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statis.go
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statis.go
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/**
* Tencent is pleased to support the open source community by making Polaris available.
*
* Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
*
* Licensed under the BSD 3-Clause License (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://opensource.org/licenses/BSD-3-Clause
*
* Unless required by applicable law or agreed to in writing, software distributed
* under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
* CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*/
package plugin
import (
"os"
"sync"
"github.com/polarismesh/polaris/common/metrics"
)
var (
statisOnce sync.Once
_statis Statis
)
// Statis Statistical plugin interface
type Statis interface {
Plugin
// ReportCallMetrics report call metrics info
ReportCallMetrics(metric metrics.CallMetric)
// ReportDiscoveryMetrics report discovery metrics
ReportDiscoveryMetrics(metric ...metrics.DiscoveryMetric)
// ReportConfigMetrics report config_center metrics
ReportConfigMetrics(metric ...metrics.ConfigMetrics)
// ReportDiscoverCall report discover service times
ReportDiscoverCall(metric metrics.ClientDiscoverMetric)
}
// compositeStatis is used to receive discover events from the agent
type compositeStatis struct {
chain []Statis
options []ConfigEntry
}
func (c *compositeStatis) Name() string {
return "compositeStatis"
}
func (c *compositeStatis) Initialize(config *ConfigEntry) error {
for i := range c.options {
entry := c.options[i]
item, exist := pluginSet[entry.Name]
if !exist {
log.Errorf("plugin Statis not found target: %s", entry.Name)
continue
}
statis, ok := item.(Statis)
if !ok {
log.Errorf("plugin target: %s not Statis", entry.Name)
continue
}
if err := statis.Initialize(&entry); err != nil {
return err
}
c.chain = append(c.chain, statis)
}
return nil
}
func (c *compositeStatis) Destroy() error {
for i := range c.chain {
if err := c.chain[i].Destroy(); err != nil {
return err
}
}
return nil
}
// ReportCallMetrics report call metrics info
func (c *compositeStatis) ReportCallMetrics(metric metrics.CallMetric) {
for i := range c.chain {
c.chain[i].ReportCallMetrics(metric)
}
}
// ReportDiscoveryMetrics report discovery metrics
func (c *compositeStatis) ReportDiscoveryMetrics(metric ...metrics.DiscoveryMetric) {
for i := range c.chain {
c.chain[i].ReportDiscoveryMetrics(metric...)
}
}
// ReportConfigMetrics report config_center metrics
func (c *compositeStatis) ReportConfigMetrics(metric ...metrics.ConfigMetrics) {
for i := range c.chain {
c.chain[i].ReportConfigMetrics(metric...)
}
}
// ReportDiscoverCall report discover service times
func (c *compositeStatis) ReportDiscoverCall(metric metrics.ClientDiscoverMetric) {
for i := range c.chain {
c.chain[i].ReportDiscoverCall(metric)
}
}
// GetStatis Get statistical plugin
func GetStatis() Statis {
if _statis != nil {
return _statis
}
statisOnce.Do(func() {
var (
entries []ConfigEntry
defaultEntries = []ConfigEntry{
{
Name: "local",
},
{
Name: "prometheus",
},
}
)
if len(config.Statis.Entries) != 0 {
entries = append(entries, config.Statis.Entries...)
} else {
if config.Statis.Name == "local" {
entries = defaultEntries
} else {
entries = append(entries, ConfigEntry{
Name: config.Statis.Name,
Option: config.Statis.Option,
})
}
}
_statis = &compositeStatis{
chain: []Statis{},
options: entries,
}
if err := _statis.Initialize(nil); err != nil {
log.Errorf("Statis plugin init err: %s", err.Error())
os.Exit(-1)
}
})
return _statis
}