/
environ_test.go
1710 lines (1486 loc) · 60.3 KB
/
environ_test.go
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// Copyright 2013 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.
package azure
import (
"bytes"
"encoding/base64"
"encoding/xml"
"fmt"
"io/ioutil"
"net/http"
"net/url"
"path"
"regexp"
"strings"
"sync"
"github.com/juju/names"
"github.com/juju/testing"
jc "github.com/juju/testing/checkers"
gc "launchpad.net/gocheck"
"launchpad.net/gwacl"
"github.com/juju/juju/constraints"
"github.com/juju/juju/environmentserver/authentication"
"github.com/juju/juju/environs"
"github.com/juju/juju/environs/bootstrap"
"github.com/juju/juju/environs/config"
"github.com/juju/juju/environs/imagemetadata"
"github.com/juju/juju/environs/instances"
"github.com/juju/juju/environs/simplestreams"
"github.com/juju/juju/environs/storage"
envtesting "github.com/juju/juju/environs/testing"
"github.com/juju/juju/environs/tools"
"github.com/juju/juju/instance"
"github.com/juju/juju/mongo"
"github.com/juju/juju/network"
"github.com/juju/juju/provider/common"
"github.com/juju/juju/state/api"
apiparams "github.com/juju/juju/state/api/params"
coretesting "github.com/juju/juju/testing"
"github.com/juju/juju/version"
)
type baseEnvironSuite struct {
providerSuite
}
type environSuite struct {
baseEnvironSuite
}
var _ = gc.Suite(&environSuite{})
var _ = gc.Suite(&startInstanceSuite{})
func roleSizeByName(name string) gwacl.RoleSize {
for _, roleSize := range gwacl.RoleSizes {
if roleSize.Name == name {
return roleSize
}
}
panic(fmt.Errorf("role size %s not found", name))
}
// makeEnviron creates a fake azureEnviron with arbitrary configuration.
func makeEnviron(c *gc.C) *azureEnviron {
attrs := makeAzureConfigMap(c)
return makeEnvironWithConfig(c, attrs)
}
// makeEnvironWithConfig creates a fake azureEnviron with the specified configuration.
func makeEnvironWithConfig(c *gc.C, attrs map[string]interface{}) *azureEnviron {
cfg, err := config.New(config.NoDefaults, attrs)
c.Assert(err, gc.IsNil)
env, err := NewEnviron(cfg)
c.Assert(err, gc.IsNil)
// Prevent the test from trying to query for a storage-account key.
env.storageAccountKey = "fake-storage-account-key"
return env
}
// setDummyStorage injects the local provider's fake storage implementation
// into the given environment, so that tests can manipulate storage as if it
// were real.
func (s *baseEnvironSuite) setDummyStorage(c *gc.C, env *azureEnviron) {
closer, storage, _ := envtesting.CreateLocalTestStorage(c)
env.storage = storage
s.AddCleanup(func(c *gc.C) { closer.Close() })
}
func (*environSuite) TestGetEndpoint(c *gc.C) {
c.Check(
getEndpoint("West US"),
gc.Equals,
"https://management.core.windows.net/")
c.Check(
getEndpoint("China East"),
gc.Equals,
"https://management.core.chinacloudapi.cn/")
}
func (*environSuite) TestGetSnapshot(c *gc.C) {
original := azureEnviron{ecfg: new(azureEnvironConfig)}
snapshot := original.getSnapshot()
// The snapshot is identical to the original.
c.Check(*snapshot, gc.DeepEquals, original)
// However, they are distinct objects.
c.Check(snapshot, gc.Not(gc.Equals), &original)
// It's a shallow copy; they still share pointers.
c.Check(snapshot.ecfg, gc.Equals, original.ecfg)
// Neither object is locked at the end of the copy.
c.Check(original.Mutex, gc.Equals, sync.Mutex{})
c.Check(snapshot.Mutex, gc.Equals, sync.Mutex{})
}
func (*environSuite) TestGetSnapshotLocksEnviron(c *gc.C) {
original := azureEnviron{}
coretesting.TestLockingFunction(&original.Mutex, func() { original.getSnapshot() })
}
func (*environSuite) TestConfigReturnsConfig(c *gc.C) {
cfg := new(config.Config)
ecfg := azureEnvironConfig{Config: cfg}
env := azureEnviron{ecfg: &ecfg}
c.Check(env.Config(), gc.Equals, cfg)
}
func (*environSuite) TestConfigLocksEnviron(c *gc.C) {
env := azureEnviron{ecfg: new(azureEnvironConfig)}
coretesting.TestLockingFunction(&env.Mutex, func() { env.Config() })
}
func (*environSuite) TestGetManagementAPI(c *gc.C) {
env := makeEnviron(c)
context, err := env.getManagementAPI()
c.Assert(err, gc.IsNil)
defer env.releaseManagementAPI(context)
c.Check(context, gc.NotNil)
c.Check(context.ManagementAPI, gc.NotNil)
c.Check(context.certFile, gc.NotNil)
c.Check(context.GetRetryPolicy(), gc.DeepEquals, retryPolicy)
}
func (*environSuite) TestReleaseManagementAPIAcceptsNil(c *gc.C) {
env := makeEnviron(c)
env.releaseManagementAPI(nil)
// The real test is that this does not panic.
