mirror of https://github.com/tidwall/tile38.git
293 lines
8.2 KiB
Go
293 lines
8.2 KiB
Go
package controller
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"os"
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"runtime"
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"sort"
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"strings"
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"time"
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"github.com/tidwall/btree"
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"github.com/tidwall/resp"
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"github.com/tidwall/tile38/controller/server"
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"github.com/tidwall/tile38/core"
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)
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func (c *Controller) cmdStats(msg *server.Message) (res string, err error) {
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start := time.Now()
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vs := msg.Values[1:]
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var ms = []map[string]interface{}{}
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if len(vs) == 0 {
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return "", errInvalidNumberOfArguments
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}
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var vals []resp.Value
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var key string
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var ok bool
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for {
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vs, key, ok = tokenval(vs)
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if !ok {
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break
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}
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col := c.getCol(key)
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if col != nil {
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m := make(map[string]interface{})
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m["num_points"] = col.PointCount()
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m["in_memory_size"] = col.TotalWeight()
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m["num_objects"] = col.Count()
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m["num_strings"] = col.StringCount()
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switch msg.OutputType {
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case server.JSON:
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ms = append(ms, m)
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case server.RESP:
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vals = append(vals, resp.ArrayValue(respValuesSimpleMap(m)))
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}
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} else {
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switch msg.OutputType {
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case server.JSON:
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ms = append(ms, nil)
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case server.RESP:
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vals = append(vals, resp.NullValue())
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}
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}
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}
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switch msg.OutputType {
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case server.JSON:
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data, err := json.Marshal(ms)
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if err != nil {
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return "", err
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}
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res = `{"ok":true,"stats":` + string(data) + `,"elapsed":"` + time.Now().Sub(start).String() + "\"}"
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case server.RESP:
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data, err := resp.ArrayValue(vals).MarshalRESP()
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if err != nil {
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return "", err
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}
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res = string(data)
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}
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return res, nil
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}
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func (c *Controller) cmdServer(msg *server.Message) (res string, err error) {
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start := time.Now()
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if len(msg.Values) != 1 {
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return "", errInvalidNumberOfArguments
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}
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m := make(map[string]interface{})
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m["id"] = c.config.serverID()
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if c.config.followHost() != "" {
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m["following"] = fmt.Sprintf("%s:%d", c.config.followHost(), c.config.followPort())
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m["caught_up"] = c.fcup
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m["caught_up_once"] = c.fcuponce
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}
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m["http_transport"] = c.http
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m["pid"] = os.Getpid()
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m["aof_size"] = c.aofsz
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m["num_collections"] = c.cols.Len()
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m["num_hooks"] = len(c.hooks)
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sz := 0
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c.cols.Ascend(func(item btree.Item) bool {
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col := item.(*collectionT).Collection
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sz += col.TotalWeight()
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return true
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})
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m["in_memory_size"] = sz
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points := 0
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objects := 0
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strings := 0
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c.cols.Ascend(func(item btree.Item) bool {
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col := item.(*collectionT).Collection
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points += col.PointCount()
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objects += col.Count()
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strings += col.StringCount()
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return true
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})
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m["num_points"] = points
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m["num_objects"] = objects
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m["num_strings"] = strings
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var mem runtime.MemStats
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runtime.ReadMemStats(&mem)
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avgsz := 0
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if points != 0 {
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avgsz = int(mem.HeapAlloc) / points
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}
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m["mem_alloc"] = mem.Alloc
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m["heap_size"] = mem.HeapAlloc
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m["heap_released"] = mem.HeapReleased
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m["max_heap_size"] = c.config.maxMemory()
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m["avg_item_size"] = avgsz
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m["pointer_size"] = (32 << uintptr(uint64(^uintptr(0))>>63)) / 8
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m["read_only"] = c.config.readOnly()
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switch msg.OutputType {
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case server.JSON:
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data, err := json.Marshal(m)
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if err != nil {
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return "", err
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}
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res = `{"ok":true,"stats":` + string(data) + `,"elapsed":"` + time.Now().Sub(start).String() + "\"}"
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case server.RESP:
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vals := respValuesSimpleMap(m)
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data, err := resp.ArrayValue(vals).MarshalRESP()
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if err != nil {
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return "", err
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}
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res = string(data)
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}
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return res, nil
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}
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func (c *Controller) writeInfoServer(w *bytes.Buffer) {
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fmt.Fprintf(w, "tile38_version:%s\r\n", core.Version)
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fmt.Fprintf(w, "redis_version:%s\r\n", core.Version) //Version of the Redis server
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fmt.Fprintf(w, "uptime_in_seconds:%d\r\n", time.Now().Sub(c.started)/time.Second) //Number of seconds since Redis server start
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}
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func (c *Controller) writeInfoClients(w *bytes.Buffer) {
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fmt.Fprintf(w, "connected_clients:%d\r\n", len(c.conns)) // Number of client connections (excluding connections from slaves)
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}
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func (c *Controller) writeInfoMemory(w *bytes.Buffer) {
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var mem runtime.MemStats
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runtime.ReadMemStats(&mem)
