Don't panic on file upload error

Bumps [github.com/valyala/fasthttp](https://github.com/valyala/fasthttp) from 1.1.0 to 1.2.0.
- [Release notes](https://github.com/valyala/fasthttp/releases)
- [Commits](https://github.com/valyala/fasthttp/compare/v1.1.0...v1.2.0)

Thanks bot

Signed-off-by: dependabot[bot] <support@dependabot.com>

.gitignore

@@ -1,3 +1,6 @@
 /.idea/
 .DS_Store
-/od-database-crawler
+/od-database-crawler
+*.log
+/queue/
+/crawled/

.travis.yml

@@ -0,0 +1,5 @@
+language: go
+
+go:
+  - "1.11.x"
+  - master

Dockerfile

@@ -0,0 +1,15 @@
+FROM golang:alpine as builder
+ADD . /go/src/github.com/terorie/od-database-crawler
+RUN apk add git \
+ && go get -d -v github.com/terorie/od-database-crawler \
+ && CGO_ENABLED=0 go install -a \
+    -installsuffix cgo \
+    -ldflags="-s -w" \
+    github.com/terorie/od-database-crawler
+
+FROM scratch
+COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+COPY --from=builder /go/bin/od-database-crawler /bin/
+WORKDIR /oddb
+VOLUME [ "/oddb" ]
+CMD ["/bin/od-database-crawler", "server"]

README.md

@@ -1,7 +1,54 @@
 # od-database Go crawler 🚀
+[![Build Status](https://travis-ci.org/terorie/od-database-crawler.svg?branch=master)](https://travis-ci.org/terorie/od-database-crawler)
 > by terorie 2018 :P
 
  * Crawler for [__OD-Database__](https://github.com/simon987/od-database)
  * Crawls HTTP open directories (standard Web Server Listings)
  * Gets name, path, size and modification time of all files
  * Lightweight and fast: __over 9000 requests per second__ on a standard laptop
+
+https://od-db.the-eye.eu/
+
+## Usage
+
+### Deploys
+
+ 1. With Config File (if `config.yml` found in working dir)
+    - Download [default config](https://github.com/terorie/od-database-crawler/blob/master/config.yml)
+    - Set `server.url` and `server.token`
+    - Start with `./od-database-crawler server --config <file>`
+
+ 2. With Flags or env
+    - Override config file if it exists
+    - `--help` for list of flags
+    - Every flag is available as an environment variable:
+      `--server.crawl_stats` ➡️ `OD_SERVER_CRAWL_STATS`
+    - Start with `./od-database-crawler server <flags>`
+
+ 3. With Docker
+    ```bash
+    docker run \
+        -e OD_SERVER_URL=xxx \
+        -e OD_SERVER_TOKEN=xxx \
+        terorie/od-database-crawler
+    ```
+
+### Flag reference
+
+Here are the most important config flags. For more fine control, take a look at `/config.yml`.
+
+| Flag/Environment                                        | Description                                                  | Example                             |
+| ------------------------------------------------------- | ------------------------------------------------------------ | ----------------------------------- |
+| `server.url`<br />`OD_SERVER_URL`                       | OD-DB Server URL                                             | `https://od-db.mine.the-eye.eu/api` |
+| `server.token`<br />`OD_SERVER_TOKEN`                   | OD-DB Server Access Token                                    | _Ask Hexa **TM**_                   |
+| `server.recheck`<br />`OD_SERVER_RECHECK`               | Job Fetching Interval                                        | `3s`                                |
+| `output.crawl_stats`<br />`OD_OUTPUT_CRAWL_STATS`       | Crawl Stats Logging Interval (0 = disabled)                  | `500ms`                             |
+| `output.resource_stats`<br />`OD_OUTPUT_RESORUCE_STATS` | Resource Stats Logging Interval (0 = disabled)               | `8s`                                |
+| `output.log`<br />`OD_OUTPUT_LOG`                       | Log File (none = disabled)                                   | `crawler.log`                       |
+| `crawl.tasks`<br />`OD_CRAWL_TASKS`                     | Max number of sites to crawl concurrently                    | `500`                               |
+| `crawl.connections`<br />`OD_CRAWL_CONNECTIONS`         | HTTP connections per site                                    | `1`                                 |
+| `crawl.retries`<br />`OD_CRAWL_RETRIES`                 | How often to retry after a temporary failure (e.g. `HTTP 429` or timeouts) | `5`                                 |
+| `crawl.dial_timeout`<br />`OD_CRAWL_DIAL_TIMEOUT`       | TCP Connect timeout                                          | `5s`                                |
+| `crawl.timeout`<br />`OD_CRAWL_TIMEOUT`                 | HTTP request timeout                                         | `20s`                               |
+| `crawl.user-agent`<br />`OD_CRAWL_USER_AGENT`           | HTTP Crawler User-Agent                                      | `googlebot/1.2.3`                   |
+| `crawl.job_buffer`<br />`OD_CRAWL_JOB_BUFFER`           | Number of URLs to keep in memory/cache, per job. The rest is offloaded to disk. Decrease this value if the crawler uses too much RAM. (0 = Disable Cache, -1 = Only use Cache) | `5000`                              |

config.go

@@ -4,6 +4,7 @@ import (
 	"bufio"
 	"fmt"
 	"github.com/sirupsen/logrus"
+	"github.com/spf13/pflag"
 	"github.com/spf13/viper"
 	"io"
 	"os"
@@ -12,33 +13,46 @@ import (
 )
 
 var config struct {
-	ServerUrl  string
-	Token      string
-	ServerTimeout time.Duration
-	Recheck    time.Duration
-	ChunkSize  int64
-	Retries    int
-	Workers    int
-	UserAgent  string
-	Timeout    time.Duration
-	Tasks      int32
-	CrawlStats time.Duration
-	AllocStats time.Duration
-	Verbose    bool
-	PrintHTTP  bool
+	TrackerUrl     string
+	TrackerProject int
+	TrackerAlias   string
+	WsBucketScheme string
+	WsBucketHost   string
+	ServerTimeout  time.Duration
+	Recheck        time.Duration
+	ChunkSize      int64
+	Retries        int
+	Workers        int
+	UserAgent      string
+	Tasks          int32
+	Verbose        bool
+	PrintHTTP      bool
+	JobBufferSize  int
 }
 
+var onlineMode bool
+
 const (
-	ConfServerUrl  = "server.url"
-	ConfToken      = "server.token"
-	ConfServerTimeout = "server.timeout"
-	ConfRecheck    = "server.recheck"
-	ConfChunkSize  = "server.upload_chunk"
-	ConfTasks      = "crawl.tasks"
-	ConfRetries    = "crawl.retries"
-	ConfWorkers    = "crawl.connections"
-	ConfUserAgent  = "crawl.user-agent"
-	ConfTimeout    = "crawl.timeout"
+	ConfTrackerUrl          = "server.url"
+	ConfTrackerProject      = "server.project"
+	ConfTrackerAlias        = "server.alias"
+	ConfWsBucketScheme      = "server.ws_bucket_scheme"
+	ConfWsBucketHost        = "server.ws_bucket_host"
+	ConfServerTimeout       = "server.timeout"
+	ConfRecheck             = "server.recheck"
+	ConfCooldown            = "server.cooldown"
+	ConfChunkSize           = "server.upload_chunk"
+	ConfUploadRetries       = "server.upload_retries"
+	ConfUploadRetryInterval = "server.upload_retry_interval"
+
+	ConfTasks         = "crawl.tasks"
+	ConfRetries       = "crawl.retries"
+	ConfWorkers       = "crawl.connections"
+	ConfUserAgent     = "crawl.user-agent"
+	ConfDialTimeout   = "crawl.dial_timeout"
+	ConfTimeout       = "crawl.timeout"
+	ConfJobBufferSize = "crawl.job_buffer"
+
 	ConfCrawlStats = "output.crawl_stats"
 	ConfAllocStats = "output.resource_stats"
 	ConfVerbose    = "output.verbose"
@@ -47,40 +61,116 @@ const (
 )
 
