mockclients.go

package armhelpers

import (
	"bytes"
	"errors"
	"fmt"
	"io/ioutil"
	"net/http"
	"time"

	"github.com/Azure/azure-sdk-for-go/arm/authorization"
	"github.com/Azure/azure-sdk-for-go/arm/compute"
	"github.com/Azure/azure-sdk-for-go/arm/disk"
	"github.com/Azure/azure-sdk-for-go/arm/graphrbac"
	"github.com/Azure/azure-sdk-for-go/arm/resources/resources"
	"github.com/Azure/go-autorest/autorest"
	log "github.com/sirupsen/logrus"
	"k8s.io/api/core/v1"
)

//MockACSEngineClient is an implementation of ACSEngineClient where all requests error out
type MockACSEngineClient struct {
	FailDeployTemplate                    bool
	FailDeployTemplateQuota               bool
	FailDeployTemplateConflict            bool
	FailDeployTemplateWithProperties      bool
	FailEnsureResourceGroup               bool
	FailListVirtualMachines               bool
	FailListVirtualMachineScaleSets       bool
	FailGetVirtualMachine                 bool
	FailDeleteVirtualMachine              bool
	FailDeleteVirtualMachineScaleSetVM    bool
	FailSetVirtualMachineScaleSetCapacity bool
	FailListVirtualMachineScaleSetVMs     bool
	FailGetStorageClient                  bool
	FailDeleteNetworkInterface            bool
	FailGetKubernetesClient               bool
	FailListProviders                     bool
	ShouldSupportVMIdentity               bool
	FailDeleteRoleAssignment              bool
	MockKubernetesClient                  *MockKubernetesClient
}

//MockStorageClient mock implementation of StorageClient
type MockStorageClient struct{}

//MockKubernetesClient mock implementation of KubernetesClient
type MockKubernetesClient struct {
	FailListPods          bool
	FailGetNode           bool
	UpdateNodeFunc        func(*v1.Node) (*v1.Node, error)
	FailUpdateNode        bool
	FailDeleteNode        bool
	FailSupportEviction   bool
	FailDeletePod         bool
	FailEvictPod          bool
	FailWaitForDelete     bool
	ShouldSupportEviction bool
	PodsList              *v1.PodList
}

//ListPods returns all Pods running on the passed in node
func (mkc *MockKubernetesClient) ListPods(node *v1.Node) (*v1.PodList, error) {
	if mkc.FailListPods {
		return nil, errors.New("ListPods failed")
	}
	if mkc.PodsList != nil {
		return mkc.PodsList, nil
	}
	return &v1.PodList{}, nil
}

//GetNode returns details about node with passed in name
func (mkc *MockKubernetesClient) GetNode(name string) (*v1.Node, error) {
	if mkc.FailGetNode {
		return nil, errors.New("GetNode failed")
	}
	node := &v1.Node{}
	node.Status.Conditions = append(node.Status.Conditions, v1.NodeCondition{Type: v1.NodeReady, Status: v1.ConditionTrue})
	return node, nil
}

//UpdateNode updates the node in the api server with the passed in info
func (mkc *MockKubernetesClient) UpdateNode(node *v1.Node) (*v1.Node, error) {
	if mkc.UpdateNodeFunc != nil {
		return mkc.UpdateNodeFunc(node)
	}
	if mkc.FailUpdateNode {
		return nil, errors.New("UpdateNode failed")
	}
	return node, nil
}

//DeleteNode deregisters node in the api server
func (mkc *MockKubernetesClient) DeleteNode(name string) error {
	if mkc.FailDeleteNode {
		return errors.New("DeleteNode failed")
	}
	return nil
}

//SupportEviction queries the api server to discover if it supports eviction, and returns supported type if it is supported
func (mkc *MockKubernetesClient) SupportEviction() (string, error) {
	if mkc.FailSupportEviction {
		return "", errors.New("SupportEviction failed")
	}
	if mkc.ShouldSupportEviction {
		return "version", nil
	}
	return "", nil
}

//DeletePod deletes the passed in pod
func (mkc *MockKubernetesClient) DeletePod(pod *v1.Pod) error {
	if mkc.FailDeletePod {
		return errors.New("DeletePod failed")
	}
	return nil
}

//EvictPod evicts the passed in pod using the passed in api version
func (mkc *MockKubernetesClient) EvictPod(pod *v1.Pod, policyGroupVersion string) error {
	if mkc.FailEvictPod {
		return errors.New("EvictPod failed")
	}
	return nil
}

