*: modify etcd flags to support finner compaction retention

embed/config.go

@@ -81,7 +81,7 @@ type Config struct {
 	MaxWalFiles             uint   `json:"max-wals"`
 	Name                    string `json:"name"`
 	SnapCount               uint64 `json:"snapshot-count"`
-	AutoCompactionRetention int    `json:"auto-compaction-retention"`
+	AutoCompactionRetention string `json:"auto-compaction-retention"`
 	AutoCompactionMode      string `json:"auto-compaction-mode"`
 
 	// TickMs is the number of milliseconds between heartbeat ticks.

embed/etcd.go

@@ -23,6 +23,7 @@ import (
 	"net"
 	"net/http"
 	"net/url"
+	"strconv"
 	"sync"
 	"time"
 
@@ -127,6 +128,20 @@ func StartEtcd(inCfg *Config) (e *Etcd, err error) {
 		}
 	}
 
+	var (
+		autoCompactionRetention time.Duration
+		h                       int
+	)
+	h, err = strconv.Atoi(cfg.AutoCompactionRetention)
+	if err == nil {
+		autoCompactionRetention = time.Duration(int64(h)) * time.Hour
+	} else {
+		autoCompactionRetention, err = time.ParseDuration(cfg.AutoCompactionRetention)
+		if err != nil {
+			return nil, fmt.Errorf("error parsing AutoCompactionRetention: %v", err)
+		}
+	}
+
 	srvcfg := etcdserver.ServerConfig{
 		Name:                    cfg.Name,
 		ClientURLs:              cfg.ACUrls,
@@ -145,7 +160,7 @@ func StartEtcd(inCfg *Config) (e *Etcd, err error) {
 		PeerTLSInfo:             cfg.PeerTLSInfo,
 		TickMs:                  cfg.TickMs,
 		ElectionTicks:           cfg.ElectionTicks(),
-		AutoCompactionRetention: cfg.AutoCompactionRetention,
+		AutoCompactionRetention: autoCompactionRetention,
 		AutoCompactionMode:      cfg.AutoCompactionMode,
 		QuotaBackendBytes:       cfg.QuotaBackendBytes,
 		MaxTxnOps:               cfg.MaxTxnOps,

etcdmain/config.go

@@ -196,8 +196,8 @@ func newConfig() *config {
 	// version
 	fs.BoolVar(&cfg.printVersion, "version", false, "Print the version and exit.")
 
-	fs.IntVar(&cfg.AutoCompactionRetention, "auto-compaction-retention", 0, "Auto compaction retention for mvcc key value store. 0 means disable auto compaction.")
-	fs.StringVar(&cfg.AutoCompactionMode, "auto-compaction-mode", "periodic", "Interpret 'auto-compaction-retention' as hours when 'periodic', as revision numbers when 'revision'.")
+	fs.StringVar(&cfg.AutoCompactionRetention, "auto-compaction-retention", "0", "Auto compaction retention for mvcc key value store. 0 means disable auto compaction.")
+	fs.StringVar(&cfg.AutoCompactionMode, "auto-compaction-mode", "periodic", "interpret 'auto-compaction-retention' one of: periodic|revision. 'periodic' for duration based retention, defaulting to hours if no time unit is provided (e.g. '5m'). 'revision' for revision number based retention.")
 
 	// pprof profiler via HTTP
 	fs.BoolVar(&cfg.EnablePprof, "enable-pprof", false, "Enable runtime profiling data via HTTP server. Address is at client URL + \"/debug/pprof/\"")

etcdmain/help.go

@@ -99,7 +99,7 @@ clustering flags:
 	--auto-compaction-retention '0'
 		auto compaction retention length. 0 means disable auto compaction.
 	--auto-compaction-mode 'periodic'
-		'periodic' means hours, 'revision' means revision numbers to retain by auto compaction
+		interpret 'auto-compaction-retention' one of: periodic|revision. 'periodic' for duration based retention, defaulting to hours if no time unit is provided (e.g. '5m'). 'revision' for revision number based retention.
 	--enable-v2
 		Accept etcd V2 client requests.
 

etcdserver/config.go

@@ -51,7 +51,7 @@ type ServerConfig struct {
 	ElectionTicks    int
 	BootstrapTimeout time.Duration
 
-	AutoCompactionRetention int
+	AutoCompactionRetention time.Duration
 	AutoCompactionMode      string
 	QuotaBackendBytes       int64
 	MaxTxnOps               uint