}
func (*environSuite) TestReleaseManagementAPIAcceptsIncompleteContext(c *gc.C) {
env := makeEnviron(c)
context := azureManagementContext{
ManagementAPI: nil,
certFile: nil,
}
env.releaseManagementAPI(&context)
// The real test is that this does not panic.
}
func getAzureServiceListResponse(c *gc.C, services ...gwacl.HostedServiceDescriptor) []gwacl.DispatcherResponse {
list := gwacl.HostedServiceDescriptorList{HostedServices: services}
listXML, err := list.Serialize()
c.Assert(err, gc.IsNil)
responses := []gwacl.DispatcherResponse{gwacl.NewDispatcherResponse(
[]byte(listXML),
http.StatusOK,
nil,
)}
return responses
}
// getAzureServiceResponse returns a gwacl.DispatcherResponse corresponding
// to the API request used to get the properties of a Service.
func getAzureServiceResponse(c *gc.C, service gwacl.HostedService) gwacl.DispatcherResponse {
serviceXML, err := service.Serialize()
c.Assert(err, gc.IsNil)
return gwacl.NewDispatcherResponse([]byte(serviceXML), http.StatusOK, nil)
}
func patchWithServiceListResponse(c *gc.C, services []gwacl.HostedServiceDescriptor) *[]*gwacl.X509Request {
responses := getAzureServiceListResponse(c, services...)
return gwacl.PatchManagementAPIResponses(responses)
}
func prepareInstancesResponses(c *gc.C, prefix string, services ...*gwacl.HostedService) []gwacl.DispatcherResponse {
descriptors := make([]gwacl.HostedServiceDescriptor, len(services))
for i, service := range services {
descriptors[i] = service.HostedServiceDescriptor
}
responses := getAzureServiceListResponse(c, descriptors...)
for _, service := range services {
if !strings.HasPrefix(service.ServiceName, prefix) {
continue
}
serviceXML, err := service.Serialize()
c.Assert(err, gc.IsNil)
serviceGetResponse := gwacl.NewDispatcherResponse([]byte(serviceXML), http.StatusOK, nil)
responses = append(responses, serviceGetResponse)
}
return responses
}
func patchInstancesResponses(c *gc.C, prefix string, services ...*gwacl.HostedService) *[]*gwacl.X509Request {
responses := prepareInstancesResponses(c, prefix, services...)
return gwacl.PatchManagementAPIResponses(responses)
}
func (s *environSuite) TestSupportedArchitectures(c *gc.C) {
env := s.setupEnvWithDummyMetadata(c)
a, err := env.SupportedArchitectures()
c.Assert(err, gc.IsNil)
c.Assert(a, gc.DeepEquals, []string{"amd64"})
}
func (s *environSuite) TestSupportNetworks(c *gc.C) {
env := s.setupEnvWithDummyMetadata(c)
c.Assert(env.SupportNetworks(), jc.IsFalse)
}
func (suite *environSuite) TestGetEnvPrefixContainsEnvName(c *gc.C) {
env := makeEnviron(c)
c.Check(strings.Contains(env.getEnvPrefix(), env.Config().Name()), jc.IsTrue)
}
func (*environSuite) TestGetContainerName(c *gc.C) {
env := makeEnviron(c)
expected := env.getEnvPrefix() + "private"
c.Check(env.getContainerName(), gc.Equals, expected)
}
func (suite *environSuite) TestAllInstances(c *gc.C) {
env := makeEnviron(c)
prefix := env.getEnvPrefix()
service1 := makeLegacyDeployment(env, prefix+"service1")
service2 := makeDeployment(env, prefix+"service2")
service3 := makeDeployment(env, "not"+prefix+"service3")
requests := patchInstancesResponses(c, prefix, service1, service2, service3)
instances, err := env.AllInstances()
c.Assert(err, gc.IsNil)
c.Check(len(instances), gc.Equals, 3)
c.Check(instances[0].Id(), gc.Equals, instance.Id(prefix+"service1"))
service2Role1Name := service2.Deployments[0].RoleList[0].RoleName
service2Role2Name := service2.Deployments[0].RoleList[1].RoleName
c.Check(instances[1].Id(), gc.Equals, instance.Id(prefix+"service2-"+service2Role1Name))
c.Check(instances[2].Id(), gc.Equals, instance.Id(prefix+"service2-"+service2Role2Name))
c.Check(len(*requests), gc.Equals, 3)
}
func (suite *environSuite) TestInstancesReturnsFilteredList(c *gc.C) {
env := makeEnviron(c)
prefix := env.getEnvPrefix()
service := makeDeployment(env, prefix+"service")
requests := patchInstancesResponses(c, prefix, service)
role1Name := service.Deployments[0].RoleList[0].RoleName