 func prepareConfig() {
-	viper.SetDefault(ConfRetries, 5)
-	viper.SetDefault(ConfWorkers, 2)
-	viper.SetDefault(ConfTasks, 3)
-	viper.SetDefault(ConfUserAgent, "")
-	viper.SetDefault(ConfTimeout, 10 * time.Second)
-	viper.SetDefault(ConfCrawlStats, 3 * time.Second)
-	viper.SetDefault(ConfAllocStats, 0)
-	viper.SetDefault(ConfVerbose, false)
-	viper.SetDefault(ConfPrintHTTP, false)
-	viper.SetDefault(ConfLogFile, "")
-	viper.SetDefault(ConfRecheck, 3 * time.Second)
-	viper.SetDefault(ConfChunkSize, "1 MB")
+	pf := rootCmd.PersistentFlags()
+
+	pf.SortFlags = false
+	pf.StringVar(&configFile, "config", "", "Config file")
+	configFile = os.Getenv("OD_CONFIG")
+
+	pf.String(ConfTrackerUrl, "https://tt.the-eye.eu/api", "task_tracker api URL")
+
+	pf.String(ConfTrackerProject, "1", "task_tracker project id")
+
+	pf.String(ConfWsBucketScheme, "wss", "ws_bucket scheme")
+
+	pf.String(ConfWsBucketHost, "wsb.the-eye.eu", "ws_bucket host")
+
+	pf.String(ConfTrackerAlias, "changeme", "task_tracker worker alias")
+
+	pf.Duration(ConfServerTimeout, 60*time.Second, "OD-DB request timeout")
+
+	pf.Duration(ConfRecheck, 1*time.Second, "OD-DB: Poll interval for new jobs")
+
+	pf.Duration(ConfCooldown, 1*time.Minute, "OD-DB: Time to wait after a server-side error")
+
+	pf.String(ConfChunkSize, "1 MB", "OD-DB: Result upload chunk size")
+
+	pf.Uint(ConfUploadRetries, 10, "OD-DB: Max upload retries")
+
+	pf.Duration(ConfUploadRetryInterval, 30*time.Second, "OD-DB: Time to wait between upload retries")
+
+	pf.Uint(ConfTasks, 25, "Crawler: Max concurrent tasks")
+
+	pf.Uint(ConfWorkers, 1, "Crawler: Connections per server")
+
+	pf.Uint(ConfRetries, 5, "Crawler: Request retries")
+
+	pf.Duration(ConfDialTimeout, 10*time.Second, "Crawler: Handshake timeout")
+
+	pf.Duration(ConfTimeout, 30*time.Second, "Crawler: Request timeout")
+
+	pf.String(ConfUserAgent, "Mozilla/5.0 (X11; od-database-crawler) Gecko/20100101 Firefox/52.0", "Crawler: User-Agent")
+
+	pf.Int(ConfJobBufferSize, -1, "Crawler: Task queue cache size")
+
+	pf.Duration(ConfCrawlStats, 500*time.Second, "Log: Crawl stats interval")
+
+	pf.Duration(ConfAllocStats, 500*time.Second, "Log: Resource stats interval")
+
+	pf.Bool(ConfVerbose, false, "Log: Print every listed dir")
+
+	pf.Bool(ConfPrintHTTP, false, "Log: Print HTTP client errors")
+
+	pf.String(ConfLogFile, "crawler.log", "Log file")
+
+	// Bind all flags to Viper
+	pf.VisitAll(func(flag *pflag.Flag) {
+		s := flag.Name
+		s = strings.TrimLeft(s, "-")
+
+		if err := viper.BindPFlag(s, flag); err != nil {
+			panic(err)
+		}
+		var envKey string
+		envKey = strings.Replace(s, ".", "_", -1)
+		envKey = strings.ToUpper(envKey)
+		envKey = "OD_" + envKey
+		if err := viper.BindEnv(s, envKey); err != nil {
+			panic(err)
+		}
+	})
 }
 
 func readConfig() {
-	viper.AddConfigPath(".")
-	viper.SetConfigName("config")
-	err := viper.ReadInConfig()
-	if err != nil {
-		fmt.Fprintln(os.Stderr, err)
-		os.Exit(1)
+	// If config.yml in working dir, use it
+	if configFile == "" {
+		_, err := os.Stat("config.yml")
+		if err == nil {
+			configFile = "config.yml"
+		}
 	}
 
-	config.ServerUrl = viper.GetString(ConfServerUrl)
-	if config.ServerUrl == "" {
-		configMissing(ConfServerUrl)
-	}
-	config.ServerUrl = strings.TrimRight(config.ServerUrl, "/")
+	if configFile != "" {
+		confF, err := os.Open(configFile)
+		if err != nil {
+			fmt.Fprintln(os.Stderr, err)
+			os.Exit(1)
+		}
+		defer confF.Close()
 
-	config.Token = viper.GetString(ConfToken)
-	if config.Token == "" {
-		configMissing(ConfToken)
+		viper.SetConfigType("yml")
+		err = viper.ReadConfig(confF)
+		if err != nil {
+			fmt.Fprintln(os.Stderr, err)
+			os.Exit(1)
+		}
 	}
 
+	if onlineMode {
+		config.TrackerUrl = viper.GetString(ConfTrackerUrl)
+		if config.TrackerUrl == "" {
+			configMissing(ConfTrackerUrl)
+		}
+		config.TrackerUrl = strings.TrimRight(config.TrackerUrl, "/")
+	}
+	config.TrackerProject = viper.GetInt(ConfTrackerProject)
+
+	config.TrackerAlias = viper.GetString(ConfTrackerAlias)
+
+	config.WsBucketHost = viper.GetString(ConfWsBucketHost)
+
+	config.WsBucketScheme = viper.GetString(ConfWsBucketScheme)
+
 	config.ServerTimeout = viper.GetDuration(ConfServerTimeout)
 
 	config.Recheck = viper.GetDuration(ConfRecheck)
@@ -107,11 +197,11 @@ func readConfig() {
 
 	config.UserAgent = viper.GetString(ConfUserAgent)
 
-	config.Timeout = viper.GetDuration(ConfTimeout)
+	setDialTimeout(viper.GetDuration(ConfDialTimeout))
 
-	config.CrawlStats = viper.GetDuration(ConfCrawlStats)
+	setTimeout(viper.GetDuration(ConfTimeout))
 
-	config.AllocStats = viper.GetDuration(ConfAllocStats)
+	config.JobBufferSize = viper.GetInt(ConfJobBufferSize)
 
 	config.Verbose = viper.GetBool(ConfVerbose)
 	if config.Verbose {
@@ -119,9 +209,11 @@ func readConfig() {
 	}
 
 	if filePath := viper.GetString(ConfLogFile); filePath != "" {
-		f, err := os.OpenFile(filePath, os.O_CREATE | os.O_WRONLY | os.O_APPEND, 0644)
+		f, err := os.OpenFile(filePath, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0644)
 		bufWriter := bufio.NewWriter(f)
-		if err != nil { panic(err) }
+		if err != nil {
+			panic(err)
+		}
 		exitHooks.Add(func() {
 			bufWriter.Flush()
 			f.Close()

config.yml

@@ -1,10 +1,14 @@
 # OD-Database server settings
 server:
   # Connection URL
-  url: http://od-db.mine.terorie.com/api
-
-  # Server auth token
-  token:
+  url: https://tt.the-eye.eu/api
+  # OD-Database project id (for crawling)
+  project: 1
+  # Your worker alias
+  alias: changeme
+  # Websocket bucket host & scheme (ws/wss)
+  ws_bucket_host: https://wsb.the-eye.eu
+  ws_bucket_scheme: wss
 
   # Request timeout
   timeout: 60s
@@ -15,17 +19,20 @@ server:
   # between /task/get requests to the server.
   recheck: 1s
 
-  # Upload chunk size
-  # If the value is too high, the upload fails.
-  upload_chunk: 1 MB
+  # Time to wait after receiving an error
+  # from the server. Doesn't apply to uploads.
+  cooldown: 1s
+
+  upload_retries: 10
+  upload_retry_interval: 30s
 
 # Log output settings
 output:
   # Crawl statistics
-  crawl_stats: 1s
+  crawl_stats: 1m
 
   # CPU/RAM/Job queue stats
-  resource_stats: 10s
+  resource_stats: 1m
 
   # More output? (Every listed dir)
   verbose: false
@@ -40,21 +47,38 @@ output:
 # Crawler settings
 crawl:
   # Number of sites that can be processed at once
-  tasks: 100
+  tasks: 25
 
   # Number of connections per site
   # Please be careful with this setting!
   # The crawler fires fast and more than
   # ten connections can overwhelm a server.
-  connections: 10
+  connections: 1
 
   # How often to retry getting data
   # from the site before giving up
   retries: 5
 
+  # Time before discarding a failed connection attempt
+  dial_timeout: 10s
+
   # Time before discarding a network request
-  timeout: 10s
+  timeout: 30s
 
