prometheus/discovery/triton/triton_test.go

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2016-12-27 18:16:47 -08:00
// Copyright 2016 The Prometheus Authors
// Licensed 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 triton
import (
"fmt"
"net"
"net/http"
"net/http/httptest"
"net/url"
"strconv"
"testing"
"time"
"github.com/prometheus/common/log"
"github.com/prometheus/common/model"
"github.com/prometheus/prometheus/config"
"github.com/stretchr/testify/assert"
"golang.org/x/net/context"
)
var (
conf = config.TritonSDConfig{
Account: "testAccount",
DNSSuffix: "triton.example.com",
Endpoint: "127.0.0.1",
Port: 443,
Version: 1,
RefreshInterval: 1,
TLSConfig: config.TLSConfig{InsecureSkipVerify: true},
}
badconf = config.TritonSDConfig{
Account: "badTestAccount",
DNSSuffix: "bad.triton.example.com",
Endpoint: "127.0.0.1",
Port: 443,
Version: 1,
RefreshInterval: 1,
TLSConfig: config.TLSConfig{
InsecureSkipVerify: false,
KeyFile: "shouldnotexist.key",
CAFile: "shouldnotexist.ca",
CertFile: "shouldnotexist.cert",
},
}
logger = log.Base()
)
func TestTritonSDNew(t *testing.T) {
td, err := New(logger, &conf)
assert.Nil(t, err)
assert.NotNil(t, td)
assert.NotNil(t, td.client)
assert.NotNil(t, td.interval)
assert.NotNil(t, td.logger)
assert.Equal(t, logger, td.logger, "td.logger equals logger")
assert.NotNil(t, td.sdConfig)
assert.Equal(t, conf.Account, td.sdConfig.Account)
assert.Equal(t, conf.DNSSuffix, td.sdConfig.DNSSuffix)
assert.Equal(t, conf.Endpoint, td.sdConfig.Endpoint)
assert.Equal(t, conf.Port, td.sdConfig.Port)
}
func TestTritonSDNewBadConfig(t *testing.T) {
td, err := New(logger, &badconf)
assert.NotNil(t, err)
assert.Nil(t, td)
}
func TestTritonSDRun(t *testing.T) {
var (
td, err = New(logger, &conf)
ch = make(chan []*config.TargetGroup)
ctx, cancel = context.WithCancel(context.Background())
)
assert.Nil(t, err)
assert.NotNil(t, td)
go td.Run(ctx, ch)
select {
case <-time.After(60 * time.Millisecond):
// Expected.
case tgs := <-ch:
t.Fatalf("Unexpected target groups in triton discovery: %s", tgs)
}
cancel()
}
func TestTritonSDRefreshNoTargets(t *testing.T) {
tgts := testTritonSDRefresh(t, "{\"containers\":[]}")
assert.Nil(t, tgts)
}
func TestTritonSDRefreshMultipleTargets(t *testing.T) {
var (
dstr = `{"containers":[
{
"server_uuid":"44454c4c-5000-104d-8037-b7c04f5a5131",
"vm_alias":"server01",
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"vm_brand":"lx",
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"vm_image_uuid":"7b27a514-89d7-11e6-bee6-3f96f367bee7",
"vm_uuid":"ad466fbf-46a2-4027-9b64-8d3cdb7e9072"
},
{
"server_uuid":"a5894692-bd32-4ca1-908a-e2dda3c3a5e6",
"vm_alias":"server02",
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"vm_brand":"kvm",
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"vm_image_uuid":"a5894692-bd32-4ca1-908a-e2dda3c3a5e6",
"vm_uuid":"7b27a514-89d7-11e6-bee6-3f96f367bee7"
}]
}`
)
tgts := testTritonSDRefresh(t, dstr)
assert.NotNil(t, tgts)
assert.Equal(t, 2, len(tgts))
}
func TestTritonSDRefreshNoServer(t *testing.T) {
var (
td, err = New(logger, &conf)
)
assert.Nil(t, err)
assert.NotNil(t, td)
tg, rerr := td.refresh()
assert.NotNil(t, rerr)
assert.Contains(t, rerr.Error(), "an error occurred when requesting targets from the discovery endpoint.")
assert.NotNil(t, tg)
assert.Nil(t, tg.Targets)
}
func testTritonSDRefresh(t *testing.T, dstr string) []model.LabelSet {
var (
td, err = New(logger, &conf)
s = httptest.NewTLSServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintln(w, dstr)
}))
)
defer s.Close()
u, uperr := url.Parse(s.URL)
assert.Nil(t, uperr)
assert.NotNil(t, u)
host, strport, sherr := net.SplitHostPort(u.Host)
assert.Nil(t, sherr)
assert.NotNil(t, host)
assert.NotNil(t, strport)
port, atoierr := strconv.Atoi(strport)
assert.Nil(t, atoierr)
assert.NotNil(t, port)
td.sdConfig.Port = port
assert.Nil(t, err)
assert.NotNil(t, td)
tg, err := td.refresh()
assert.Nil(t, err)
assert.NotNil(t, tg)
return tg.Targets
}