instId := instance.Id(prefix + "service-" + role1Name)
instances, err := env.Instances([]instance.Id{instId})
c.Assert(err, gc.IsNil)
c.Check(len(instances), gc.Equals, 1)
c.Check(instances[0].Id(), gc.Equals, instId)
c.Check(len(*requests), gc.Equals, 2)
}
func (suite *environSuite) TestInstancesReturnsErrNoInstancesIfNoInstancesRequested(c *gc.C) {
services := []gwacl.HostedServiceDescriptor{{ServiceName: "deployment-1"}, {ServiceName: "deployment-2"}}
patchWithServiceListResponse(c, services)
env := makeEnviron(c)
instances, err := env.Instances([]instance.Id{})
c.Check(err, gc.Equals, environs.ErrNoInstances)
c.Check(instances, gc.IsNil)
}
func (suite *environSuite) TestInstancesReturnsErrNoInstancesIfNoInstanceFound(c *gc.C) {
services := []gwacl.HostedServiceDescriptor{}
patchWithServiceListResponse(c, services)
env := makeEnviron(c)
instances, err := env.Instances([]instance.Id{"deploy-id"})
c.Check(err, gc.Equals, environs.ErrNoInstances)
c.Check(instances, gc.IsNil)
}
func (suite *environSuite) TestInstancesReturnsPartialInstancesIfSomeInstancesAreNotFound(c *gc.C) {
env := makeEnviron(c)
prefix := env.getEnvPrefix()
service := makeDeployment(env, prefix+"service")
role1Name := service.Deployments[0].RoleList[0].RoleName
role2Name := service.Deployments[0].RoleList[1].RoleName
inst1Id := instance.Id(prefix + "service-" + role1Name)
inst2Id := instance.Id(prefix + "service-" + role2Name)
patchInstancesResponses(c, prefix, service)
instances, err := env.Instances([]instance.Id{inst1Id, "unknown", inst2Id})
c.Assert(err, gc.Equals, environs.ErrPartialInstances)
c.Check(len(instances), gc.Equals, 3)
c.Check(instances[0].Id(), gc.Equals, inst1Id)
c.Check(instances[1], gc.IsNil)
c.Check(instances[2].Id(), gc.Equals, inst2Id)
}
func (*environSuite) TestStorage(c *gc.C) {
env := makeEnviron(c)
baseStorage := env.Storage()
storage, ok := baseStorage.(*azureStorage)
c.Check(ok, gc.Equals, true)
c.Assert(storage, gc.NotNil)
c.Check(storage.storageContext.getContainer(), gc.Equals, env.getContainerName())
context, err := storage.getStorageContext()
c.Assert(err, gc.IsNil)
c.Check(context.Account, gc.Equals, env.ecfg.storageAccountName())
c.Check(context.RetryPolicy, gc.DeepEquals, retryPolicy)
}
func (*environSuite) TestQueryStorageAccountKeyGetsKey(c *gc.C) {
env := makeEnviron(c)
keysInAzure := gwacl.StorageAccountKeys{Primary: "a-key"}
azureResponse, err := xml.Marshal(keysInAzure)
c.Assert(err, gc.IsNil)
requests := gwacl.PatchManagementAPIResponses([]gwacl.DispatcherResponse{
gwacl.NewDispatcherResponse(azureResponse, http.StatusOK, nil),
})
returnedKey, err := env.queryStorageAccountKey()
c.Assert(err, gc.IsNil)
c.Check(returnedKey, gc.Equals, keysInAzure.Primary)
c.Assert(*requests, gc.HasLen, 1)
c.Check((*requests)[0].Method, gc.Equals, "GET")
}
func (*environSuite) TestGetStorageContextCreatesStorageContext(c *gc.C) {
env := makeEnviron(c)
stor, err := env.getStorageContext()
c.Assert(err, gc.IsNil)
c.Assert(stor, gc.NotNil)
c.Check(stor.Account, gc.Equals, env.ecfg.storageAccountName())
c.Check(stor.AzureEndpoint, gc.Equals, gwacl.GetEndpoint(env.ecfg.location()))
}
func (*environSuite) TestGetStorageContextUsesKnownStorageAccountKey(c *gc.C) {
env := makeEnviron(c)
env.storageAccountKey = "my-key"
stor, err := env.getStorageContext()
c.Assert(err, gc.IsNil)
c.Check(stor.Key, gc.Equals, "my-key")
}
func (*environSuite) TestGetStorageContextQueriesStorageAccountKeyIfNeeded(c *gc.C) {
env := makeEnviron(c)
env.storageAccountKey = ""
keysInAzure := gwacl.StorageAccountKeys{Primary: "my-key"}
azureResponse, err := xml.Marshal(keysInAzure)
c.Assert(err, gc.IsNil)
gwacl.PatchManagementAPIResponses([]gwacl.DispatcherResponse{
gwacl.NewDispatcherResponse(azureResponse, http.StatusOK, nil),
})
stor, err := env.getStorageContext()
c.Assert(err, gc.IsNil)
c.Check(stor.Key, gc.Equals, keysInAzure.Primary)
