Module: KubernetesMetadata::Common

Included in:
Fluent::Plugin::KubernetesMetadataFilter, WatchNamespaces, WatchPods
Defined in:
lib/fluent/plugin/kubernetes_metadata_common.rb

Instance Method Summary collapse

Instance Method Details

#match_annotations(annotations) ⇒ Object 



22
23
24
25
26
27
28
29
30
31
32
 
# File 'lib/fluent/plugin/kubernetes_metadata_common.rb', line 22

def match_annotations(annotations)
  result = {}
  @annotations_regexps.each do |regexp|
    annotations.each do |key, value|
      if ::Fluent::StringUtil.match_regexp(regexp, key.to_s)
        result[key] = value
      end
    end
  end
  result
end

#parse_namespace_metadata(namespace_object) ⇒ Object 



34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
 
# File 'lib/fluent/plugin/kubernetes_metadata_common.rb', line 34

def parse_namespace_metadata(namespace_object)
  labels = String.new
  labels = syms_to_strs(namespace_object['metadata']['labels'].to_h) unless @skip_labels

  annotations = match_annotations(syms_to_strs(namespace_object['metadata']['annotations'].to_h))
  if @de_dot
    self.de_dot!(labels) unless @skip_labels
    self.de_dot!(annotations)
  end
  kubernetes_metadata = {
    'namespace_id' => namespace_object['metadata']['uid'],
    'creation_timestamp' => namespace_object['metadata']['creationTimestamp']
  }
  kubernetes_metadata['namespace_labels'] = labels unless labels.empty?
  kubernetes_metadata['namespace_annotations'] = annotations unless annotations.empty?
  return kubernetes_metadata
end

#parse_pod_metadata(pod_object) ⇒ Object 



52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
 
# File 'lib/fluent/plugin/kubernetes_metadata_common.rb', line 52

def parse_pod_metadata(pod_object)
  labels = String.new
  labels = syms_to_strs(pod_object['metadata']['labels'].to_h) unless @skip_labels

  annotations = match_annotations(syms_to_strs(pod_object['metadata']['annotations'].to_h))
  if @de_dot
    self.de_dot!(labels) unless @skip_labels
    self.de_dot!(annotations)
  end

  # collect container informations
  container_meta = {}
  begin
    pod_object['status']['containerStatuses'].each do|container_status|
      # get plain container id (eg. docker://hash -> hash)
      container_id = container_status['containerID'].sub /^[-_a-zA-Z0-9]+:\/\//, ''
      unless @skip_container_metadata
        container_meta[container_id] = {
            'name' => container_status['name'],
            'image' => container_status['image'],
            'image_id' => container_status['imageID']
        }
      else
        container_meta[container_id] = {
            'name' => container_status['name']
        }
      end
    end
  rescue
    log.debug("parsing container meta information failed for: #{pod_object['metadata']['namespace']}/#{pod_object['metadata']['name']} ")
  end

  kubernetes_metadata = {
      'namespace_name' => pod_object['metadata']['namespace'],
      'pod_id'         => pod_object['metadata']['uid'],
      'pod_name'       => pod_object['metadata']['name'],
      'containers'     => syms_to_strs(container_meta),
      'host'           => pod_object['spec']['nodeName']
  }
  kubernetes_metadata['annotations'] = annotations unless annotations.empty?
  kubernetes_metadata['labels'] = labels unless labels.empty?
  kubernetes_metadata['master_url'] = @kubernetes_url unless @skip_master_url

  # 获取ownerReferences 
  log.debug("parsing container ownerReferences metadata: #{pod_object['metadata']['ownerReferences']}")
  owner_kind = String.new
  owner_name = String.new
  begin
    pod_object['metadata']['ownerReferences'].each do|owner_reference|
      owner_kind = owner_reference['kind']
      if owner_kind == "ReplicaSet"
        name_length = owner_reference['name'].length - 11
        owner_name = owner_reference['name'][0, name_length]
      else
        owner_name = owner_reference['name']
      end
    end
  rescue
    log.debug("failed parsing container ownerReferences metadata: #{pod_object['metadata']['ownerReferences']}")
  end
  kubernetes_metadata['owner_kind'] = owner_kind
  kubernetes_metadata['owner_name'] = owner_name
  kubernetes_metadata['ksc_owner_filter'] = "#{kubernetes_metadata['namespace_name']}_#{owner_name}_#{owner_kind}"

  return kubernetes_metadata
end

#syms_to_strs(hsh) ⇒ Object 



119
120
121
122
123
124
125
126
127
128
129
130
131
132
 
# File 'lib/fluent/plugin/kubernetes_metadata_common.rb', line 119

def syms_to_strs(hsh)
  newhsh = {}
  hsh.each_pair do |kk,vv|
    if vv.is_a?(Hash)
      vv = syms_to_strs(vv)
    end
    if kk.is_a?(Symbol)
      newhsh[kk.to_s] = vv
    else
      newhsh[kk] = vv
    end
  end
  newhsh
end