forked from rook/rook
Travis Nielsen
0298d1fb29
move core rados packages under cluster folder move daemons under daemon pkg rename flex crd package to attachment pin dep to k8s 1.8.2
84 lines
2.8 KiB
Go
84 lines
2.8 KiB
Go
/*
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Copyright 2016 The Rook Authors. All rights reserved.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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Some of the code below came from https://github.com/digitalocean/ceph_exporter
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which has the same license.
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*/
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package api
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import (
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"sync"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/rook/rook/pkg/clusterd"
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"github.com/rook/rook/pkg/daemon/ceph/collectors"
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)
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// CephExporter wraps all the ceph collectors and provides a single global
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// exporter to extracts metrics out of. It also ensures that the collection
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// is done in a thread-safe manner, the necessary requirement stated by
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// prometheus. It also implements a prometheus.Collector interface in order
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// to register it correctly.
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type CephExporter struct {
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mu sync.Mutex
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collectors []prometheus.Collector
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handler *Handler
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}
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// Verify that the exporter implements the interface correctly.
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var _ prometheus.Collector = &CephExporter{}
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// NewCephExporter creates an instance to CephExporter and returns a reference
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// to it. We can choose to enable a collector to extract stats out of by adding
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// it to the list of collectors.
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func NewCephExporter(h *Handler) *CephExporter {
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return &CephExporter{
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handler: h, // not implemented
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collectors: createCollectors(h.config.context, h.config.clusterInfo.Name),
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}
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}
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// Describe sends all the descriptors of the collectors included to
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// the provided channel.
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func (c *CephExporter) Describe(ch chan<- *prometheus.Desc) {
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for _, cc := range c.collectors {
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cc.Describe(ch)
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}
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}
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// Collect sends the collected metrics from each of the collectors to
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// prometheus. Collect could be called several times concurrently
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// and thus its run is protected by a single mutex.
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func (c *CephExporter) Collect(ch chan<- prometheus.Metric) {
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c.mu.Lock()
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defer c.mu.Unlock()
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// collect metrics from all of our collectors
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for _, cc := range c.collectors {
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cc.Collect(ch)
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}
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}
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func createCollectors(context *clusterd.Context, clusterName string) []prometheus.Collector {
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return []prometheus.Collector{
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collectors.NewClusterUsageCollector(context, clusterName),
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collectors.NewClusterHealthCollector(context, clusterName),
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collectors.NewMonitorCollector(context, clusterName),
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collectors.NewOSDCollector(context, clusterName),
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collectors.NewPoolUsageCollector(context, clusterName),
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}
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}
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