126 lines
3.3 KiB
Go
126 lines
3.3 KiB
Go
// Copyright 2015 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 stdout
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import (
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"bytes"
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"fmt"
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info "github.com/google/cadvisor/info/v1"
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"github.com/google/cadvisor/storage"
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)
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func init() {
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storage.RegisterStorageDriver("stdout", new)
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}
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type stdoutStorage struct {
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Namespace string
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}
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const (
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colCpuCumulativeUsage = "cpu_cumulative_usage"
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// Memory Usage
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colMemoryUsage = "memory_usage"
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// Working set size
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colMemoryWorkingSet = "memory_working_set"
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// Cumulative count of bytes received.
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colRxBytes = "rx_bytes"
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// Cumulative count of receive errors encountered.
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colRxErrors = "rx_errors"
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// Cumulative count of bytes transmitted.
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colTxBytes = "tx_bytes"
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// Cumulative count of transmit errors encountered.
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colTxErrors = "tx_errors"
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// Filesystem summary
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colFsSummary = "fs_summary"
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// Filesystem limit.
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colFsLimit = "fs_limit"
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// Filesystem usage.
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colFsUsage = "fs_usage"
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)
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func new() (storage.StorageDriver, error) {
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return newStorage(*storage.ArgDbHost)
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}
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func (driver *stdoutStorage) containerStatsToValues(stats *info.ContainerStats) (series map[string]uint64) {
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series = make(map[string]uint64)
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// Cumulative Cpu Usage
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series[colCpuCumulativeUsage] = stats.Cpu.Usage.Total
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// Memory Usage
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series[colMemoryUsage] = stats.Memory.Usage
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// Working set size
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series[colMemoryWorkingSet] = stats.Memory.WorkingSet
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// Network stats.
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series[colRxBytes] = stats.Network.RxBytes
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series[colRxErrors] = stats.Network.RxErrors
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series[colTxBytes] = stats.Network.TxBytes
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series[colTxErrors] = stats.Network.TxErrors
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return series
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}
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func (driver *stdoutStorage) containerFsStatsToValues(series *map[string]uint64, stats *info.ContainerStats) {
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for _, fsStat := range stats.Filesystem {
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// Summary stats.
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(*series)[colFsSummary+"."+colFsLimit] += fsStat.Limit
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(*series)[colFsSummary+"."+colFsUsage] += fsStat.Usage
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// Per device stats.
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(*series)[fsStat.Device+"."+colFsLimit] = fsStat.Limit
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(*series)[fsStat.Device+"."+colFsUsage] = fsStat.Usage
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}
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}
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func (driver *stdoutStorage) AddStats(ref info.ContainerReference, stats *info.ContainerStats) error {
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if stats == nil {
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return nil
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}
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containerName := ref.Name
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if len(ref.Aliases) > 0 {
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containerName = ref.Aliases[0]
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}
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var buffer bytes.Buffer
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buffer.WriteString(fmt.Sprintf("cName=%s host=%s", containerName, driver.Namespace))
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series := driver.containerStatsToValues(stats)
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driver.containerFsStatsToValues(&series, stats)
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for key, value := range series {
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buffer.WriteString(fmt.Sprintf(" %s=%v", key, value))
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}
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_, err := fmt.Println(buffer.String())
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return err
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}
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func (driver *stdoutStorage) Close() error {
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return nil
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}
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func newStorage(namespace string) (*stdoutStorage, error) {
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stdoutStorage := &stdoutStorage{
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Namespace: namespace,
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}
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return stdoutStorage, nil
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}
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