106 lines
2.8 KiB
Go
106 lines
2.8 KiB
Go
// Licensed to Elasticsearch B.V. under one or more contributor
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// license agreements. See the NOTICE file distributed with
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// this work for additional information regarding copyright
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// ownership. Elasticsearch B.V. licenses this file to you under
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// the Apache License, Version 2.0 (the "License"); you may
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// not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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/*
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Package redis contains shared Redis functionality for the metric sets
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*/
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package redis
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import (
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"strings"
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"time"
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"github.com/elastic/beats/libbeat/logp"
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rd "github.com/garyburd/redigo/redis"
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)
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// ParseRedisInfo parses the string returned by the INFO command
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// Every line is split up into key and value
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func ParseRedisInfo(info string) map[string]string {
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// Feed every line into
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result := strings.Split(info, "\r\n")
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// Load redis info values into array
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values := map[string]string{}
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for _, value := range result {
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// Values are separated by :
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parts := ParseRedisLine(value, ":")
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if len(parts) == 2 {
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values[parts[0]] = parts[1]
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}
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}
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return values
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}
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// ParseRedisLine parses a single line returned by INFO
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func ParseRedisLine(s string, delimiter string) []string {
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return strings.Split(s, delimiter)
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}
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// FetchRedisInfo returns a map of requested stats.
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func FetchRedisInfo(stat string, c rd.Conn) (map[string]string, error) {
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defer c.Close()
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out, err := rd.String(c.Do("INFO", stat))
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if err != nil {
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logp.Err("Error retrieving INFO stats: %v", err)
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return nil, err
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}
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return ParseRedisInfo(out), nil
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}
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// FetchSlowLogLength returns count of slow operations
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func FetchSlowLogLength(c rd.Conn) (int64, error) {
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count, err := rd.Int64(c.Do("SLOWLOG", "len"))
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if err != nil {
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logp.Err("Error retrieving slowlog len: %v", err)
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return 0, err
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}
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return count, nil
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}
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// CreatePool creates a redis connection pool
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func CreatePool(
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host, password, network string,
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maxConn int,
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idleTimeout, connTimeout time.Duration,
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) *rd.Pool {
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return &rd.Pool{
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MaxIdle: maxConn,
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IdleTimeout: idleTimeout,
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Dial: func() (rd.Conn, error) {
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c, err := rd.Dial(network, host,
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rd.DialConnectTimeout(connTimeout),
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rd.DialReadTimeout(connTimeout),
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rd.DialWriteTimeout(connTimeout))
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if err != nil {
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return nil, err
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}
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if password != "" {
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if _, err := c.Do("AUTH", password); err != nil {
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c.Close()
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return nil, err
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}
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}
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return c, err
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},
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}
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}
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