c.Check(env.storageAccountKey, gc.Equals, keysInAzure.Primary)
}
func (*environSuite) TestGetStorageContextFailsIfNoKeyAvailable(c *gc.C) {
env := makeEnviron(c)
env.storageAccountKey = ""
azureResponse, err := xml.Marshal(gwacl.StorageAccountKeys{})
c.Assert(err, gc.IsNil)
gwacl.PatchManagementAPIResponses([]gwacl.DispatcherResponse{
gwacl.NewDispatcherResponse(azureResponse, http.StatusOK, nil),
})
_, err = env.getStorageContext()
c.Assert(err, gc.NotNil)
c.Check(err, gc.ErrorMatches, "no keys available for storage account")
}
func (*environSuite) TestUpdateStorageAccountKeyGetsFreshKey(c *gc.C) {
env := makeEnviron(c)
keysInAzure := gwacl.StorageAccountKeys{Primary: "my-key"}
azureResponse, err := xml.Marshal(keysInAzure)
c.Assert(err, gc.IsNil)
gwacl.PatchManagementAPIResponses([]gwacl.DispatcherResponse{
gwacl.NewDispatcherResponse(azureResponse, http.StatusOK, nil),
})
key, err := env.updateStorageAccountKey(env.getSnapshot())
c.Assert(err, gc.IsNil)
c.Check(key, gc.Equals, keysInAzure.Primary)
c.Check(env.storageAccountKey, gc.Equals, keysInAzure.Primary)
}
func (*environSuite) TestUpdateStorageAccountKeyReturnsError(c *gc.C) {
env := makeEnviron(c)
env.storageAccountKey = ""
gwacl.PatchManagementAPIResponses([]gwacl.DispatcherResponse{
gwacl.NewDispatcherResponse(nil, http.StatusInternalServerError, nil),
})
_, err := env.updateStorageAccountKey(env.getSnapshot())
c.Assert(err, gc.NotNil)
c.Check(err, gc.ErrorMatches, "cannot obtain storage account keys: GET request failed.*Internal Server Error.*")
c.Check(env.storageAccountKey, gc.Equals, "")
}
func (*environSuite) TestUpdateStorageAccountKeyDetectsConcurrentUpdate(c *gc.C) {
env := makeEnviron(c)
env.storageAccountKey = ""
keysInAzure := gwacl.StorageAccountKeys{Primary: "my-key"}
azureResponse, err := xml.Marshal(keysInAzure)
c.Assert(err, gc.IsNil)
gwacl.PatchManagementAPIResponses([]gwacl.DispatcherResponse{
gwacl.NewDispatcherResponse(azureResponse, http.StatusOK, nil),
})
// Here we use a snapshot that's different from the environment, to
// simulate a concurrent change to the environment.
_, err = env.updateStorageAccountKey(makeEnviron(c))
c.Assert(err, gc.NotNil)
// updateStorageAccountKey detects the change, and refuses to write its
// outdated information into env.
c.Check(err, gc.ErrorMatches, "environment was reconfigured")
c.Check(env.storageAccountKey, gc.Equals, "")
}
func (*environSuite) TestSetConfigValidates(c *gc.C) {
env := makeEnviron(c)
originalCfg := env.ecfg
attrs := makeAzureConfigMap(c)
// This config is not valid. It lacks essential information.
delete(attrs, "management-subscription-id")
badCfg, err := config.New(config.NoDefaults, attrs)
c.Assert(err, gc.IsNil)
err = env.SetConfig(badCfg)
// Since the config was not valid, SetConfig returns an error. It
// does not update the environment's config either.
c.Check(err, gc.NotNil)
c.Check(
err,
gc.ErrorMatches,
"management-subscription-id: expected string, got nothing")
c.Check(env.ecfg, gc.Equals, originalCfg)
}
func (*environSuite) TestSetConfigUpdatesConfig(c *gc.C) {
env := makeEnviron(c)
// We're going to set a new config. It can be recognized by its
// unusual default Ubuntu release series: 7.04 Feisty Fawn.
attrs := makeAzureConfigMap(c)
attrs["default-series"] = "feisty"
cfg, err := config.New(config.NoDefaults, attrs)
c.Assert(err, gc.IsNil)
err = env.SetConfig(cfg)
c.Assert(err, gc.IsNil)
c.Check(config.PreferredSeries(env.ecfg.Config), gc.Equals, "feisty")
}
func (*environSuite) TestSetConfigLocksEnviron(c *gc.C) {
env := makeEnviron(c)
cfg, err := config.New(config.NoDefaults, makeAzureConfigMap(c))
c.Assert(err, gc.IsNil)
coretesting.TestLockingFunction(&env.Mutex, func() { env.SetConfig(cfg) })
}
func (*environSuite) TestSetConfigWillNotUpdateName(c *gc.C) {
// Once the environment's name has been set, it cannot be updated.
// Global validation rejects such a change.
// This matters because the attribute is not protected by a lock.
