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config.go
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config.go
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// Licensed to Elasticsearch B.V. under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Elasticsearch B.V. licenses this file to you under
// the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// 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 add_kubernetes_metadata
import (
"fmt"
"time"
"github.com/elastic/beats/v7/libbeat/common"
"github.com/elastic/beats/v7/libbeat/common/kubernetes"
"github.com/elastic/beats/v7/libbeat/common/kubernetes/metadata"
)
type kubeAnnotatorConfig struct {
KubeConfig string `config:"kube_config"`
KubeClientOptions kubernetes.KubeClientOptions `config:"kube_client_options"`
Node string `config:"node"`
Scope string `config:"scope"`
Namespace string `config:"namespace"`
SyncPeriod time.Duration `config:"sync_period"`
// Annotations are kept after pod is removed, until they haven't been accessed
// for a full `cleanup_timeout`:
CleanupTimeout time.Duration `config:"cleanup_timeout"`
Indexers PluginConfig `config:"indexers"`
Matchers PluginConfig `config:"matchers"`
DefaultMatchers Enabled `config:"default_matchers"`
DefaultIndexers Enabled `config:"default_indexers"`
AddResourceMetadata *metadata.AddResourceMetadataConfig `config:"add_resource_metadata"`
}
type Enabled struct {
Enabled bool `config:"enabled"`
}
type PluginConfig []map[string]common.Config
func defaultKubernetesAnnotatorConfig() kubeAnnotatorConfig {
return kubeAnnotatorConfig{
SyncPeriod: 10 * time.Minute,
CleanupTimeout: 60 * time.Second,
DefaultMatchers: Enabled{true},
DefaultIndexers: Enabled{true},
Scope: "node",
AddResourceMetadata: metadata.GetDefaultResourceMetadataConfig(),
}
}
func (k *kubeAnnotatorConfig) Validate() error {
if k.Scope != "node" && k.Scope != "cluster" {
return fmt.Errorf("invalid scope %s, valid values include `cluster`, `node`", k.Scope)
}
if k.Scope == "cluster" {
k.Node = ""
}
// Checks below were added to warn the users early on and avoid initialising the processor in case the `logs_path`
// matcher config is not valid: supported paths defined as a `logs_path` configuration setting are strictly defined
// if `resource_type` is set
for _, matcher := range k.Matchers {
if matcherCfg, ok := matcher["logs_path"]; ok {
if matcherCfg.HasField("resource_type") {
logsPathMatcher := struct {
LogsPath string `config:"logs_path"`
ResourceType string `config:"resource_type"`
}{}
err := matcherCfg.Unpack(&logsPathMatcher)
if err != nil {
return fmt.Errorf("fail to unpack the `logs_path` matcher configuration: %s", err)
}
if logsPathMatcher.LogsPath == "" {
return fmt.Errorf("invalid logs_path matcher configuration: when resource_type is defined, logs_path must be set as well")
}
if logsPathMatcher.ResourceType != "pod" && logsPathMatcher.ResourceType != "container" {
return fmt.Errorf("invalid resource_type %s, valid values include `pod`, `container`", logsPathMatcher.ResourceType)
}
if logsPathMatcher.ResourceType == "pod" && !(logsPathMatcher.LogsPath == "/var/lib/kubelet/pods/" || logsPathMatcher.LogsPath == "/var/log/pods/") {
return fmt.Errorf("invalid logs_path defined for resource_type: %s, valid values include `/var/lib/kubelet/pods/`, `/var/log/pods/`", logsPathMatcher.ResourceType)
}
if logsPathMatcher.ResourceType == "container" && logsPathMatcher.LogsPath != "/var/log/containers/" {
return fmt.Errorf("invalid logs_path defined for resource_type: %s, valid value is `/var/log/containers/`", logsPathMatcher.ResourceType)
}
}
}
}
return nil
}