mirror of
https://github.com/prometheus/prometheus.git
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78 lines
2.5 KiB
Go
78 lines
2.5 KiB
Go
// Copyright 2017 The Prometheus Authors
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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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package openstack
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import (
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"errors"
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"time"
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"github.com/gophercloud/gophercloud"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/common/log"
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"golang.org/x/net/context"
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"github.com/prometheus/prometheus/config"
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)
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var (
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refreshFailuresCount = prometheus.NewCounter(
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prometheus.CounterOpts{
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Name: "prometheus_sd_openstack_refresh_failures_total",
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Help: "The number of OpenStack-SD scrape failures.",
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})
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refreshDuration = prometheus.NewSummary(
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prometheus.SummaryOpts{
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Name: "prometheus_sd_openstack_refresh_duration_seconds",
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Help: "The duration of an OpenStack-SD refresh in seconds.",
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})
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)
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func init() {
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prometheus.MustRegister(refreshFailuresCount)
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prometheus.MustRegister(refreshDuration)
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}
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// Discovery periodically performs OpenStack-SD requests. It implements
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// the TargetProvider interface.
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type Discovery interface {
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Run(ctx context.Context, ch chan<- []*config.TargetGroup)
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refresh() (tg *config.TargetGroup, err error)
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}
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// NewDiscovery returns a new OpenStackDiscovery which periodically refreshes its targets.
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func NewDiscovery(conf *config.OpenstackSDConfig, l log.Logger) (Discovery, error) {
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opts := gophercloud.AuthOptions{
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IdentityEndpoint: conf.IdentityEndpoint,
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Username: conf.Username,
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UserID: conf.UserID,
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Password: string(conf.Password),
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TenantName: conf.ProjectName,
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TenantID: conf.ProjectID,
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DomainName: conf.DomainName,
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DomainID: conf.DomainID,
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}
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switch conf.Role {
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case config.OpenStackRoleHypervisor:
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hypervisor := NewHypervisorDiscovery(&opts,
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time.Duration(conf.RefreshInterval), conf.Port, conf.Region, l)
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return hypervisor, nil
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case config.OpenStackRoleInstance:
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instance := NewInstanceDiscovery(&opts,
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time.Duration(conf.RefreshInterval), conf.Port, conf.Region, l)
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return instance, nil
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default:
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return nil, errors.New("unknown OpenStack discovery role")
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}
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}
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