env := makeEnviron(c)
originalName := env.Config().Name()
attrs := makeAzureConfigMap(c)
attrs["name"] = "new-name"
cfg, err := config.New(config.NoDefaults, attrs)
c.Assert(err, gc.IsNil)
err = env.SetConfig(cfg)
c.Assert(err, gc.NotNil)
c.Check(
err,
gc.ErrorMatches,
`cannot change name from ".*" to "new-name"`)
c.Check(env.Config().Name(), gc.Equals, originalName)
}
func (*environSuite) TestSetConfigClearsStorageAccountKey(c *gc.C) {
env := makeEnviron(c)
env.storageAccountKey = "key-for-previous-config"
attrs := makeAzureConfigMap(c)
attrs["default-series"] = "other"
cfg, err := config.New(config.NoDefaults, attrs)
c.Assert(err, gc.IsNil)
err = env.SetConfig(cfg)
c.Assert(err, gc.IsNil)
c.Check(env.storageAccountKey, gc.Equals, "")
}
func (s *environSuite) TestStateServerInstancesFailsIfNoStateInstances(c *gc.C) {
env := makeEnviron(c)
s.setDummyStorage(c, env)
prefix := env.getEnvPrefix()
service := makeDeployment(env, prefix+"myservice")
patchInstancesResponses(c, prefix, service)
_, err := env.StateServerInstances()
c.Check(err, gc.Equals, environs.ErrNotBootstrapped)
}
func (s *environSuite) TestStateServerInstancesNoLegacy(c *gc.C) {
env := makeEnviron(c)
s.setDummyStorage(c, env)
prefix := env.getEnvPrefix()
service1 := makeDeployment(env, prefix+"myservice1")
service2 := makeDeployment(env, prefix+"myservice2")
service1.Label = base64.StdEncoding.EncodeToString([]byte(stateServerLabel))
service1Role1Name := service1.Deployments[0].RoleList[0].RoleName
service1Role2Name := service1.Deployments[0].RoleList[1].RoleName
instId1 := instance.Id(prefix + "myservice1-" + service1Role1Name)
instId2 := instance.Id(prefix + "myservice1-" + service1Role2Name)
patchInstancesResponses(c, prefix, service1, service2)
instances, err := env.StateServerInstances()
c.Assert(err, gc.IsNil)
c.Assert(instances, jc.SameContents, []instance.Id{instId1, instId2})
}
func (s *environSuite) TestStateServerInstancesOnlyLegacy(c *gc.C) {
env := makeEnviron(c)
s.setDummyStorage(c, env)
prefix := env.getEnvPrefix()
service1 := makeLegacyDeployment(env, prefix+"myservice1")
service2 := makeLegacyDeployment(env, prefix+"myservice2")
instId := instance.Id(service1.ServiceName)
err := common.SaveState(
env.Storage(),
&common.BootstrapState{StateInstances: []instance.Id{instId}},
)
c.Assert(err, gc.IsNil)
patchInstancesResponses(c, prefix, service1, service2)
instances, err := env.StateServerInstances()
c.Assert(err, gc.IsNil)
c.Assert(instances, jc.SameContents, []instance.Id{instId})
}
func (s *environSuite) TestStateServerInstancesSomeLegacy(c *gc.C) {
env := makeEnviron(c)
s.setDummyStorage(c, env)
prefix := env.getEnvPrefix()
service1 := makeLegacyDeployment(env, prefix+"service1")
service2 := makeDeployment(env, prefix+"service2")
service3 := makeLegacyDeployment(env, prefix+"service3")
service4 := makeDeployment(env, prefix+"service4")
service2.Label = base64.StdEncoding.EncodeToString([]byte(stateServerLabel))
instId1 := instance.Id(service1.ServiceName)
service2Role1Name := service2.Deployments[0].RoleList[0].RoleName
service2Role2Name := service2.Deployments[0].RoleList[1].RoleName
instId2 := instance.Id(prefix + "service2-" + service2Role1Name)
instId3 := instance.Id(prefix + "service2-" + service2Role2Name)
err := common.SaveState(
env.Storage(),
&common.BootstrapState{StateInstances: []instance.Id{instId1}},
)
c.Assert(err, gc.IsNil)
patchInstancesResponses(c, prefix, service1, service2, service3, service4)
instances, err := env.StateServerInstances()
c.Assert(err, gc.IsNil)
c.Assert(instances, jc.SameContents, []instance.Id{instId1, instId2, instId3})
}
// parseCreateServiceRequest reconstructs the original CreateHostedService
// request object passed to gwacl's AddHostedService method, based on the
// X509Request which the method issues.
func parseCreateServiceRequest(c *gc.C, request *gwacl.X509Request) *gwacl.CreateHostedService {
body := gwacl.CreateHostedService{}
err := xml.Unmarshal(request.Payload, &body)
c.Assert(err, gc.IsNil)
return &body
}
// getHostedServicePropertiesServiceName extracts the service name parameter
// from the GetHostedServiceProperties request URL.
func getHostedServicePropertiesServiceName(c *gc.C, request *gwacl.X509Request) string {
url, err := url.Parse(request.URL)
c.Assert(err, gc.IsNil)
return path.Base(url.Path)
}
// makeNonAvailabilityResponse simulates a reply to the
// CheckHostedServiceNameAvailability call saying that a name is not available.
func makeNonAvailabilityResponse(c *gc.C) []byte {
errorBody, err := xml.Marshal(gwacl.AvailabilityResponse{
Result: "false",
Reason: "he's a very naughty boy"})
c.Assert(err, gc.IsNil)
return errorBody
}
// makeAvailabilityResponse simulates a reply to the
// CheckHostedServiceNameAvailability call saying that a name is available.
