123 lines
3.6 KiB
Go
123 lines
3.6 KiB
Go
// Licensed to Elasticsearch B.V. under one or more contributor
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// license agreements. See the NOTICE file distributed with
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// this work for additional information regarding copyright
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// ownership. Elasticsearch B.V. licenses this file to you under
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// the Apache License, Version 2.0 (the "License"); you may
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// 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,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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package namespace
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import (
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"strings"
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as "github.com/aerospike/aerospike-client-go"
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"github.com/pkg/errors"
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"github.com/elastic/beats/libbeat/common"
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"github.com/elastic/beats/libbeat/common/cfgwarn"
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"github.com/elastic/beats/libbeat/logp"
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"github.com/elastic/beats/metricbeat/mb"
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"github.com/elastic/beats/metricbeat/module/aerospike"
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)
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// init registers the MetricSet with the central registry.
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// The New method will be called after the setup of the module and before starting to fetch data
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func init() {
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mb.Registry.MustAddMetricSet("aerospike", "namespace", New,
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mb.DefaultMetricSet(),
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)
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}
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// MetricSet type defines all fields of the MetricSet
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// As a minimum it must inherit the mb.BaseMetricSet fields, but can be extended with
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// additional entries. These variables can be used to persist data or configuration between
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// multiple fetch calls.
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type MetricSet struct {
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mb.BaseMetricSet
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host *as.Host
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client *as.Client
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}
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// New create a new instance of the MetricSet
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// Part of new is also setting up the configuration by processing additional
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// configuration entries if needed.
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func New(base mb.BaseMetricSet) (mb.MetricSet, error) {
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config := struct{}{}
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cfgwarn.Beta("The aerospike namespace metricset is beta")
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if err := base.Module().UnpackConfig(&config); err != nil {
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return nil, err
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}
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host, err := aerospike.ParseHost(base.Host())
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if err != nil {
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return nil, errors.Wrap(err, "Invalid host format, expected hostname:port")
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}
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return &MetricSet{
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BaseMetricSet: base,
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host: host,
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}, nil
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}
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// Fetch methods implements the data gathering and data conversion to the right format
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// It returns the event which is then forward to the output. In case of an error, a
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// descriptive error must be returned.
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func (m *MetricSet) Fetch() ([]common.MapStr, error) {
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var events []common.MapStr
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if err := m.connect(); err != nil {
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return nil, err
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}
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for _, node := range m.client.GetNodes() {
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info, err := as.RequestNodeInfo(node, "namespaces")
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if err != nil {
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logp.Err("Failed to retrieve namespaces from node %s", node.GetName())
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continue
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}
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for _, namespace := range strings.Split(info["namespaces"], ";") {
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info, err := as.RequestNodeInfo(node, "namespace/"+namespace)
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if err != nil {
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logp.Err("Failed to retrieve metrics for namespace %s from node %s", namespace, node.GetName())
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continue
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}
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data, _ := schema.Apply(aerospike.ParseInfo(info["namespace/"+namespace]))
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data["name"] = namespace
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data["node"] = common.MapStr{
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"host": node.GetHost().String(),
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"name": node.GetName(),
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}
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events = append(events, data)
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}
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}
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return events, nil
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}
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// create an aerospike client if it doesn't exist yet
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func (m *MetricSet) connect() error {
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if m.client == nil {
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client, err := as.NewClientWithPolicyAndHost(as.NewClientPolicy(), m.host)
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if err != nil {
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return err
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}
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m.client = client
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}
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return nil
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}
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