open-nomad/command/agent/consul/int_test.go
2018-06-13 15:40:56 -07:00

246 lines
7.2 KiB
Go

package consul_test
import (
"io/ioutil"
"os"
"path/filepath"
"testing"
"time"
"github.com/boltdb/bolt"
consulapi "github.com/hashicorp/consul/api"
"github.com/hashicorp/consul/testutil"
"github.com/hashicorp/nomad/client/allocdir"
"github.com/hashicorp/nomad/client/allocrunner/taskrunner"
"github.com/hashicorp/nomad/client/config"
"github.com/hashicorp/nomad/client/vaultclient"
"github.com/hashicorp/nomad/command/agent/consul"
"github.com/hashicorp/nomad/helper/testlog"
"github.com/hashicorp/nomad/nomad/mock"
"github.com/hashicorp/nomad/nomad/structs"
"github.com/stretchr/testify/assert"
)
// TestConsul_Integration asserts TaskRunner properly registers and deregisters
// services and checks with Consul using an embedded Consul agent.
func TestConsul_Integration(t *testing.T) {
if testing.Short() {
t.Skip("-short set; skipping")
}
assert := assert.New(t)
// Create an embedded Consul server
testconsul, err := testutil.NewTestServerConfig(func(c *testutil.TestServerConfig) {
// If -v wasn't specified squelch consul logging
if !testing.Verbose() {
c.Stdout = ioutil.Discard
c.Stderr = ioutil.Discard
}
})
if err != nil {
t.Fatalf("error starting test consul server: %v", err)
}
defer testconsul.Stop()
conf := config.DefaultConfig()
conf.Node = mock.Node()
conf.ConsulConfig.Addr = testconsul.HTTPAddr
consulConfig, err := conf.ConsulConfig.ApiConfig()
if err != nil {
t.Fatalf("error generating consul config: %v", err)
}
conf.StateDir, err = ioutil.TempDir("", "nomadtest-consulstate")
if err != nil {
t.Fatalf("error creating temp dir: %v", err)
}
defer os.RemoveAll(conf.StateDir)
conf.AllocDir, err = ioutil.TempDir("", "nomdtest-consulalloc")
if err != nil {
t.Fatalf("error creating temp dir: %v", err)
}
defer os.RemoveAll(conf.AllocDir)
tmp, err := ioutil.TempFile("", "state-db")
if err != nil {
t.Fatalf("error creating state db file: %v", err)
}
db, err := bolt.Open(tmp.Name(), 0600, nil)
if err != nil {
t.Fatalf("error creating state db: %v", err)
}
alloc := mock.Alloc()
task := alloc.Job.TaskGroups[0].Tasks[0]
task.Driver = "mock_driver"
task.Config = map[string]interface{}{
"run_for": "1h",
}
// Choose a port that shouldn't be in use
netResource := &structs.NetworkResource{
Device: "eth0",
IP: "127.0.0.1",
MBits: 50,
ReservedPorts: []structs.Port{{Label: "http", Value: 3}},
}
alloc.Resources.Networks[0] = netResource
alloc.TaskResources["web"].Networks[0] = netResource
task.Resources.Networks[0] = netResource
task.Services = []*structs.Service{
{
Name: "httpd",
PortLabel: "http",
Tags: []string{"nomad", "test", "http"},
Checks: []*structs.ServiceCheck{
{
Name: "httpd-http-check",
Type: "http",
Path: "/",
Protocol: "http",
Interval: 9000 * time.Hour,
Timeout: 1, // fail as fast as possible
},
{
Name: "httpd-script-check",
Type: "script",
Command: "/bin/true",
Interval: 10 * time.Second,
Timeout: 10 * time.Second,
},
},
},
{
Name: "httpd2",
PortLabel: "http",
Tags: []string{
"test",
// Use URL-unfriendly tags to test #3620
"public-test.ettaviation.com:80/ redirect=302,https://test.ettaviation.com",
"public-test.ettaviation.com:443/",
},
},
}
logger := testlog.Logger(t)
logUpdate := func(name, state string, event *structs.TaskEvent, lazySync bool) {
logger.Printf("[TEST] test.updater: name=%q state=%q event=%v", name, state, event)
}
allocDir := allocdir.NewAllocDir(logger, filepath.Join(conf.AllocDir, alloc.ID))
if err := allocDir.Build(); err != nil {