   # Crawler User-Agent
   # If empty, no User-Agent header is sent.
   user-agent: "Mozilla/5.0 (X11; od-database-crawler) Gecko/20100101 Firefox/52.0"
+
+  # Job buffer size (per task)
+  # Higher values cause less disk writes
+  # but require more memory.
+  #
+  # The job queue contains all URLs
+  # that should be crawled next.
+  # As it grows very large over time,
+  # it's kept mainly on disk.
+  # This sets how many jobs are kept
+  # in memory.
+  # A negative value will cause all jobs
+  # to be stored in memory. (Don't do this)
+  job_buffer: -1

crawl.go

@@ -8,6 +8,7 @@ import (
 	"github.com/valyala/fasthttp"
 	"golang.org/x/crypto/blake2b"
 	"golang.org/x/net/html"
+	"net"
 	"path"
 	"strconv"
 	"strings"
@@ -20,6 +21,17 @@ var client = fasthttp.Client {
 	},
 }
 
+func setDialTimeout(d time.Duration) {
+	client.Dial = func(addr string) (net.Conn, error) {
+		return fasthttp.DialTimeout(addr, d)
+	}
+}
+
+func setTimeout(d time.Duration) {
+	client.ReadTimeout = d
+	client.WriteTimeout = d / 2
+}
+
 func GetDir(j *Job, f *File) (links []fasturl.URL, err error) {
 	f.IsDir = true
 	f.Name = path.Base(j.Uri.Path)
@@ -33,7 +45,7 @@ func GetDir(j *Job, f *File) (links []fasturl.URL, err error) {
 	res := fasthttp.AcquireResponse()
 	defer fasthttp.ReleaseResponse(res)
 
-	err = client.DoTimeout(req, res, config.Timeout)
+	err = client.Do(req, res)
 	fasthttp.ReleaseRequest(req)
 
 	if err != nil {
@@ -46,10 +58,16 @@ func GetDir(j *Job, f *File) (links []fasturl.URL, err error) {
 	}
 
 	body := res.Body()
+	return ParseDir(body, &j.Uri)
+}
+
+func ParseDir(body []byte, baseUri *fasturl.URL) (links []fasturl.URL, err error) {
 	doc := html.NewTokenizer(bytes.NewReader(body))
 
 	var linkHref string
 	for {
+		err = nil
+
 		tokenType := doc.Next()
 		if tokenType == html.ErrorToken {
 			break
@@ -80,36 +98,34 @@ func GetDir(j *Job, f *File) (links []fasturl.URL, err error) {
 				linkHref = ""
 
 				if strings.LastIndexByte(href, '?') != -1 {
-					goto nextToken
+					continue
 				}
 
 				switch href {
 				case "", " ", ".", "..", "/":
-					goto nextToken
+					continue
 				}
 
 				if strings.Contains(href, "../") {
-					goto nextToken
+					continue
 				}
 
 				var link fasturl.URL
-				err = j.Uri.ParseRel(&link, href)
+				err = baseUri.ParseRel(&link, href)
 				if err != nil {
 					continue
 				}
 
-				if link.Scheme != j.Uri.Scheme ||
-					link.Host != j.Uri.Host ||
-					link.Path == j.Uri.Path ||
-					!strings.HasPrefix(link.Path, j.Uri.Path) {
+				if link.Scheme != baseUri.Scheme ||
+					link.Host != baseUri.Host ||
+					link.Path == baseUri.Path ||
+					!strings.HasPrefix(link.Path, baseUri.Path) {
 					continue
 				}
 
 				links = append(links, link)
 			}
 		}
-
-	nextToken:
 	}
 
 	return
@@ -132,7 +148,7 @@ func GetFile(u fasturl.URL, f *File) (err error) {
 	res.SkipBody = true
 	defer fasthttp.ReleaseResponse(res)
 
-	err = client.DoTimeout(req, res, config.Timeout)
+	err = client.Do(req, res)
 	fasthttp.ReleaseRequest(req)
 
 	if err != nil {

crawl_nginx_test.go

@@ -0,0 +1,117 @@
+package main
+
+import (
+	"github.com/terorie/od-database-crawler/fasturl"
+	"testing"
+)
+
+func TestParseDirNginx(t *testing.T) {
+	var u fasturl.URL
+	err := u.Parse("https://the-eye.eu/public/")
+	if err != nil {
+		t.Fatal("Failed to parse URL", err)
+	}
+
+	links, err := ParseDir([]byte(nginxListing), &u)
+	if err != nil {
+		t.Fatal("Failed to extract links", err)
+	}
+
+	if len(links) != len(nginxLinks) {
+		t.Fatalf("Expected %d links, got %d",
+			len(nginxLinks), len(links))
+	}
+
+	for i := 0; i < len(links); i++ {
+		gotLink := links[i].String()
+		expLink := nginxLinks[i]
+
+		if gotLink != expLink {
+			t.Errorf(`Expected "%s" got "%s"`,
+				expLink, gotLink)
+		}
+	}
+}
+
+var nginxLinks = []string {
+	"https://the-eye.eu/public/AppleArchive/",
+	"https://the-eye.eu/public/AudioBooks/",
+	"https://the-eye.eu/public/Books/",
+	"https://the-eye.eu/public/Comics/",
+	"https://the-eye.eu/public/Games/",
+	"https://the-eye.eu/public/Icons/",
+	"https://the-eye.eu/public/Images/",
+	"https://the-eye.eu/public/JFK_Files/",
+	"https://the-eye.eu/public/MSDN/",
+	"https://the-eye.eu/public/Music/",
+	"https://the-eye.eu/public/Operating%20Systems/",
+	"https://the-eye.eu/public/Posters/",
+	"https://the-eye.eu/public/Psychedelics/",
+	"https://the-eye.eu/public/Psychoactives/",
+	"https://the-eye.eu/public/Radio/",
+	"https://the-eye.eu/public/Random/",
+	"https://the-eye.eu/public/Site-Dumps/",
+	"https://the-eye.eu/public/Software/",
+	"https://the-eye.eu/public/Strategic%20Intelligence%20Network/",
+	"https://the-eye.eu/public/WorldTracker.org/",
+	"https://the-eye.eu/public/concen.org/",
+	"https://the-eye.eu/public/freenrg.info/",
+	"https://the-eye.eu/public/murdercube.com/",
+	"https://the-eye.eu/public/parazite/",
+	"https://the-eye.eu/public/ripreddit/",
+	"https://the-eye.eu/public/rom/",
+	"https://the-eye.eu/public/touhou/",
+	"https://the-eye.eu/public/vns/",
+	"https://the-eye.eu/public/xbins/",
+	"https://the-eye.eu/public/xbins.diodematrix/",
+	"https://the-eye.eu/public/Rclone_for_Scrubs.pdf",
+	"https://the-eye.eu/public/Wget_Linux_Guide.pdf",
+	"https://the-eye.eu/public/Wget_Windows_Guide.pdf",
+	"https://the-eye.eu/public/rclone_guide.pdf",
+	"https://the-eye.eu/public/wget-noobs-guide.pdf",
+	"https://the-eye.eu/public/xbox-scene_Aug2014.7z",
+}
+
+const nginxListing =
+`<html>
+<head><title>Index of /public/</title></head>
+<body bgcolor="white">
+<h1>Index of /public/</h1><hr><pre><a href="../">../</a>
+<a href="AppleArchive/">AppleArchive/</a>                                      03-Nov-2017 18:13       -
+<a href="AudioBooks/">AudioBooks/</a>                                        29-Sep-2018 19:47       -
+<a href="Books/">Books/</a>                                             27-Nov-2018 17:50       -
+<a href="Comics/">Comics/</a>                                            05-Nov-2018 21:37       -
+<a href="Games/">Games/</a>                                             28-Nov-2018 11:54       -
+<a href="Icons/">Icons/</a>                                             22-May-2018 07:47       -
+<a href="Images/">Images/</a>                                            21-Jan-2018 03:21       -
+<a href="JFK_Files/">JFK_Files/</a>                                         03-Nov-2017 17:03       -
+<a href="MSDN/">MSDN/</a>                                              03-Nov-2017 15:48       -
+<a href="Music/">Music/</a>                                             02-Mar-2018 15:47       -
+<a href="Operating%20Systems/">Operating Systems/</a>                                 25-Apr-2018 07:18       -
+<a href="Posters/">Posters/</a>                                           07-Jul-2018 01:12       -
+<a href="Psychedelics/">Psychedelics/</a>                                      11-Apr-2018 05:45       -
+<a href="Psychoactives/">Psychoactives/</a>                                     18-May-2018 02:58       -
+<a href="Radio/">Radio/</a>                                             09-Jun-2018 15:49       -
+<a href="Random/">Random/</a>                                            04-Dec-2018 12:33       -
+<a href="Site-Dumps/">Site-Dumps/</a>                                        15-Dec-2018 11:04       -
+<a href="Software/">Software/</a>                                          27-Nov-2017 00:22       -
+<a href="Strategic%20Intelligence%20Network/">Strategic Intelligence Network/</a>                    17-Nov-2017 16:35       -
+<a href="WorldTracker.org/">WorldTracker.org/</a>                                  12-Apr-2018 04:16       -
+<a href="concen.org/">concen.org/</a>                                        08-Oct-2018 14:08       -
+<a href="freenrg.info/">freenrg.info/</a>                                      19-Dec-2017 10:59       -
+<a href="murdercube.com/">murdercube.com/</a>                                    06-Dec-2017 10:45       -
+<a href="parazite/">parazite/</a>                                          20-Nov-2017 21:25       -
+<a href="ripreddit/">ripreddit/</a>                                         04-Aug-2018 14:30       -
+<a href="rom/">rom/</a>                                               28-Nov-2018 14:15       -
+<a href="touhou/">touhou/</a>                                            03-Nov-2017 11:07       -
+<a href="vns/">vns/</a>                                               03-Nov-2017 11:36       -
+<a href="xbins/">xbins/</a>                                             03-Nov-2017 17:23       -
+<a href="xbins.diodematrix/">xbins.diodematrix/</a>                                 21-Sep-2018 22:33       -
+<a href="Rclone_for_Scrubs.pdf">Rclone_for_Scrubs.pdf</a>                              04-Sep-2018 13:31    315K
+<a href="Wget_Linux_Guide.pdf">Wget_Linux_Guide.pdf</a>                               21-Dec-2017 20:28    168K
+<a href="Wget_Windows_Guide.pdf">Wget_Windows_Guide.pdf</a>                             25-Nov-2017 17:59    867K
+<a href="rclone_guide.pdf">rclone_guide.pdf</a>                                   03-Sep-2018 23:37    315K
+<a href="wget-noobs-guide.pdf">wget-noobs-guide.pdf</a>                               21-Dec-2017 20:29    168K
+<a href="xbox-scene_Aug2014.7z">xbox-scene_Aug2014.7z</a>                              26-Oct-2017 23:09      1G
+</pre><hr></body>
+</html>`