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fmt.Fprintf(w, "used_memory:%d\r\n", mem.Alloc) // total number of bytes allocated by Redis using its allocator (either standard libc, jemalloc, or an alternative allocator such as tcmalloc
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}
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func boolInt(t bool) int {
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if t {
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return 1
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}
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return 0
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}
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func (c *Controller) writeInfoPersistence(w *bytes.Buffer) {
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fmt.Fprintf(w, "aof_enabled:1\r\n")
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fmt.Fprintf(w, "aof_rewrite_in_progress:%d\r\n", boolInt(c.shrinking)) // Flag indicating a AOF rewrite operation is on-going
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fmt.Fprintf(w, "aof_last_rewrite_time_sec:%d\r\n", c.lastShrinkDuration/time.Second) // Duration of the last AOF rewrite operation in seconds
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if c.currentShrinkStart.IsZero() {
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fmt.Fprintf(w, "aof_current_rewrite_time_sec:0\r\n") // Duration of the on-going AOF rewrite operation if any
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} else {
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fmt.Fprintf(w, "aof_current_rewrite_time_sec:%d\r\n", time.Now().Sub(c.currentShrinkStart)/time.Second) // Duration of the on-going AOF rewrite operation if any
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}
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}
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func (c *Controller) writeInfoStats(w *bytes.Buffer) {
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fmt.Fprintf(w, "total_connections_received:%d\r\n", c.statsTotalConns.get()) // Total number of connections accepted by the server
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fmt.Fprintf(w, "total_commands_processed:%d\r\n", c.statsTotalCommands.get()) // Total number of commands processed by the server
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fmt.Fprintf(w, "expired_keys:%d\r\n", c.statsExpired.get()) // Total number of key expiration events
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}
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func (c *Controller) writeInfoReplication(w *bytes.Buffer) {
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fmt.Fprintf(w, "connected_slaves:%d\r\n", len(c.aofconnM)) // Number of connected slaves
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}
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func (c *Controller) writeInfoCluster(w *bytes.Buffer) {
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fmt.Fprintf(w, "cluster_enabled:0\r\n")
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}
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func (c *Controller) cmdInfo(msg *server.Message) (res string, err error) {
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start := time.Now()
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sections := []string{"server", "clients", "memory", "persistence", "stats", "replication", "cpu", "cluster", "keyspace"}
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switch len(msg.Values) {
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default:
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return "", errInvalidNumberOfArguments
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case 1:
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case 2:
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section := strings.ToLower(msg.Values[1].String())
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switch section {
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default:
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sections = []string{section}
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case "all":
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sections = []string{"server", "clients", "memory", "persistence", "stats", "replication", "cpu", "commandstats", "cluster", "keyspace"}
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case "default":
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}
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}
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w := &bytes.Buffer{}
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for i, section := range sections {
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if i > 0 {
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w.WriteString("\r\n")
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}
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switch strings.ToLower(section) {
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default:
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continue
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case "server":
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w.WriteString("# Server\r\n")
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c.writeInfoServer(w)
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case "clients":
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w.WriteString("# Clients\r\n")
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c.writeInfoClients(w)
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case "memory":
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w.WriteString("# Memory\r\n")
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c.writeInfoMemory(w)
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case "persistence":
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w.WriteString("# Persistence\r\n")
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c.writeInfoPersistence(w)
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case "stats":
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w.WriteString("# Stats\r\n")
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c.writeInfoStats(w)
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case "replication":
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w.WriteString("# Replication\r\n")
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c.writeInfoReplication(w)
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case "cpu":
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w.WriteString("# CPU\r\n")
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c.writeInfoCPU(w)
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case "cluster":
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w.WriteString("# Cluster\r\n")
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c.writeInfoCluster(w)
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}
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}
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switch msg.OutputType {
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case server.JSON:
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data, err := json.Marshal(w.String())
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if err != nil {
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return "", err
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}
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res = `{"ok":true,"info":` + string(data) + `,"elapsed":"` + time.Now().Sub(start).String() + "\"}"
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case server.RESP:
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data, err := resp.BytesValue(w.Bytes()).MarshalRESP()
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if err != nil {
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return "", err
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}
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res = string(data)
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}
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return res, nil
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}
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func respValuesSimpleMap(m map[string]interface{}) []resp.Value {
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var keys []string
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for key := range m {
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keys = append(keys, key)
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}
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sort.Strings(keys)
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var vals []resp.Value
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for _, key := range keys {
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val := m[key]
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vals = append(vals, resp.StringValue(key))
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vals = append(vals, resp.StringValue(fmt.Sprintf("%v", val)))
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}
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return vals
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}
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func (c *Controller) statsCollections(line string) (string, error) {
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start := time.Now()
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var key string
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var ms = []map[string]interface{}{}
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for len(line) > 0 {
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line, key = token(line)
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col := c.getCol(key)
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if col != nil {
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m := make(map[string]interface{})
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points := col.PointCount()
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m["num_points"] = points
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m["in_memory_size"] = col.TotalWeight()
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m["num_objects"] = col.Count()
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ms = append(ms, m)
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} else {
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ms = append(ms, nil)
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}
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}
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data, err := json.Marshal(ms)
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if err != nil {
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return "", err
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}
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return `{"ok":true,"stats":` + string(data) + `,"elapsed":"` + time.Now().Sub(start).String() + "\"}", nil
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}
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