115 lines
3.1 KiB
Go
115 lines
3.1 KiB
Go
// Copyright 2016 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may 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, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package kafka
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import (
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"encoding/json"
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"flag"
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"os"
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"strings"
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"time"
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info "github.com/google/cadvisor/info/v1"
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"github.com/google/cadvisor/storage"
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"github.com/google/cadvisor/utils/container"
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kafka "github.com/Shopify/sarama"
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"github.com/golang/glog"
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)
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func init() {
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storage.RegisterStorageDriver("kafka", new)
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}
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var (
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brokers = flag.String("storage_driver_kafka_broker_list", "localhost:9092", "kafka broker(s) csv")
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topic = flag.String("storage_driver_kafka_topic", "stats", "kafka topic")
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)
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type kafkaStorage struct {
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producer kafka.AsyncProducer
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topic string
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machineName string
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}
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type detailSpec struct {
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Timestamp time.Time `json:"timestamp"`
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MachineName string `json:"machine_name,omitempty"`
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ContainerName string `json:"container_Name,omitempty"`
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ContainerID string `json:"container_Id,omitempty"`
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ContainerLabels map[string]string `json:"container_labels,omitempty"`
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ContainerStats *info.ContainerStats `json:"container_stats,omitempty"`
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}
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func (driver *kafkaStorage) infoToDetailSpec(ref info.ContainerReference, stats *info.ContainerStats) *detailSpec {
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timestamp := time.Now()
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containerID := ref.Id
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containerLabels := ref.Labels
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containerName := container.GetPreferredName(ref)
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detail := &detailSpec{
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Timestamp: timestamp,
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MachineName: driver.machineName,
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ContainerName: containerName,
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ContainerID: containerID,
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ContainerLabels: containerLabels,
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ContainerStats: stats,
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}
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return detail
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}
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func (driver *kafkaStorage) AddStats(ref info.ContainerReference, stats *info.ContainerStats) error {
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detail := driver.infoToDetailSpec(ref, stats)
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b, err := json.Marshal(detail)
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driver.producer.Input() <- &kafka.ProducerMessage{
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Topic: driver.topic,
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Value: kafka.StringEncoder(b),
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}
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return err
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}
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func (self *kafkaStorage) Close() error {
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return self.producer.Close()
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}
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func new() (storage.StorageDriver, error) {
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machineName, err := os.Hostname()
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if err != nil {
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return nil, err
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}
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return newStorage(machineName)
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}
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func newStorage(machineName string) (storage.StorageDriver, error) {
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config := kafka.NewConfig()
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config.Producer.RequiredAcks = kafka.WaitForAll
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brokerList := strings.Split(*brokers, ",")
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glog.V(4).Infof("Kafka brokers:%q", brokers)
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producer, err := kafka.NewAsyncProducer(brokerList, config)
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if err != nil {
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return nil, err
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}
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ret := &kafkaStorage{
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producer: producer,
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topic: *topic,
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machineName: machineName,
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}
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return ret, nil
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}
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