crawl_test.go

@@ -0,0 +1,59 @@
+package main
+
+import (
+	"bytes"
+	"github.com/PuerkitoBio/goquery"
+	"github.com/terorie/od-database-crawler/fasturl"
+	"net/url"
+	"strings"
+	"testing"
+)
+
+func BenchmarkParseDir(b *testing.B) {
+	for n := 0; n < b.N; n++ {
+		var u fasturl.URL
+		err := u.Parse("http://archive.ubuntu.com/ubuntu/indices/")
+		if err != nil {
+			b.Fatal("Failed to parse URL", err)
+		}
+
+		_, err = ParseDir([]byte(apache2Listing), &u)
+		if err != nil {
+			b.Fatal("Failed to extract links", err)
+		}
+	}
+}
+
+func BenchmarkParseDirReference(b *testing.B) {
+	for n := 0; n < b.N; n++ {
+		u, err := url.Parse("http://archive.ubuntu.com/ubuntu/indices/")
+		if err != nil {
+			b.Fatal("Failed to parse URL", err)
+		}
+
+		_, err = referenceParseDir([]byte(apache2Listing), u)
+		if err != nil {
+			b.Fatal("Failed to extract links", err)
+		}
+	}
+}
+
+func referenceParseDir(body []byte, baseUri *url.URL) (links []*url.URL, err error) {
+	doc, err := goquery.NewDocumentFromReader(bytes.NewReader(body))
+	if err != nil { return nil, err }
+
+	doc.Find("a[href]").Each(func(i int, s *goquery.Selection) {
+		href, _ := s.Attr("href")
+
+		sub, err := baseUri.Parse(href)
+		if err != nil { return } // continue
+
+		if !strings.HasPrefix(sub.String(), baseUri.String()) {
+			return // continue
+		}
+
+		links = append(links, sub)
+	})
+
+	return
+}

errors.go

@@ -3,6 +3,8 @@ package main
 import (
 	"errors"
 	"fmt"
+	"github.com/valyala/fasthttp"
+	"net"
 )
 
 var ErrRateLimit = errors.New("too many requests")
@@ -15,3 +17,29 @@ type HttpError struct {
 func (e HttpError) Error() string {
 	return fmt.Sprintf("http status %d", e.code)
 }
+
+func shouldRetry(err error) bool {
+	// HTTP errors
+	if httpErr, ok := err.(*HttpError); ok {
+		switch httpErr.code {
+		case fasthttp.StatusTooManyRequests:
+			return true
+		default:
+			// Don't retry HTTP error codes
+			return false
+		}
+	}
+
+	if dnsError, ok := err.(*net.DNSError); ok {
+		// Don't retry permanent DNS errors
+		return dnsError.IsTemporary
+	}
+
+	if netErr, ok := err.(*net.OpError); ok {
+		// Don't retry permanent network errors
+		return netErr.Temporary()
+	}
+
+	// Retry by default
+	return true
+}

help.go

@@ -0,0 +1,15 @@
+package main
+
+const helpText =
+`HTTP crawler for the OD-Database
+  DB      >> https://od-db.the-eye.eu <<
+  Crawler >> https://github.com/terorie/od-database-crawler <<
+  Server  >> https://github.com/simon987/od-database <<
+
+Quick start:
+ - get config file  (config.yml in working dir)
+ - get OD-DB server ("server.url": Database URL + /api)
+ - get access token ("server.token": e.g. c010b6dd-20...)
+ - ./od-database-crawler server
+
+Questions? Discord @terorie#2664 / Telegram @terorie`

jenkins/Jenkinsfile

@@ -0,0 +1,47 @@
+def remote = [:]
+remote.name = 'remote'
+remote.host = env.DEPLOY_HOST
+remote.user = env.DEPLOY_USER
+remote.identityFile = '/var/lib/jenkins/.ssh/id_rsa'
+remote.knownHosts = '/var/lib/jenkins/.ssh/known_hosts'
+remote.allowAnyHosts = true
+remote.retryCount = 3
+remote.retryWaitSec = 3
+logLevel = 'FINER'
+
+pipeline {
+    agent none
+    environment {
+        GOOS='linux'
+        CGO_ENABLED='0'
+        HOME='.'
+    }
+    stages {
+        stage('Build') {
+            agent {
+                docker {
+                    image 'golang:latest'
+                }
+            }
+            steps {
+                sh 'mkdir -p /go/src/github.com/terorie/od-database-crawler'
+                sh 'cp -r *.go fasturl ds jenkins/build.sh "/go/src/github.com/terorie/od-database-crawler"'
+                sh 'cd /go/src/github.com/terorie/od-database-crawler && go get ./...'
+                sh './jenkins/build.sh'
+                stash includes: 'dist/', name: 'dist'
+            }
+        }
+        stage('Deploy') {
+            agent none
+            steps {
+                node('master') {
+                    unstash 'dist'
+                    sshCommand remote: remote, command: "ls od-database-crawler/"
+                    sshPut remote: remote, from: 'dist/', into: 'od-database-crawler'
+                }
+            }
+        }
+    }
+}
+
+

jenkins/build.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+
+appname="od-database-crawler"
+outdir="dist/"
+tag="${BUILD_ID}_$(date +%Y-%m-%d)"
+
+rm -rf "./${outdir}"
+mkdir build 2> /dev/null
+
+name=${outdir}${appname}-${tag}-linux
+GOOS="linux" GOARCH="amd64" go build -ldflags="-s -w" -o ${name}
+gzip -f ${name}
+echo ${name}
+
+name=${outdir}${appname}-${tag}-mac
+GOOS="darwin" GOARCH="amd64" go build -ldflags="-s -w" -o ${name}
+gzip -f ${name}
+echo ${name}
+
+name=${outdir}${appname}-${tag}-freebsd
+GOOS="freebsd" GOARCH="amd64" go build -ldflags="-s -w" -o ${name}
+gzip -f ${name}
+echo ${name}

main.go

@@ -2,72 +2,103 @@ package main
 
 import (
 	"context"
+	"fmt"
 	"github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
 	"github.com/terorie/od-database-crawler/fasturl"
-	"github.com/urfave/cli"
 	"os"
+	"os/signal"
 	"strings"
 	"sync/atomic"
 	"time"
 )
 
-var app = cli.App {
-	Name:         "od-database-crawler",
-	Usage:        "OD-Database Go crawler",
-	Version:      "1.0.1",
-	BashComplete: cli.DefaultAppComplete,
-	Writer:       os.Stdout,
-	Action:       cmdBase,
-	Commands:     []cli.Command{
-		{
-			Name:      "crawl",
-			Usage:     "Crawl a list of URLs",
-			ArgsUsage: "<site>",
-			Action:    cmdCrawler,
-		},
-	},
-	After: func(i *cli.Context) error {
+var configFile string
+
+var rootCmd = cobra.Command {
+	Use: "od-database-crawler",
+	Version: "1.2.2",
+	Short: "OD-Database Go crawler",
+	Long: helpText,
+	PersistentPreRunE: preRun,
+	PersistentPostRun: func(cmd *cobra.Command, args []string) {
 		exitHooks.Execute()
-		return nil
 	},
 }
 
