1 files changed, 120 insertions, 0 deletions
diff --git a/modules/setting/queue.go b/modules/setting/queue.go
new file mode 100644
index 00000000..251a6c1e
--- /dev/null
+++ b/modules/setting/queue.go
@@ -0,0 +1,120 @@
+// Copyright 2019 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package setting
+
+import (
+	"path/filepath"
+	"runtime"
+
+	"code.gitea.io/gitea/modules/json"
+	"code.gitea.io/gitea/modules/log"
+)
+
+// QueueSettings represent the settings for a queue from the ini
+type QueueSettings struct {
+	Name string // not an INI option, it is the name for [queue.the-name] section
+
+	Type    string
+	Datadir string
+	ConnStr string // for leveldb or redis
+	Length  int    // max queue length before blocking
+
+	QueueName, SetName string // the name suffix for storage (db key, redis key), "set" is for unique queue
+
+	BatchLength int
+	MaxWorkers  int
+}
+
+func GetQueueSettings(rootCfg ConfigProvider, name string) (QueueSettings, error) {
+	queueSettingsDefault := QueueSettings{
+		Type:    "level",         // dummy, channel, level, redis
+		Datadir: "queues/common", // relative to AppDataPath
+		Length:  100000,          // queue length before a channel queue will block
+
+		QueueName:   "_queue",
+		SetName:     "_unique",
+		BatchLength: 20,
+		MaxWorkers:  runtime.NumCPU() / 2,
+	}
+	if queueSettingsDefault.MaxWorkers < 1 {
+		queueSettingsDefault.MaxWorkers = 1
+	}
+	if queueSettingsDefault.MaxWorkers > 10 {
+		queueSettingsDefault.MaxWorkers = 10
+	}
+
+	// deep copy default settings
+	cfg := QueueSettings{}
+	if cfgBs, err := json.Marshal(queueSettingsDefault); err != nil {
+		return cfg, err
+	} else if err = json.Unmarshal(cfgBs, &cfg); err != nil {
+		return cfg, err
+	}
+
+	cfg.Name = name
+	if sec, err := rootCfg.GetSection("queue"); err == nil {
+		if err = sec.MapTo(&cfg); err != nil {
+			log.Error("Failed to map queue common config for %q: %v", name, err)
+			return cfg, nil
+		}
+	}
+	if sec, err := rootCfg.GetSection("queue." + name); err == nil {
+		if err = sec.MapTo(&cfg); err != nil {
+			log.Error("Failed to map queue spec config for %q: %v", name, err)
+			return cfg, nil
+		}
+		if sec.HasKey("CONN_STR") {
+			cfg.ConnStr = sec.Key("CONN_STR").String()
+		}
+	}
+
+	if cfg.Datadir == "" {
+		cfg.Datadir = queueSettingsDefault.Datadir
+	}
+	if !filepath.IsAbs(cfg.Datadir) {
+		cfg.Datadir = filepath.Join(AppDataPath, cfg.Datadir)
+	}
+	cfg.Datadir = filepath.ToSlash(cfg.Datadir)
+
+	if cfg.Type == "redis" && cfg.ConnStr == "" {
+		cfg.ConnStr = "redis://127.0.0.1:6379/0"
+	}
+
+	if cfg.Length <= 0 {
+		cfg.Length = queueSettingsDefault.Length
+	}
+	if cfg.MaxWorkers <= 0 {
+		cfg.MaxWorkers = queueSettingsDefault.MaxWorkers
+	}
+	if cfg.BatchLength <= 0 {
+		cfg.BatchLength = queueSettingsDefault.BatchLength
+	}
+
+	return cfg, nil
+}
+
+func LoadQueueSettings() {
+	loadQueueFrom(CfgProvider)
+}
+
+func loadQueueFrom(rootCfg ConfigProvider) {
+	hasOld := false
+	handleOldLengthConfiguration := func(rootCfg ConfigProvider, newQueueName, oldSection, oldKey string) {
+		if rootCfg.Section(oldSection).HasKey(oldKey) {
+			hasOld = true
+			log.Error("Removed queue option: `[%s].%s`. Use new options in `[queue.%s]`", oldSection, oldKey, newQueueName)
+		}
+	}
+	handleOldLengthConfiguration(rootCfg, "issue_indexer", "indexer", "ISSUE_INDEXER_QUEUE_TYPE")
+	handleOldLengthConfiguration(rootCfg, "issue_indexer", "indexer", "ISSUE_INDEXER_QUEUE_BATCH_NUMBER")
+	handleOldLengthConfiguration(rootCfg, "issue_indexer", "indexer", "ISSUE_INDEXER_QUEUE_DIR")
+	handleOldLengthConfiguration(rootCfg, "issue_indexer", "indexer", "ISSUE_INDEXER_QUEUE_CONN_STR")
+	handleOldLengthConfiguration(rootCfg, "issue_indexer", "indexer", "UPDATE_BUFFER_LEN")
+	handleOldLengthConfiguration(rootCfg, "mailer", "mailer", "SEND_BUFFER_LEN")
+	handleOldLengthConfiguration(rootCfg, "pr_patch_checker", "repository", "PULL_REQUEST_QUEUE_LENGTH")
+	handleOldLengthConfiguration(rootCfg, "mirror", "repository", "MIRROR_QUEUE_LENGTH")
+	if hasOld {
+		log.Fatal("Please update your app.ini to remove deprecated config options")
+	}
+}