http.Handler/Router used by the server
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jobRepo := repository.GetJobRepository()
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resolver := &graph.Resolver{DB: db.DB, Repo: jobRepo}
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graphQLEndpoint := handler.NewDefaultServer(generated.NewExecutableSchema(generated.Config{Resolvers: resolver}))
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if os.Getenv("DEBUG") != "1" {
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// Having this handler means that a error message is returned via GraphQL instead of the connection simply beeing closed.
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// The problem with this is that then, no more stacktrace is printed to stderr.
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graphQLEndpoint.SetRecoverFunc(func(ctx context.Context, err interface{}) error {
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switch e := err.(type) {
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case string:
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return fmt.Errorf("MAIN > Panic: %s", e)
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case error:
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return fmt.Errorf("MAIN > Panic caused by: %w", e)
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}
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return errors.New("MAIN > Internal server error (panic)")
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})
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}
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api := &api.RestApi{
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JobRepository: jobRepo,
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Resolver: resolver,
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MachineStateDir: config.Keys.MachineStateDir,
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Authentication: authentication,
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}
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r := mux.NewRouter()
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buildInfo := web.Build{Version: version, Hash: commit, Buildtime: date}
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r.HandleFunc("/login", func(rw http.ResponseWriter, r *http.Request) {
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rw.Header().Add("Content-Type", "text/html; charset=utf-8")
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web.RenderTemplate(rw, "login.tmpl", &web.Page{Title: "Login", Build: buildInfo})
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}).Methods(http.MethodGet)
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r.HandleFunc("/imprint", func(rw http.ResponseWriter, r *http.Request) {
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rw.Header().Add("Content-Type", "text/html; charset=utf-8")
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web.RenderTemplate(rw, "imprint.tmpl", &web.Page{Title: "Imprint", Build: buildInfo})
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})
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r.HandleFunc("/privacy", func(rw http.ResponseWriter, r *http.Request) {
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rw.Header().Add("Content-Type", "text/html; charset=utf-8")
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web.RenderTemplate(rw, "privacy.tmpl", &web.Page{Title: "Privacy", Build: buildInfo})
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})
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secured := r.PathPrefix("/").Subrouter()
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if !config.Keys.DisableAuthentication {
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r.Handle("/login", authentication.Login(
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// On success:
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http.RedirectHandler("/", http.StatusTemporaryRedirect),
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// On failure:
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func(rw http.ResponseWriter, r *http.Request, err error) {
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rw.Header().Add("Content-Type", "text/html; charset=utf-8")
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rw.WriteHeader(http.StatusUnauthorized)
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web.RenderTemplate(rw, "login.tmpl", &web.Page{
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Title: "Login failed - ClusterCockpit",
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MsgType: "alert-warning",
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Message: err.Error(),
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Build: buildInfo,
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})
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})).Methods(http.MethodPost)
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r.Handle("/jwt-login", authentication.Login(
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// On success:
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http.RedirectHandler("/", http.StatusTemporaryRedirect),
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// On failure:
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func(rw http.ResponseWriter, r *http.Request, err error) {
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rw.Header().Add("Content-Type", "text/html; charset=utf-8")
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rw.WriteHeader(http.StatusUnauthorized)
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web.RenderTemplate(rw, "login.tmpl", &web.Page{
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Title: "Login failed - ClusterCockpit",
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MsgType: "alert-warning",
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Message: err.Error(),
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Build: buildInfo,
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})
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}))
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r.Handle("/logout", authentication.Logout(
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http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
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rw.Header().Add("Content-Type", "text/html; charset=utf-8")
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rw.WriteHeader(http.StatusOK)
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web.RenderTemplate(rw, "login.tmpl", &web.Page{
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Title: "Bye - ClusterCockpit",
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MsgType: "alert-info",
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Message: "Logout successful",
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Build: buildInfo,
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})
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}))).Methods(http.MethodPost)
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secured.Use(func(next http.Handler) http.Handler {
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return authentication.Auth(
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// On success;
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next,
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// On failure:
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func(rw http.ResponseWriter, r *http.Request, err error) {
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rw.WriteHeader(http.StatusUnauthorized)
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web.RenderTemplate(rw, "login.tmpl", &web.Page{
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Title: "Authentication failed - ClusterCockpit",
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MsgType: "alert-danger",
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Message: err.Error(),
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Build: buildInfo,
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})
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})
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})
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}
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if flagDev {
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r.Handle("/playground", playground.Handler("GraphQL playground", "/query"))
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r.PathPrefix("/swagger/").Handler(httpSwagger.Handler(
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httpSwagger.URL("http://" + config.Keys.Addr + "/swagger/doc.json"))).Methods(http.MethodGet)
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}
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secured.Handle("/query", graphQLEndpoint)
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// Send a searchId and then reply with a redirect to a user, or directly send query to job table for jobid and project.