t.Fatalf("error building alloc dir: %v", err)
}
taskDir := allocDir.NewTaskDir(task.Name)
vclient := vaultclient.NewMockVaultClient()
consulClient, err := consulapi.NewClient(consulConfig)
assert.Nil(err)
serviceClient := consul.NewServiceClient(consulClient.Agent(), logger, true)
defer serviceClient.Shutdown() // just-in-case cleanup
consulRan := make(chan struct{})
go func() {
serviceClient.Run()
close(consulRan)
}()
tr := taskrunner.NewTaskRunner(logger, conf, db, logUpdate, taskDir, alloc, task, vclient, serviceClient)
tr.MarkReceived()
go tr.Run()
defer func() {
// Make sure we always shutdown task runner when the test exits
select {
case <-tr.WaitCh():
// Exited cleanly, no need to kill
default:
tr.Kill("", "", true) // just in case
}
}()
// Block waiting for the service to appear
catalog := consulClient.Catalog()
res, meta, err := catalog.Service("httpd2", "test", nil)
assert.Nil(err)
for i := 0; len(res) == 0 && i < 10; i++ {
//Expected initial request to fail, do a blocking query
res, meta, err = catalog.Service("httpd2", "test", &consulapi.QueryOptions{WaitIndex: meta.LastIndex + 1, WaitTime: 3 * time.Second})
if err != nil {
t.Fatalf("error querying for service: %v", err)
}
}
assert.Len(res, 1)
// Truncate results
res = res[:]
// Assert the service with the checks exists
for i := 0; len(res) == 0 && i < 10; i++ {
res, meta, err = catalog.Service("httpd", "http", &consulapi.QueryOptions{WaitIndex: meta.LastIndex + 1, WaitTime: 3 * time.Second})
assert.Nil(err)
}
assert.Len(res, 1)
// Assert the script check passes (mock_driver script checks always
// pass) after having time to run once
time.Sleep(2 * time.Second)
checks, _, err := consulClient.Health().Checks("httpd", nil)
assert.Nil(err)
assert.Len(checks, 2)
for _, check := range checks {
if expected := "httpd"; check.ServiceName != expected {
t.Fatalf("expected checks to be for %q but found service name = %q", expected, check.ServiceName)
}
switch check.Name {
case "httpd-http-check":
// Port check should fail
if expected := consulapi.HealthCritical; check.Status != expected {
t.Errorf("expected %q status to be %q but found %q", check.Name, expected, check.Status)
}
case "httpd-script-check":
// mock_driver script checks always succeed
if expected := consulapi.HealthPassing; check.Status != expected {
t.Errorf("expected %q status to be %q but found %q", check.Name, expected, check.Status)
}
default:
t.Errorf("unexpected check %q with status %q", check.Name, check.Status)
}
}
// Assert the service client returns all the checks for the allocation.
reg, err := serviceClient.AllocRegistrations(alloc.ID)
if err != nil {
t.Fatalf("unexpected error retrieving allocation checks: %v", err)
}
if reg == nil {
t.Fatalf("Unexpected nil allocation registration")
}
if snum := reg.NumServices(); snum != 2 {
t.Fatalf("Unexpected number of services registered. Got %d; want 2", snum)
}
if cnum := reg.NumChecks(); cnum != 2 {
t.Fatalf("Unexpected number of checks registered. Got %d; want 2", cnum)
}
logger.Printf("[TEST] consul.test: killing task")
// Kill the task
tr.Kill("", "", false)
select {
case <-tr.WaitCh():
case <-time.After(10 * time.Second):
t.Fatalf("timed out waiting for Run() to exit")
}
// Shutdown Consul ServiceClient to ensure all pending operations complete
if err := serviceClient.Shutdown(); err != nil {
t.Errorf("error shutting down Consul ServiceClient: %v", err)
}
// Ensure Consul is clean
services, _, err := catalog.Services(nil)
assert.Nil(err)
assert.Len(services, 1)
assert.Contains(services, "consul")
}