+var serverCmd = cobra.Command {
+	Use: "server",
+	Short: "Start crawl server",
+	Long: "Connect to the OD-Database and contribute to the database\n" +
+		"by crawling the web for open directories!",
+	Run: cmdBase,
+}
+
+var crawlCmd = cobra.Command {
+	Use: "crawl",
+	Short: "Crawl an URL",
+	Long: "Crawl the URL specified.\n" +
+		"Results will not be uploaded to the database,\n" +
+		"they're saved under crawled/0.json instead.\n" +
+		"Primarily used for testing and benchmarking.",
+	RunE: cmdCrawler,
+	Args: cobra.ExactArgs(1),
+}
+
 var exitHooks Hooks
 
 func init() {
+	rootCmd.AddCommand(&crawlCmd)
+	rootCmd.AddCommand(&serverCmd)
+
 	prepareConfig()
 }
 
-func main() {
-	err := os.MkdirAll("crawled", 0755)
-	if err != nil {
-		panic(err)
-	}
+func preRun(cmd *cobra.Command, args []string) error {
+	if err := os.MkdirAll("crawled", 0755);
+		err != nil { panic(err) }
 
-	readConfig()
-	app.Run(os.Args)
+	if err := os.MkdirAll("queue", 0755);
+		err != nil { panic(err) }
+
+	return nil
 }
 
-func cmdBase(_ *cli.Context) error {
-	// TODO Graceful shutdown
-	appCtx := context.Background()
-	forceCtx := context.Background()
+func main() {
+	err := rootCmd.Execute()
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+}
+
+func cmdBase(_ *cobra.Command, _ []string) {
+	onlineMode = true
+	readConfig()
+
+	appCtx, soft := context.WithCancel(context.Background())
+	forceCtx, hard := context.WithCancel(context.Background())
+	go hardShutdown(forceCtx)
+	go listenCtrlC(soft, hard)
 
 	inRemotes := make(chan *OD)
-	go Schedule(forceCtx, inRemotes)
+	go Schedule(appCtx, inRemotes)
 
 	ticker := time.NewTicker(config.Recheck)
 	defer ticker.Stop()
 	for {
 		select {
 		case <-appCtx.Done():
-			return nil
+			goto shutdown
 		case <-ticker.C:
 			t, err := FetchTask()
 			if err != nil {
 				logrus.WithError(err).
 					Error("Failed to get new task")
-				time.Sleep(30 * time.Second)
+				if !sleep(viper.GetDuration(ConfCooldown), appCtx) {
+					goto shutdown
+				}
 				continue
 			}
 			if t == nil {
@@ -83,33 +114,27 @@ func cmdBase(_ *cli.Context) error {
 			if urlErr, ok := err.(*fasturl.Error); ok && urlErr.Err == fasturl.ErrUnknownScheme {
 				// Not an error
 				err = nil
-
-				// Give back task
-				//err2 := CancelTask(t.WebsiteId)
-				//if err2 != nil {
-				//	logrus.Error(err2)
-				//}
-
+				// TODO FTP crawler
 				continue
 			} else if err != nil {
 				logrus.WithError(err).
 					Error("Failed to get new task")
-				time.Sleep(30 * time.Second)
+				time.Sleep(viper.GetDuration(ConfCooldown))
 				continue
 			}
 			ScheduleTask(inRemotes, t, &baseUri)
 		}
 	}
 
-	return nil
+shutdown:
+	globalWait.Wait()
 }
 
-func cmdCrawler(clic *cli.Context) error {
-	if clic.NArg() != 1 {
-		cli.ShowCommandHelpAndExit(clic, "crawl", 1)
-	}
+func cmdCrawler(_ *cobra.Command, args []string) error {
+	onlineMode = false
+	readConfig()
 
-	arg := clic.Args()[0]
+	arg := args[0]
 	// https://github.com/golang/go/issues/19779
 	if !strings.Contains(arg, "://") {
 		arg = "http://" + arg
@@ -141,3 +166,30 @@ func cmdCrawler(clic *cli.Context) error {
 
 	return nil
 }
+
+func listenCtrlC(soft, hard context.CancelFunc) {
+	c := make(chan os.Signal)
+	signal.Notify(c, os.Interrupt)
+
+	<-c
+	logrus.Info(">>> Shutting down crawler... <<<")
+	soft()
+
+	<-c
+	logrus.Warning(">>> Force shutdown! <<<")
+	hard()
+}
+
+func hardShutdown(c context.Context) {
+	<-c.Done()
+	os.Exit(1)
+}
+
+func sleep(d time.Duration, c context.Context) bool {
+	select {
+	case <-time.After(d):
+		return true
+	case <-c.Done():
+		return false
+	}
+}

model.go

@@ -7,23 +7,32 @@ import (
 	"time"
 )
 
+type ResultCode int
+
+const (
+	TR_OK   = ResultCode(iota)
+	TR_FAIL = 1
+	TR_SKIP = 2
+)
+
 type Task struct {
-	WebsiteId uint64 `json:"website_id"`
-	Url       string `json:"url"`
+	WebsiteId   uint64 `json:"website_id"`
+	Url         string `json:"url"`
+	UploadToken string `json:"upload_token"`
+	TaskId      int64
 }
 
 type TaskResult struct {
-	StatusCode    string    `json:"status_code"`
-	FileCount     uint64    `json:"file_count"`
-	ErrorCount    uint64    `json:"-"`
-	StartTime     time.Time `json:"-"`
-	StartTimeUnix int64     `json:"start_time"`
-	EndTimeUnix   int64     `json:"end_time"`
-	WebsiteId     uint64    `json:"website_id"`
+	ResultCode    ResultCode `json:"status_code"`
+	FileCount     uint64     `json:"file_count"`
+	ErrorCount    uint64     `json:"-"`
+	StartTime     time.Time  `json:"-"`
+	StartTimeUnix int64      `json:"start_time"`
+	EndTimeUnix   int64      `json:"end_time"`
+	WebsiteId     uint64     `json:"website_id"`
 }
 
 type Job struct {
-	OD        *OD
 	Uri       fasturl.URL
 	UriStr    string
 	Fails     int
@@ -52,8 +61,16 @@ func (o *OD) LoadOrStoreKey(k *redblackhash.Key) (exists bool) {
 	defer o.Scanned.Unlock()
 
 	exists = o.Scanned.Get(k)
-	if exists { return true }
+	if exists {
+		return true
+	}
 
 	o.Scanned.Put(k)
 	return false
 }
+
+type errorString string
+
+func (e errorString) Error() string {
+	return string(e)
+}

queue.go

@@ -0,0 +1,129 @@
+package main
+
+import (
+	"github.com/beeker1121/goque"
+	"os"
+	"sync"
+	"sync/atomic"
+)
+
+type BufferedQueue struct {
+	dataDir string
+	q       *goque.Queue
+	buf     []Job
+	m       sync.Mutex
+}
+
+func OpenQueue(dataDir string) (bq *BufferedQueue, err error) {
+	bq = new(BufferedQueue)
+	if config.JobBufferSize < 0 {
+		return
+	}
+	bq.dataDir = dataDir
+	bq.q, err = goque.OpenQueue(dataDir)
+	if err != nil { return nil, err }
+	return
+}
+
+func (q *BufferedQueue) Enqueue(job *Job) error {
+	atomic.AddInt64(&totalQueued, 1)
+	if q.directEnqueue(job) {
+		return nil
+	}
+
+	var gob JobGob
+	gob.ToGob(job)
+	_, err := q.q.EnqueueObject(gob)
+	return err
+}
+
+func (q *BufferedQueue) Dequeue() (job Job, err error) {
+	if q.directDequeue(&job) {
+		atomic.AddInt64(&totalQueued, -1)
+		return job, nil
+	}
+
+	if config.JobBufferSize < 0 {
+		err = goque.ErrEmpty
+		return
+	}
+
+	var item *goque.Item
+	item, err = q.q.Dequeue()
+	if err != nil { return }
+
+	atomic.AddInt64(&totalQueued, -1)
+
+	var gob JobGob
+	err = item.ToObject(&gob)
+	if err != nil { return }
+	gob.FromGob(&job)
+
+	return
+}
+
+func (q *BufferedQueue) directEnqueue(job *Job) bool {
+	q.m.Lock()
+	defer q.m.Unlock()
+
+	bs := config.JobBufferSize
+	if len(q.buf) < bs || bs < 0 {
+		q.buf = append(q.buf, *job)
+		return true
+	} else {
+		return false
+	}
+}
+
+func (q *BufferedQueue) directDequeue(job *Job) bool {
+	q.m.Lock()
+	defer q.m.Unlock()
+
+	if len(q.buf) > 0 {
+		*job = q.buf[0]
+		q.buf = q.buf[1:]
+		return true
+	} else {
+		return false
+	}
+}
+
+// Always returns nil (But implements io.Closer)
+func (q *BufferedQueue) Close() error {
+	if config.JobBufferSize < 0 {
+		return nil
+	}
+
+	// Close ignoring errors
+	q.q.Close()
+
+	// Delete files
+	if err := os.RemoveAll(q.dataDir);
+		err != nil { panic(err) }
+
+	return nil
+}
+
+type JobGob struct {
+	Uri string
+	Fails int
+	LastError string
+}
+
+func (g *JobGob) ToGob(j *Job) {
+	g.Uri = j.UriStr
+	g.Fails = j.Fails
+	if j.LastError != nil {
+		g.LastError = j.LastError.Error()
+	}
+}
+
+func (g *JobGob) FromGob(j *Job) {
+	if err := j.Uri.Parse(g.Uri);
+		err != nil { panic(err) }
+	j.UriStr = g.Uri
+	j.Fails = g.Fails
+	if g.LastError != "" {
+		j.LastError = errorString(g.LastError)
+	}
+}