func makeAvailabilityResponse(c *gc.C) []byte {
errorBody, err := xml.Marshal(gwacl.AvailabilityResponse{
Result: "true"})
c.Assert(err, gc.IsNil)
return errorBody
}
func (*environSuite) TestAttemptCreateServiceCreatesService(c *gc.C) {
prefix := "myservice"
affinityGroup := "affinity-group"
responses := []gwacl.DispatcherResponse{
gwacl.NewDispatcherResponse(makeAvailabilityResponse(c), http.StatusOK, nil),
gwacl.NewDispatcherResponse(nil, http.StatusOK, nil),
}
requests := gwacl.PatchManagementAPIResponses(responses)
azure, err := gwacl.NewManagementAPI("subscription", "", "West US")
c.Assert(err, gc.IsNil)
service, err := attemptCreateService(azure, prefix, affinityGroup, "")
c.Assert(err, gc.IsNil)
c.Assert(*requests, gc.HasLen, 2)
body := parseCreateServiceRequest(c, (*requests)[1])
c.Check(body.ServiceName, gc.Equals, service.ServiceName)
c.Check(body.AffinityGroup, gc.Equals, affinityGroup)
c.Check(service.ServiceName, gc.Matches, prefix+".*")
// We specify AffinityGroup, so Location should be empty.
c.Check(service.Location, gc.Equals, "")
}
func (*environSuite) TestAttemptCreateServiceReturnsNilIfNameNotUnique(c *gc.C) {
responses := []gwacl.DispatcherResponse{
gwacl.NewDispatcherResponse(makeNonAvailabilityResponse(c), http.StatusOK, nil),
}
gwacl.PatchManagementAPIResponses(responses)
azure, err := gwacl.NewManagementAPI("subscription", "", "West US")
c.Assert(err, gc.IsNil)
service, err := attemptCreateService(azure, "service", "affinity-group", "")
c.Check(err, gc.IsNil)
c.Check(service, gc.IsNil)
}
func (*environSuite) TestAttemptCreateServicePropagatesOtherFailure(c *gc.C) {
responses := []gwacl.DispatcherResponse{
gwacl.NewDispatcherResponse(makeAvailabilityResponse(c), http.StatusOK, nil),
gwacl.NewDispatcherResponse(nil, http.StatusNotFound, nil),
}
gwacl.PatchManagementAPIResponses(responses)
azure, err := gwacl.NewManagementAPI("subscription", "", "West US")
c.Assert(err, gc.IsNil)
_, err = attemptCreateService(azure, "service", "affinity-group", "")
c.Assert(err, gc.NotNil)
c.Check(err, gc.ErrorMatches, ".*Not Found.*")
}
func (*environSuite) TestNewHostedServiceCreatesService(c *gc.C) {
prefix := "myservice"
affinityGroup := "affinity-group"
responses := []gwacl.DispatcherResponse{
gwacl.NewDispatcherResponse(makeAvailabilityResponse(c), http.StatusOK, nil),
gwacl.NewDispatcherResponse(nil, http.StatusOK, nil),
getAzureServiceResponse(c, gwacl.HostedService{
HostedServiceDescriptor: gwacl.HostedServiceDescriptor{
ServiceName: "anything",
},
}),
}
requests := gwacl.PatchManagementAPIResponses(responses)
azure, err := gwacl.NewManagementAPI("subscription", "", "West US")
c.Assert(err, gc.IsNil)
service, err := newHostedService(azure, prefix, affinityGroup, "")
c.Assert(err, gc.IsNil)
c.Assert(*requests, gc.HasLen, 3)
body := parseCreateServiceRequest(c, (*requests)[1])
requestedServiceName := getHostedServicePropertiesServiceName(c, (*requests)[2])
c.Check(body.ServiceName, gc.Matches, prefix+".*")
c.Check(body.ServiceName, gc.Equals, requestedServiceName)
c.Check(body.AffinityGroup, gc.Equals, affinityGroup)
c.Check(service.ServiceName, gc.Equals, "anything")
c.Check(service.Location, gc.Equals, "")
}
func (*environSuite) TestNewHostedServiceRetriesIfNotUnique(c *gc.C) {
errorBody := makeNonAvailabilityResponse(c)
okBody := makeAvailabilityResponse(c)
// In this scenario, the first two names that we try are already
// taken. The third one is unique though, so we succeed.
responses := []gwacl.DispatcherResponse{
gwacl.NewDispatcherResponse(errorBody, http.StatusOK, nil),
gwacl.NewDispatcherResponse(errorBody, http.StatusOK, nil),
gwacl.NewDispatcherResponse(okBody, http.StatusOK, nil), // name is unique
gwacl.NewDispatcherResponse(nil, http.StatusOK, nil), // create service
getAzureServiceResponse(c, gwacl.HostedService{
HostedServiceDescriptor: gwacl.HostedServiceDescriptor{
ServiceName: "anything",
},
}),
}
requests := gwacl.PatchManagementAPIResponses(responses)
azure, err := gwacl.NewManagementAPI("subscription", "", "West US")
c.Assert(err, gc.IsNil)
service, err := newHostedService(azure, "service", "affinity-group", "")
c.Check(err, gc.IsNil)
c.Assert(*requests, gc.HasLen, 5)
// How many names have been attempted, and how often?
// There is a minute chance that this tries the same name twice, and
// then this test will fail. If that happens, try seeding the
// randomizer with some fixed seed that doens't produce the problem.
attemptedNames := make(map[string]int)
for _, request := range *requests {
// Exit the loop if we hit the request to create the service, it comes
// after the check calls.
if request.Method == "POST" {
break
}
// Name is the last part of the URL from the GET requests that check
// availability.
