b8ed0bd0e3
This computes the space usage for mounted partitions. It takes in a list of mounted partitions from containerHints and computes the device's disk usage(so each mount must be a separate partition). This is useful for users who mount partitions on containers and store most of the container's persistent data on those partitions.
62 lines
1.9 KiB
Go
62 lines
1.9 KiB
Go
// Copyright 2014 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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// Unmarshal's a Containers description json file. The json file contains
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// an array of ContainerHint structs, each with a container's id and networkInterface
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// This allows collecting stats about network interfaces configured outside docker
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// and lxc
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package raw
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import (
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"encoding/json"
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"flag"
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"io/ioutil"
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"os"
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)
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var argContainerHints = flag.String("container_hints", "/etc/cadvisor/container_hints.json", "container hints file")
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type containerHints struct {
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AllHosts []containerHint `json:"all_hosts,omitempty"`
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}
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type containerHint struct {
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FullName string `json:"full_path,omitempty"`
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NetworkInterface *networkInterface `json:"network_interface,omitempty"`
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Mounts []mount `json:"mounts,omitempty"`
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}
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type mount struct {
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HostDir string `json:"host-dir,omitempty"`
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ContainerDir string `json:"container-dir,omitempty"`
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}
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type networkInterface struct {
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VethHost string `json:"veth_host,omitempty"`
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VethChild string `json:"veth_child,omitempty"`
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}
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func getContainerHintsFromFile(containerHintsFile string) (containerHints, error) {
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dat, err := ioutil.ReadFile(containerHintsFile)
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if os.IsNotExist(err) {
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return containerHints{}, nil
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}
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var cHints containerHints
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if err == nil {
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err = json.Unmarshal(dat, &cHints)
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}
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return cHints, err
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}
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