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secured.HandleFunc("/search", func(rw http.ResponseWriter, r *http.Request) {
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routerConfig.HandleSearchBar(rw, r, buildInfo)
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})
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// Mount all /monitoring/... and /api/... routes.
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routerConfig.SetupRoutes(secured, buildInfo)
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api.MountRoutes(secured)
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if config.Keys.EmbedStaticFiles {
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if i, err := os.Stat("./var/img"); err == nil {
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if i.IsDir() {
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log.Info("Use local directory for static images")
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r.PathPrefix("/img/").Handler(http.StripPrefix("/img/", http.FileServer(http.Dir("./var/img"))))
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}
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}
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r.PathPrefix("/").Handler(web.ServeFiles())
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} else {
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r.PathPrefix("/").Handler(http.FileServer(http.Dir(config.Keys.StaticFiles)))
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}
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r.Use(handlers.CompressHandler)
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r.Use(handlers.RecoveryHandler(handlers.PrintRecoveryStack(true)))
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r.Use(handlers.CORS(
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handlers.AllowCredentials(),
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handlers.AllowedHeaders([]string{"X-Requested-With", "Content-Type", "Authorization", "Origin"}),
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handlers.AllowedMethods([]string{"GET", "POST", "HEAD", "OPTIONS"}),
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handlers.AllowedOrigins([]string{"*"})))
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handler := handlers.CustomLoggingHandler(io.Discard, r, func(_ io.Writer, params handlers.LogFormatterParams) {
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if strings.HasPrefix(params.Request.RequestURI, "/api/") {
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log.Debugf("%s %s (%d, %.02fkb, %dms)",
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params.Request.Method, params.URL.RequestURI(),
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params.StatusCode, float32(params.Size)/1024,
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time.Since(params.TimeStamp).Milliseconds())
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} else {
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log.Debugf("%s %s (%d, %.02fkb, %dms)",
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params.Request.Method, params.URL.RequestURI(),
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params.StatusCode, float32(params.Size)/1024,
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time.Since(params.TimeStamp).Milliseconds())
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}
|
|
})
|
|
|
|
var wg sync.WaitGroup
|
|
server := http.Server{
|
|
ReadTimeout: 10 * time.Second,
|
|
WriteTimeout: 10 * time.Second,
|
|
Handler: handler,
|
|
Addr: config.Keys.Addr,
|
|
}
|
|
|
|
// Start http or https server
|
|
listener, err := net.Listen("tcp", config.Keys.Addr)
|
|
if err != nil {
|
|
log.Fatalf("starting http listener failed: %v", err)
|
|
}
|
|
|
|
if !strings.HasSuffix(config.Keys.Addr, ":80") && config.Keys.RedirectHttpTo != "" {
|
|
go func() {
|
|
http.ListenAndServe(":80", http.RedirectHandler(config.Keys.RedirectHttpTo, http.StatusMovedPermanently))
|
|
}()
|
|
}
|
|
|
|
if config.Keys.HttpsCertFile != "" && config.Keys.HttpsKeyFile != "" {
|
|
cert, err := tls.LoadX509KeyPair(config.Keys.HttpsCertFile, config.Keys.HttpsKeyFile)
|
|
if err != nil {
|
|
log.Fatalf("loading X509 keypair failed: %v", err)
|
|
}
|
|
listener = tls.NewListener(listener, &tls.Config{
|
|
Certificates: []tls.Certificate{cert},
|
|
CipherSuites: []uint16{
|
|
tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
|
|
tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
|
|
},
|
|
MinVersion: tls.VersionTLS12,
|
|
PreferServerCipherSuites: true,
|
|
})
|
|
fmt.Printf("HTTPS server listening at %s...", config.Keys.Addr)
|
|
} else {
|
|
fmt.Printf("HTTP server listening at %s...", config.Keys.Addr)
|
|
}
|
|
|
|
// Because this program will want to bind to a privileged port (like 80), the listener must
|
|
// be established first, then the user can be changed, and after that,
|
|
// the actual http server can be started.
|
|
if err = runtimeEnv.DropPrivileges(config.Keys.Group, config.Keys.User); err != nil {
|
|
log.Fatalf("error while preparing server start: %s", err.Error())
|
|
}
|
|
|
|
wg.Add(1)
|
|
go func() {
|
|
defer wg.Done()
|
|
if err = server.Serve(listener); err != nil && err != http.ErrServerClosed {
|
|
log.Fatalf("starting server failed: %v", err)
|
|
}
|
|
}()
|
|
|
|
wg.Add(1)
|
|
sigs := make(chan os.Signal, 1)
|
|
signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
|
|
go func() {
|
|
defer wg.Done()
|
|
<-sigs
|
|
runtimeEnv.SystemdNotifiy(false, "Shutting down ...")