scheduler.go

@@ -16,7 +16,7 @@ import (
 var activeTasksLock sync.Mutex
 var activeTasks = make(map[uint64]bool)
 var numActiveTasks int32
-var totalBuffered int64
+var totalQueued int64
 
 func Schedule(c context.Context, remotes <-chan *OD) {
 	go Stats(c)
@@ -28,8 +28,24 @@ func Schedule(c context.Context, remotes <-chan *OD) {
 		// Collect results
 		results := make(chan File)
 
+		remote.WCtx.OD = remote
+
+		// Get queue path
+		queuePath := path.Join("queue", fmt.Sprintf("%d", remote.Task.WebsiteId))
+
+		// Delete existing queue
+		if err := os.RemoveAll(queuePath); err != nil {
+			panic(err)
+		}
+
+		// Start new queue
+		var err error
+		remote.WCtx.Queue, err = OpenQueue(queuePath)
+		if err != nil {
+			panic(err)
+		}
+
 		// Spawn workers
-		remote.WCtx.in, remote.WCtx.out = makeJobBuffer(c)
 		for i := 0; i < config.Workers; i++ {
 			go remote.WCtx.Worker(results)
 		}
@@ -37,7 +53,6 @@ func Schedule(c context.Context, remotes <-chan *OD) {
 		// Enqueue initial job
 		atomic.AddInt32(&numActiveTasks, 1)
 		remote.WCtx.queueJob(Job{
-			OD:     remote,
 			Uri:    remote.BaseUri,
 			UriStr: remote.BaseUri.String(),
 			Fails:  0,
@@ -65,12 +80,12 @@ func ScheduleTask(remotes chan<- *OD, t *Task, u *fasturl.URL) {
 
 	globalWait.Add(1)
 	now := time.Now()
-	od := &OD {
-		Task: *t,
+	od := &OD{
+		Task:    *t,
 		BaseUri: *u,
-		Result: TaskResult {
-			WebsiteId: t.WebsiteId,
-			StartTime: now,
+		Result: TaskResult{
+			WebsiteId:     t.WebsiteId,
+			StartTime:     now,
 			StartTimeUnix: now.Unix(),
 		},
 	}
@@ -105,7 +120,7 @@ func (o *OD) Watch(results chan File) {
 	// Open crawl results file
 	f, err := os.OpenFile(
 		filePath,
-		os.O_CREATE | os.O_RDWR | os.O_TRUNC,
+		os.O_CREATE|os.O_RDWR|os.O_TRUNC,
 		0644,
 	)
 	if err != nil {
@@ -133,7 +148,7 @@ func (o *OD) Watch(results chan File) {
 	}
 
 	// Upload results
-	err = PushResult(&o.Result, f)
+	err = PushResult(&o.Task, f)
 	if err != nil {
 		logrus.WithError(err).
 			Error("Failed uploading crawl results")
@@ -148,30 +163,28 @@ func (o *OD) handleCollect(results chan File, f *os.File, collectErrC chan error
 
 	// Wait for all jobs on remote to finish
 	o.Wait.Wait()
-	close(o.WCtx.in)
+
+	// Close queue
+	if err := o.WCtx.Queue.Close(); err != nil {
+		panic(err)
+	}
 	atomic.AddInt32(&numActiveTasks, -1)
 
 	// Log finish
 
 	logrus.WithFields(logrus.Fields{
-		"id":  o.Task.WebsiteId,
-		"url": o.BaseUri.String(),
+		"id":       o.Task.WebsiteId,
+		"url":      o.BaseUri.String(),
 		"duration": time.Since(o.Result.StartTime),
 	}).Info("Crawler finished")
 
 	// Set status code
 	now := time.Now()
 	o.Result.EndTimeUnix = now.Unix()
-	fileCount := atomic.LoadUint64(&o.Result.FileCount)
-	if fileCount == 0 {
-		errorCount := atomic.LoadUint64(&o.Result.ErrorCount)
-		if errorCount == 0 {
-			o.Result.StatusCode = "empty"
-		} else {
-			o.Result.StatusCode = "directory listing failed"
-		}
+	if atomic.LoadUint64(&o.Result.ErrorCount) != 0 {
+		o.Result.ResultCode = TR_FAIL
 	} else {
-		o.Result.StatusCode = "success"
+		o.Result.ResultCode = TR_OK
 	}
 }
 
@@ -189,60 +202,18 @@ func (t *Task) collect(results chan File, f *os.File) error {
 		result.Path = fasturl.PathUnescape(result.Path)
 		result.Name = fasturl.PathUnescape(result.Name)
 		resJson, err := json.Marshal(result)
-		if err != nil { panic(err) }
+		if err != nil {
+			panic(err)
+		}
 		_, err = f.Write(resJson)
-		if err != nil { return err }
+		if err != nil {
+			return err
+		}
 		_, err = f.Write([]byte{'\n'})
-		if err != nil { return err }
+		if err != nil {
+			return err
+		}
 	}
 
 	return nil
 }
-
-func makeJobBuffer(c context.Context) (chan<- Job, <-chan Job) {
-	in  := make(chan Job)
-	out := make(chan Job)
-	go bufferJobs(c, in, out)
-	return in, out
-}
-
-func bufferJobs(c context.Context, in chan Job, out chan Job) {
-	defer close(out)
-	var inQueue []Job
-	outCh := func() chan Job {
-		if len(inQueue) == 0 {
-			return nil
-		}
-		return out
-	}
-	for len(inQueue) > 0 || in != nil {
-		if len(inQueue) == 0 {
-			select {
-			case v, ok := <-in:
-				if !ok {
-					in = nil
-				} else {
-					atomic.AddInt64(&totalBuffered, 1)
-					inQueue = append(inQueue, v)
-				}
-			case <-c.Done():
-				return
-			}
-		} else {
-			select {
-			case v, ok := <-in:
-				if !ok {
-					in = nil
-				} else {
-					atomic.AddInt64(&totalBuffered, 1)
-					inQueue = append(inQueue, v)
-				}
-			case outCh() <- inQueue[0]:
-				atomic.AddInt64(&totalBuffered, -1)
-				inQueue = inQueue[1:]
-			case <-c.Done():
-				return
-			}
-		}
-	}
-}

server.go

@@ -2,46 +2,125 @@ package main
 
 import (
 	"bytes"
+	"encoding/base64"
 	"encoding/json"
 	"fmt"
+	"github.com/fasthttp/websocket"
+	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
+	"golang.org/x/time/rate"
 	"io"
-	"mime/multipart"
+	"io/ioutil"
 	"net/http"
 	"net/url"
 	"os"
 	"strconv"
 )
 