_, name := path.Split(strings.TrimRight(request.URL, "/"))
attemptedNames[name] += 1
}
// The three attempts we just made all had different service names.
c.Check(attemptedNames, gc.HasLen, 3)
// Once newHostedService succeeds, we get a hosted service with the
// name returned from GetHostedServiceProperties.
c.Check(service.ServiceName, gc.Equals, "anything")
}
func (*environSuite) TestNewHostedServiceFailsIfUnableToFindUniqueName(c *gc.C) {
errorBody := makeNonAvailabilityResponse(c)
responses := []gwacl.DispatcherResponse{}
for counter := 0; counter < 100; counter++ {
responses = append(responses, gwacl.NewDispatcherResponse(errorBody, http.StatusOK, nil))
}
gwacl.PatchManagementAPIResponses(responses)
azure, err := gwacl.NewManagementAPI("subscription", "", "West US")
c.Assert(err, gc.IsNil)
_, err = newHostedService(azure, "service", "affinity-group", "")
c.Assert(err, gc.NotNil)
c.Check(err, gc.ErrorMatches, "could not come up with a unique hosted service name.*")
}
func buildGetServicePropertiesResponses(c *gc.C, services ...*gwacl.HostedService) []gwacl.DispatcherResponse {
responses := make([]gwacl.DispatcherResponse, len(services))
for i, service := range services {
serviceXML, err := service.Serialize()
c.Assert(err, gc.IsNil)
responses[i] = gwacl.NewDispatcherResponse([]byte(serviceXML), http.StatusOK, nil)
}
return responses
}
func buildStatusOKResponses(c *gc.C, n int) []gwacl.DispatcherResponse {
responses := make([]gwacl.DispatcherResponse, n)
for i := range responses {
responses[i] = gwacl.NewDispatcherResponse(nil, http.StatusOK, nil)
}
return responses
}
func makeAzureService(name string) *gwacl.HostedService {
return &gwacl.HostedService{
HostedServiceDescriptor: gwacl.HostedServiceDescriptor{ServiceName: name},
}
}
func makeRole(env *azureEnviron) *gwacl.Role {
size := "Large"
vhd := env.newOSDisk("source-image-name")
userData := "example-user-data"
return env.newRole(size, vhd, userData, false)
}
func makeLegacyDeployment(env *azureEnviron, serviceName string) *gwacl.HostedService {
service := makeAzureService(serviceName)
service.Deployments = []gwacl.Deployment{{
Name: serviceName,
RoleList: []gwacl.Role{*makeRole(env)},
}}
return service
}
func makeDeployment(env *azureEnviron, serviceName string) *gwacl.HostedService {
service := makeAzureService(serviceName)
service.Deployments = []gwacl.Deployment{{
Name: serviceName + "-v2",
RoleList: []gwacl.Role{*makeRole(env), *makeRole(env)},
}}
return service
}
func (s *environSuite) TestStopInstancesDestroysMachines(c *gc.C) {
env := makeEnviron(c)
prefix := env.getEnvPrefix()
service1Name := "service1"
service1 := makeLegacyDeployment(env, prefix+service1Name)
service2Name := "service2"
service2 := makeDeployment(env, prefix+service2Name)
inst1, err := env.getInstance(service1, "")
c.Assert(err, gc.IsNil)
role2Name := service2.Deployments[0].RoleList[0].RoleName
inst2, err := env.getInstance(service2, role2Name)
c.Assert(err, gc.IsNil)
role3Name := service2.Deployments[0].RoleList[1].RoleName
inst3, err := env.getInstance(service2, role3Name)
c.Assert(err, gc.IsNil)
responses := buildGetServicePropertiesResponses(c, service1)
responses = append(responses, buildStatusOKResponses(c, 1)...) // DeleteHostedService
responses = append(responses, buildGetServicePropertiesResponses(c, service2)...)
responses = append(responses, buildStatusOKResponses(c, 1)...) // DeleteHostedService
requests := gwacl.PatchManagementAPIResponses(responses)
err = env.StopInstances(inst1.Id(), inst2.Id(), inst3.Id())
c.Check(err, gc.IsNil)
// One GET and DELETE per service
// (GetHostedServiceProperties and DeleteHostedService).
c.Check(len(*requests), gc.Equals, len(responses))
assertOneRequestMatches(c, *requests, "GET", ".*"+service1Name+".")
assertOneRequestMatches(c, *requests, "GET", ".*"+service2Name+".*")
assertOneRequestMatches(c, *requests, "DELETE", ".*"+service1Name+".*")
assertOneRequestMatches(c, *requests, "DELETE", ".*"+service2Name+".*")
}
func (s *environSuite) TestStopInstancesServiceSubset(c *gc.C) {
env := makeEnviron(c)
service := makeDeployment(env, env.getEnvPrefix()+"service")
role1Name := service.Deployments[0].RoleList[0].RoleName
inst1, err := env.getInstance(service, role1Name)
c.Assert(err, gc.IsNil)
responses := buildGetServicePropertiesResponses(c, service)
responses = append(responses, buildStatusOKResponses(c, 1)...) // DeleteRole
requests := gwacl.PatchManagementAPIResponses(responses)
err = env.StopInstances(inst1.Id())
c.Check(err, gc.IsNil)
// One GET for the service, and one DELETE for the role.