|
|
|
|
// First shut down the server gracefully (waiting for all ongoing requests)
|
|
server.Shutdown(context.Background())
|
|
|
|
// Then, wait for any async archivings still pending...
|
|
api.JobRepository.WaitForArchiving()
|
|
}()
|
|
|
|
s := gocron.NewScheduler(time.Local)
|
|
|
|
if config.Keys.StopJobsExceedingWalltime > 0 {
|
|
log.Info("Register undead jobs service")
|
|
|
|
s.Every(1).Day().At("3:00").Do(func() {
|
|
err = jobRepo.StopJobsExceedingWalltimeBy(config.Keys.StopJobsExceedingWalltime)
|
|
if err != nil {
|
|
log.Warnf("Error while looking for jobs exceeding their walltime: %s", err.Error())
|
|
}
|
|
runtime.GC()
|
|
})
|
|
}
|
|
|
|
var cfg struct {
|
|
Compression int `json:"compression"`
|
|
Retention schema.Retention `json:"retention"`
|
|
}
|
|
|
|
cfg.Retention.IncludeDB = true
|
|
|
|
if err = json.Unmarshal(config.Keys.Archive, &cfg); err != nil {
|
|
log.Warn("Error while unmarshaling raw config json")
|
|
}
|
|
|
|
switch cfg.Retention.Policy {
|
|
case "delete":
|
|
log.Info("Register retention delete service")
|
|
|
|
s.Every(1).Day().At("4:00").Do(func() {
|
|
startTime := time.Now().Unix() - int64(cfg.Retention.Age*24*3600)
|
|
jobs, err := jobRepo.FindJobsBetween(0, startTime)
|
|
if err != nil {
|
|
log.Warnf("Error while looking for retention jobs: %s", err.Error())
|
|
}
|
|
archive.GetHandle().CleanUp(jobs)
|
|
|
|
if cfg.Retention.IncludeDB {
|
|
cnt, err := jobRepo.DeleteJobsBefore(startTime)
|
|
if err != nil {
|
|
log.Errorf("Error while deleting retention jobs from db: %s", err.Error())
|
|
} else {
|
|
log.Infof("Retention: Removed %d jobs from db", cnt)
|
|
}
|
|
if err = jobRepo.Optimize(); err != nil {
|
|
log.Errorf("Error occured in db optimization: %s", err.Error())
|
|
}
|
|
}
|
|
})
|
|
case "move":
|
|
log.Info("Register retention move service")
|
|
|
|
s.Every(1).Day().At("4:00").Do(func() {
|
|
startTime := time.Now().Unix() - int64(cfg.Retention.Age*24*3600)
|
|
jobs, err := jobRepo.FindJobsBetween(0, startTime)
|
|
if err != nil {
|
|
log.Warnf("Error while looking for retention jobs: %s", err.Error())
|
|
}
|
|
archive.GetHandle().Move(jobs, cfg.Retention.Location)
|
|
|
|
if cfg.Retention.IncludeDB {
|
|
cnt, err := jobRepo.DeleteJobsBefore(startTime)
|
|
if err != nil {
|
|
log.Errorf("Error while deleting retention jobs from db: %v", err)
|
|
} else {
|
|
log.Infof("Retention: Removed %d jobs from db", cnt)
|
|
}
|
|
if err = jobRepo.Optimize(); err != nil {
|
|
log.Errorf("Error occured in db optimization: %v", err)
|
|
}
|
|
}
|
|
})
|
|
}
|
|
|
|
if cfg.Compression > 0 {
|
|
log.Info("Register compression service")
|
|
|
|
s.Every(1).Day().At("5:00").Do(func() {
|
|
var jobs []*schema.Job
|
|
|
|
ar := archive.GetHandle()
|
|
startTime := time.Now().Unix() - int64(cfg.Compression*24*3600)
|
|
lastTime := ar.CompressLast(startTime)
|
|
if startTime == lastTime {
|
|
log.Info("Compression Service - Complete archive run")
|
|
jobs, err = jobRepo.FindJobsBetween(0, startTime)
|
|
|
|
} else {
|
|
jobs, err = jobRepo.FindJobsBetween(lastTime, startTime)
|
|
}
|
|
|
|
if err != nil {
|
|
log.Warnf("Error while looking for compression jobs: %v", err)
|
|
}
|
|
ar.Compress(jobs)
|
|
})
|
|
}
|
|
|
|
s.StartAsync()
|
|
|
|
if os.Getenv("GOGC") == "" {
|
|
debug.SetGCPercent(25)
|
|
}
|
|
runtimeEnv.SystemdNotifiy(true, "running")
|
|
wg.Wait()
|
|
log.Print("Gracefull shutdown completed!")
|
|
}
|