-var serverClient = http.Client {
-	Timeout: config.ServerTimeout,
+var serverWorker *TrackerWorker
+
+var serverClient = http.Client{
+	Timeout:   config.ServerTimeout,
+	Transport: new(ServerTripper),
+}
+
+var serverUserAgent = "od-database-crawler/" + rootCmd.Version
+
+func getOrCreateWorker() {
+
+	if _, err := os.Stat("worker.json"); os.IsNotExist(err) {
+		req := CreateTrackerWorkerRequest{
+			Alias: config.TrackerAlias,
+		}
+		body, _ := json.Marshal(&req)
+		buf := bytes.NewBuffer(body)
+		resp, _ := serverClient.Post(config.TrackerUrl+"/worker/create", "application/json", buf)
+
+		workerResponse := CreateTrackerWorkerResponse{}
+		respBody, _ := ioutil.ReadAll(resp.Body)
+		_ = json.Unmarshal(respBody, &workerResponse)
+
+		workerJsonData, _ := json.Marshal(&workerResponse.Content.Worker)
+		fp, _ := os.OpenFile("worker.json", os.O_CREATE|os.O_TRUNC|os.O_WRONLY, 0600)
+		_, _ = fp.Write(workerJsonData)
+
+		//Request ASSIGN permission
+		serverWorker = &workerResponse.Content.Worker
+		accessReq, _ := json.Marshal(WorkerAccessRequest{
+			Project: config.TrackerProject,
+			Assign:  true,
+			Submit:  false,
+		})
+		buf = bytes.NewBuffer(accessReq)
+		res, err := serverClient.Post(config.TrackerUrl+"/project/request_access", "application/json", buf)
+		if err != nil {
+			panic(err)
+		}
+		logrus.WithFields(logrus.Fields{
+			"response": res.StatusCode,
+		}).Info("Requested ASSIGN permission")
+	} else {
+		var worker TrackerWorker
+
+		fp, _ := os.OpenFile("worker.json", os.O_RDONLY, 0600)
+		workerJsonData, _ := ioutil.ReadAll(fp)
+		_ = json.Unmarshal(workerJsonData, &worker)
+
+		serverWorker = &worker
+	}
 }
 
 func FetchTask() (t *Task, err error) {
-	res, err := serverClient.PostForm(
-		config.ServerUrl + "/task/get",
-		url.Values{ "token": {config.Token} })
-	if err != nil { return }
+
+	if serverWorker == nil {
+		getOrCreateWorker()
+	}
+
+	res, err := serverClient.Get(config.TrackerUrl + "/task/get/" + strconv.Itoa(config.TrackerProject))
+
+	if err != nil {
+		return
+	}
 	defer res.Body.Close()
 
 	switch res.StatusCode {
 	case 200:
 		break
-	case 404, 500:
-		return nil, nil
 	default:
 		return nil, fmt.Errorf("http %s", res.Status)
 	}
 
-	t = new(Task)
-	err = json.NewDecoder(res.Body).Decode(t)
-	if err != nil { return }
+	jsonResponse := FetchTaskResponse{}
+	err = json.NewDecoder(res.Body).Decode(&jsonResponse)
+	if _, ok := err.(*json.SyntaxError); ok {
+		return nil, fmt.Errorf("/task/get returned invalid JSON")
+	} else if err != nil {
+		return
+	}
+
+	if !jsonResponse.Ok {
+		if jsonResponse.Message == "No task available" {
+			return nil, nil
+		}
+		return nil, errors.New(jsonResponse.Message)
+	}
+
+	task := Task{}
+	err = json.Unmarshal([]byte(jsonResponse.Content.Task.Recipe), &task)
+	if _, ok := err.(*json.SyntaxError); ok {
+		return nil, fmt.Errorf("/task/get returned invalid JSON")
+	} else if err != nil {
+		return
+	}
+
+	t = &task
+	t.TaskId = jsonResponse.Content.Task.Id
 
 	return
 }
 
-func PushResult(result *TaskResult, f *os.File) (err error) {
-	if result.WebsiteId == 0 {
+func PushResult(task *Task, f *os.File) (err error) {
+	if task.WebsiteId == 0 {
 		// Not a real result, don't push
 		return nil
 	}
@@ -52,10 +131,10 @@ func PushResult(result *TaskResult, f *os.File) (err error) {
 		return
 	}
 
-	err = uploadChunks(result.WebsiteId, f)
+	err = uploadWebsocket(f, task.UploadToken)
 	if err != nil {
 		logrus.Errorf("Failed to upload file list: %s", err)
-		err2 := CancelTask(result.WebsiteId)
+		err2 := releaseTask(task, TR_FAIL)
 		if err2 != nil {
 			logrus.Error(err2)
 		}
@@ -63,79 +142,62 @@ func PushResult(result *TaskResult, f *os.File) (err error) {
 	}
 
 	// Upload result ignoring errors
-	uploadResult(result)
+	_ = releaseTask(task, TR_OK)
 
 	return
 }
 
-func uploadChunks(websiteId uint64, f *os.File) error {
-	eof := false
-	for iter := 1; !eof; iter++ {
-		// TODO Stream with io.Pipe?
-		var b bytes.Buffer
+func uploadWebsocket(f *os.File, token string) (err error) {
 
-		multi := multipart.NewWriter(&b)
+	u := url.URL{Scheme: config.WsBucketScheme, Host: config.WsBucketHost, Path: "/upload"}
 
-		// Set upload fields
-		var err error
-		err = multi.WriteField("token", config.Token)
-		if err != nil { return err }
-		err = multi.WriteField("website_id", fmt.Sprintf("%d", websiteId))
-		if err != nil { return err }
-
-		// Copy chunk to file_list
-		formFile, err := multi.CreateFormFile("file_list", "file_list")
-		var n int64
-		n, err = io.CopyN(formFile, f, config.ChunkSize)
-		if err != io.EOF && err != nil {
-			return err
-		}
-		if n == 0 {
-			// Don't upload, no content
-			return nil
-		} else if n < config.ChunkSize {
-			err = nil
-			// Break at end of iteration
-			eof = true
-		}
-
-		multi.Close()
-
-		req, err := http.NewRequest(
-			http.MethodPost,
-			config.ServerUrl + "/task/upload",
-			&b)
-		req.Header.Set("content-type", multi.FormDataContentType())
-		if err != nil { return err }
-
-		res, err := serverClient.Do(req)
-		if err != nil { return err }
-		res.Body.Close()
-
-		if res.StatusCode != http.StatusOK {
-			return fmt.Errorf("failed to upload list part %d: %s",
-				iter, res.Status)
-		}
-
-		logrus.WithField("id", websiteId).
-			WithField("part", iter).
-			Infof("Uploading files chunk")
+	header := http.Header{}
+	header.Add("X-Upload-Token", token)
+	conn, _, err := websocket.DefaultDialer.Dial(u.String(), header)
+	if err != nil {
+		return
 	}
+
+	conn.EnableWriteCompression(true) //TODO: Is this necessary?
+
+	socketWriter, _ := conn.NextWriter(websocket.BinaryMessage)
+	_, _ = io.Copy(socketWriter, f)
+	err = socketWriter.Close()
+	if err != nil {
+		logrus.Error("FIXME: couldn't do file upload")
+		return
+	}
+	err = conn.Close()
+	if err != nil {
+		return
+	}
+
 	return nil
 }
 
-func uploadResult(result *TaskResult) (err error) {
-	resultEnc, err := json.Marshal(result)
-	if err != nil { panic(err) }
+func releaseTask(task *Task, taskResult ResultCode) (err error) {
 
-	res, err := serverClient.PostForm(
-		config.ServerUrl + "/task/complete",
-		url.Values {
-			"token": {config.Token},
-			"result": {string(resultEnc)},
-		},
+	req := releaseTaskRequest{
+		TaskId:     task.TaskId,
+		ResultCode: taskResult,
+		// TODO Will implement verification in a later ODDB update
+		Verification: 0,
+	}
+
+	resultEnc, err := json.Marshal(&req)
+	if err != nil {
+		panic(err)
+	}
+	body := bytes.NewBuffer(resultEnc)
+
+	res, err := serverClient.Post(
+		config.TrackerUrl+"/task/release",
+		"application/json",
+		body,
 	)
-	if err != nil { return }
+	if err != nil {
+		return
+	}
 	res.Body.Close()
 
 	if res.StatusCode != http.StatusOK {
@@ -145,20 +207,66 @@ func uploadResult(result *TaskResult) (err error) {
 	return
 }
 
-func CancelTask(websiteId uint64) (err error) {
-	res, err := serverClient.PostForm(
-		config.ServerUrl + "/task/cancel",
-		url.Values{
-			"token": {config.Token},
-			"website_id": {strconv.FormatUint(websiteId, 10)},
-		},
-	)
-	if err != nil { return }
-	res.Body.Close()
+type ServerTripper struct{}
 