// The service isn't deleted because it has two roles,
// and only one is being deleted.
c.Check(len(*requests), gc.Equals, len(responses))
assertOneRequestMatches(c, *requests, "GET", ".*"+service.ServiceName+".")
assertOneRequestMatches(c, *requests, "DELETE", ".*"+role1Name+".*")
}
func (s *environSuite) TestStopInstancesWhenStoppingMachinesFails(c *gc.C) {
env := makeEnviron(c)
prefix := env.getEnvPrefix()
service1 := makeDeployment(env, prefix+"service1")
service2 := makeDeployment(env, prefix+"service2")
service1Role1Name := service1.Deployments[0].RoleList[0].RoleName
inst1, err := env.getInstance(service1, service1Role1Name)
c.Assert(err, gc.IsNil)
service2Role1Name := service2.Deployments[0].RoleList[0].RoleName
inst2, err := env.getInstance(service2, service2Role1Name)
c.Assert(err, gc.IsNil)
responses := buildGetServicePropertiesResponses(c, service1)
// Failed to delete one of the services. This will cause StopInstances to stop
// immediately.
responses = append(responses, gwacl.NewDispatcherResponse(nil, http.StatusConflict, nil))
requests := gwacl.PatchManagementAPIResponses(responses)
err = env.StopInstances(inst1.Id(), inst2.Id())
c.Check(err, gc.ErrorMatches, ".*Conflict.*")
c.Check(len(*requests), gc.Equals, len(responses))
assertOneRequestMatches(c, *requests, "GET", ".*"+service1.ServiceName+".*")
assertOneRequestMatches(c, *requests, "DELETE", service1.ServiceName)
}
func (s *environSuite) TestStopInstancesWithZeroInstance(c *gc.C) {
env := makeEnviron(c)
err := env.StopInstances()
c.Check(err, gc.IsNil)
}
// getVnetCleanupResponse returns the response
// that a fake http server should return when gwacl's
// RemoveVirtualNetworkSite() is called.
func getVnetCleanupResponse(c *gc.C) gwacl.DispatcherResponse {
existingConfig := &gwacl.NetworkConfiguration{
XMLNS: gwacl.XMLNS_NC,
VirtualNetworkSites: nil,
}
body, err := existingConfig.Serialize()
c.Assert(err, gc.IsNil)
return gwacl.NewDispatcherResponse([]byte(body), http.StatusOK, nil)
}
func (s *environSuite) TestDestroyDoesNotCleanStorageIfError(c *gc.C) {
env := makeEnviron(c)
s.setDummyStorage(c, env)
// Populate storage.
err := env.Storage().Put("anything", strings.NewReader(""), 0)
c.Assert(err, gc.IsNil)
responses := []gwacl.DispatcherResponse{
gwacl.NewDispatcherResponse(nil, http.StatusBadRequest, nil),
}
gwacl.PatchManagementAPIResponses(responses)
err = env.Destroy()
c.Check(err, gc.NotNil)
files, err := storage.List(env.Storage(), "")
c.Assert(err, gc.IsNil)
c.Check(files, gc.DeepEquals, []string{"anything"})
}
func (s *environSuite) TestDestroyCleansUpStorage(c *gc.C) {
env := makeEnviron(c)
s.setDummyStorage(c, env)
// Populate storage.
err := env.Storage().Put("anything", strings.NewReader(""), 0)
c.Assert(err, gc.IsNil)
responses := getAzureServiceListResponse(c)
responses = append(responses, getVnetCleanupResponse(c))
responses = append(responses, buildStatusOKResponses(c, 1)...) // DeleteAffinityGroup
gwacl.PatchManagementAPIResponses(responses)
err = env.Destroy()
c.Check(err, gc.IsNil)
files, err := storage.List(env.Storage(), "")
c.Assert(err, gc.IsNil)
c.Check(files, gc.HasLen, 0)
}
func (s *environSuite) TestDestroyDeletesVirtualNetworkAndAffinityGroup(c *gc.C) {
env := makeEnviron(c)
s.setDummyStorage(c, env)
responses := getAzureServiceListResponse(c)
// Prepare a configuration with a single virtual network.
existingConfig := &gwacl.NetworkConfiguration{
XMLNS: gwacl.XMLNS_NC,
VirtualNetworkSites: &[]gwacl.VirtualNetworkSite{
{Name: env.getVirtualNetworkName()},
},
}
body, err := existingConfig.Serialize()
c.Assert(err, gc.IsNil)
cleanupResponses := []gwacl.DispatcherResponse{
// Return existing configuration.
gwacl.NewDispatcherResponse([]byte(body), http.StatusOK, nil),
// Accept upload of new configuration.
gwacl.NewDispatcherResponse(nil, http.StatusOK, nil),
// Accept deletion of affinity group.
gwacl.NewDispatcherResponse(nil, http.StatusOK, nil),
}
responses = append(responses, cleanupResponses...)
requests := gwacl.PatchManagementAPIResponses(responses)
err = env.Destroy()
c.Check(err, gc.IsNil)
c.Assert(*requests, gc.HasLen, 4)
// One request to get the network configuration.
getRequest := (*requests)[1]
c.Check(getRequest.Method, gc.Equals, "GET")
c.Check(strings.HasSuffix(getRequest.URL, "services/networking/media"), gc.Equals, true)
// One request to upload the new version of the network configuration.
putRequest := (*requests)[2]
c.Check(putRequest.Method, gc.Equals, "PUT")