-	if res.StatusCode != http.StatusOK {
-		return fmt.Errorf("failed to cancel task: %s", res.Status)
+func (t *ServerTripper) RoundTrip(req *http.Request) (res *http.Response, err error) {
+	req.Header.Set("User-Agent", serverUserAgent)
+
+	//TODO: Use task_tracker/client ?
+	if serverWorker != nil {
+		req.Header.Add("X-Worker-Id", strconv.Itoa(serverWorker.Id))
+		req.Header.Add("X-Secret", base64.StdEncoding.EncodeToString(serverWorker.Secret))
 	}
-
-	return
+	return http.DefaultTransport.RoundTrip(req)
+}
+
+// https://github.com/simon987/task_tracker/blob/master/api/models.go
+
+type releaseTaskRequest struct {
+	TaskId       int64      `json:"task_id"`
+	ResultCode   ResultCode `json:"result"`
+	Verification int64      `json:"verification"`
+}
+
+type WorkerAccessRequest struct {
+	Assign  bool `json:"assign"`
+	Submit  bool `json:"submit"`
+	Project int  `json:"project"`
+}
+
+type FetchTaskResponse struct {
+	Ok      bool   `json:"ok"`
+	Message string `json:"message"`
+	Content struct {
+		Task struct {
+			Id       int64 `json:"id"`
+			Priority int64 `json:"priority"`
+			Project  struct {
+				Id         int64      `json:"id"`
+				Name       string     `json:"name"`
+				Version    string     `json:"version"`
+				AssignRate rate.Limit `json:"assign_rate"`
+				SubmitRate rate.Limit `json:"submit_rate"`
+			} `json:"project"`
+			Recipe string `json:"recipe"`
+		} `json:"task"`
+	} `json:"content"`
+}
+
+type TrackerWorker struct {
+	Alias  string `json:"alias"`
+	Id     int    `json:"id"`
+	Secret []byte `json:"secret"`
+}
+
+type CreateTrackerWorkerResponse struct {
+	Ok      bool   `json:"ok"`
+	Message string `json:"message"`
+	Content struct {
+		Worker TrackerWorker `json:"worker"`
+	} `json:"content"`
+}
+
+type CreateTrackerWorkerRequest struct {
+	Alias string `json:"alias"`
 }

stats.go

@@ -3,6 +3,7 @@ package main
 import (
 	"context"
 	"github.com/sirupsen/logrus"
+	"github.com/spf13/viper"
 	"math"
 	"runtime"
 	"sync/atomic"
@@ -19,11 +20,14 @@ func Stats(c context.Context) {
 	var crawlTicker <-chan time.Time
 	var allocTicker <-chan time.Time
 
-	if config.CrawlStats != 0 {
-		crawlTicker = time.NewTicker(config.CrawlStats).C
+	crawlInterval := viper.GetDuration(ConfCrawlStats)
+	allocInterval := viper.GetDuration(ConfAllocStats)
+
+	if crawlInterval != 0 {
+		crawlTicker = time.Tick(crawlInterval)
 	}
-	if config.AllocStats != 0 {
-		allocTicker = time.NewTicker(config.AllocStats).C
+	if allocInterval != 0 {
+		allocTicker = time.Tick(allocInterval)
 	}
 
 	for {
@@ -32,7 +36,7 @@ func Stats(c context.Context) {
 			startedNow := atomic.LoadUint64(&totalStarted)
 
 			perSecond := float64(startedNow - startedLast) /
-				config.CrawlStats.Seconds()
+				crawlInterval.Seconds()
 
 			// Round to .5
 			perSecond *= 2
@@ -57,7 +61,7 @@ func Stats(c context.Context) {
 			runtime.ReadMemStats(&mem)
 
 			logrus.WithFields(logrus.Fields{
-				"queue_count": atomic.LoadInt64(&totalBuffered),
+				"queue_count": atomic.LoadInt64(&totalQueued),
 				"heap": FormatByteCount(mem.Alloc),
 				"objects": mem.HeapObjects,
 				"num_gc": mem.NumGC,

worker.go

@@ -1,8 +1,8 @@
 package main
 
 import (
+	"github.com/beeker1121/goque"
 	"github.com/sirupsen/logrus"
-	"github.com/valyala/fasthttp"
 	"math"
 	"sort"
 	"strings"
@@ -14,24 +14,38 @@ import (
 var globalWait sync.WaitGroup
 
 type WorkerContext struct {
-	in chan<- Job
-	out <-chan Job
+	OD            *OD
+	Queue         *BufferedQueue
 	lastRateLimit time.Time
 	numRateLimits int
 }
 
-func (w WorkerContext) Worker(results chan<- File) {
-	for job := range w.out {
-		w.step(results, job)
+func (w *WorkerContext) Worker(results chan<- File) {
+	for {
+		job, err := w.Queue.Dequeue()
+		switch err {
+		case goque.ErrEmpty:
+			time.Sleep(500 * time.Millisecond)
+			continue
+
+		case goque.ErrDBClosed:
+			return
+
+		case nil:
+			w.step(results, job)
+
+		default:
+			panic(err)
+		}
 	}
 }
 
-func (w WorkerContext) step(results chan<- File, job Job) {
-	defer w.finishJob(&job)
+func (w *WorkerContext) step(results chan<- File, job Job) {
+	defer w.finishJob()
 
 	var f File
 
-	newJobs, err := DoJob(&job, &f)
+	newJobs, err := w.DoJob(&job, &f)
 	atomic.AddUint64(&totalStarted, 1)
 	if err == ErrKnown {
 		return
@@ -40,20 +54,18 @@ func (w WorkerContext) step(results chan<- File, job Job) {
 	if err != nil {
 		job.Fails++
 
-		if httpErr, ok := err.(*HttpError); ok {
-			switch httpErr.code {
-			case fasthttp.StatusTooManyRequests:
-				err = ErrRateLimit
-			default:
-				// Don't retry HTTP error codes
-				return
-			}
+		if !shouldRetry(err) {
+			atomic.AddUint64(&totalAborted, 1)
+			//logrus.WithField("url", job.UriStr).
+			//	WithError(err).
+			//	Error("Giving up after failure")
+			return
 		}
 
 		if job.Fails > config.Retries {
 			atomic.AddUint64(&totalAborted, 1)
-			logrus.WithField("url", job.UriStr).
-				Errorf("Giving up after %d fails", job.Fails)
+			//logrus.WithField("url", job.UriStr).
+			//	Errorf("Giving up after %d fails", job.Fails)
 		} else {
 			atomic.AddUint64(&totalRetries, 1)
 			if err == ErrRateLimit {
@@ -75,8 +87,10 @@ func (w WorkerContext) step(results chan<- File, job Job) {
 	}
 }
 
-func DoJob(job *Job, f *File) (newJobs []Job, err error) {
-	if len(job.Uri.Path) == 0 { return }
+func (w *WorkerContext) DoJob(job *Job, f *File) (newJobs []Job, err error) {
+	if len(job.Uri.Path) == 0 {
+		return
+	}
 	if job.Uri.Path[len(job.Uri.Path)-1] == '/' {
 		// Load directory
 		links, err := GetDir(job, f)
@@ -93,7 +107,7 @@ func DoJob(job *Job, f *File) (newJobs []Job, err error) {
 		hash := f.HashDir(links)
 
 		// Skip symlinked dirs
-		if job.OD.LoadOrStoreKey(&hash) {
+		if w.OD.LoadOrStoreKey(&hash) {
 			return nil, ErrKnown
 		}
 
@@ -114,7 +128,6 @@ func DoJob(job *Job, f *File) (newJobs []Job, err error) {
 			lastLink = uriStr
 
 			newJobs = append(newJobs, Job{
-				OD:     job.OD,
 				Uri:    link,
 				UriStr: uriStr,
 				Fails:  0,
@@ -139,28 +152,30 @@ func DoJob(job *Job, f *File) (newJobs []Job, err error) {
 			}
 			return nil, err
 		}
-		atomic.AddUint64(&job.OD.Result.FileCount, 1)
+		atomic.AddUint64(&w.OD.Result.FileCount, 1)
 	}
 	return
 }
 
-func (w WorkerContext) queueJob(job Job) {
-	job.OD.Wait.Add(1)
+func (w *WorkerContext) queueJob(job Job) {
+	w.OD.Wait.Add(1)
 
 	if w.numRateLimits > 0 {
-		if time.Since(w.lastRateLimit) > 5 * time.Second {
+		if time.Since(w.lastRateLimit) > 5*time.Second {
 			w.numRateLimits = 0
 		} else {
-			time.Sleep(time.Duration(math.Sqrt(float64(50 * w.numRateLimits))) *
+			time.Sleep(time.Duration(math.Sqrt(float64(50*w.numRateLimits))) *
 				100 * time.Millisecond)
 		}
 	}
 
-	w.in <- job
+	if err := w.Queue.Enqueue(&job); err != nil {
+		panic(err)
+	}
 }
 
-func (w WorkerContext) finishJob(job *Job) {
-	job.OD.Wait.Done()
+func (w *WorkerContext) finishJob() {
+	w.OD.Wait.Done()
 }
 
 func isErrSilent(err error) bool {