//WaitForDelete waits until all pods are deleted. Returns all pods not deleted and an error on failure
func (mkc *MockKubernetesClient) WaitForDelete(logger *log.Entry, pods []v1.Pod, usingEviction bool) ([]v1.Pod, error) {
	if mkc.FailWaitForDelete {
		return nil, errors.New("WaitForDelete failed")
	}
	return []v1.Pod{}, nil
}

//DeleteBlob mock
func (msc *MockStorageClient) DeleteBlob(container, blob string) error {
	return nil
}

//AddAcceptLanguages mock
func (mc *MockACSEngineClient) AddAcceptLanguages(languages []string) {}

//DeployTemplate mock
func (mc *MockACSEngineClient) DeployTemplate(resourceGroup, name string, template, parameters map[string]interface{}, cancel <-chan struct{}) (*resources.DeploymentExtended, error) {
	switch {
	case mc.FailDeployTemplate:
		return nil, errors.New("DeployTemplate failed")

	case mc.FailDeployTemplateQuota:
		errmsg := `resources.DeploymentsClient#CreateOrUpdate: Failure responding to request: StatusCode=400 -- Original Error: autorest/azure: Service returned an error.`
		resp := `{
"error":{
	"code":"InvalidTemplateDeployment",
	"message":"The template deployment is not valid according to the validation procedure. The tracking id is 'b5bd7d6b-fddf-4ec3-a3b0-ce285a48bd31'. See inner errors for details. Please see https://aka.ms/arm-deploy for usage details.",
	"details":[{
		"code":"QuotaExceeded",
		"message":"Operation results in exceeding quota limits of Core. Maximum allowed: 10, Current in use: 10, Additional requested: 2. Please read more about quota increase at http://aka.ms/corequotaincrease."
}]}}`

		return &resources.DeploymentExtended{
				Response: autorest.Response{
					Response: &http.Response{
						Status:     "400 Bad Request",
						StatusCode: 400,
						Body:       ioutil.NopCloser(bytes.NewReader([]byte(resp))),
					}}},
			errors.New(errmsg)

	case mc.FailDeployTemplateConflict:
		errmsg := `resources.DeploymentsClient#CreateOrUpdate: Failure sending request: StatusCode=200 -- Original Error: Long running operation terminated with status 'Failed': Code="DeploymentFailed" Message="At least one resource deployment operation failed. Please list deployment operations for details. Please see https://aka.ms/arm-debug for usage details.`
		resp := `{
"status":"Failed",
"error":{
	"code":"DeploymentFailed",
	"message":"At least one resource deployment operation failed. Please list deployment operations for details. Please see https://aka.ms/arm-debug for usage details.",
	"details":[{
		"code":"Conflict",
		"message":"{\r\n  \"error\": {\r\n    \"code\": \"PropertyChangeNotAllowed\",\r\n    \"target\": \"dataDisk.createOption\",\r\n    \"message\": \"Changing property 'dataDisk.createOption' is not allowed.\"\r\n  }\r\n}"
}]}}`
		return &resources.DeploymentExtended{
				Response: autorest.Response{
					Response: &http.Response{
						Status:     "200 OK",
						StatusCode: 200,
						Body:       ioutil.NopCloser(bytes.NewReader([]byte(resp))),
					}}},
			errors.New(errmsg)

	case mc.FailDeployTemplateWithProperties:
		errmsg := `resources.DeploymentsClient#CreateOrUpdate: Failure sending request: StatusCode=200 -- Original Error: Long running operation terminated with status 'Failed': Code="DeploymentFailed" Message="At least one resource deployment operation failed. Please list deployment operations for details. Please see https://aka.ms/arm-debug for usage details.`
		resp := `{
"status":"Failed",
"error":{
	"code":"DeploymentFailed",
	"message":"At least one resource deployment operation failed. Please list deployment operations for details. Please see https://aka.ms/arm-debug for usage details.",
	"details":[{
		"code":"Conflict",
		"message":"{\r\n  \"error\": {\r\n    \"code\": \"PropertyChangeNotAllowed\",\r\n    \"target\": \"dataDisk.createOption\",\r\n    \"message\": \"Changing property 'dataDisk.createOption' is not allowed.\"\r\n  }\r\n}"
}]}}`
		provisioningState := "Failed"
		return &resources.DeploymentExtended{
				Response: autorest.Response{
					Response: &http.Response{
						Status:     "200 OK",
						StatusCode: 200,
						Body:       ioutil.NopCloser(bytes.NewReader([]byte(resp))),
					}},
				Properties: &resources.DeploymentPropertiesExtended{
					ProvisioningState: &provisioningState,
				}},
			errors.New(errmsg)
	default:
		return nil, nil
	}
}

//EnsureResourceGroup mock
func (mc *MockACSEngineClient) EnsureResourceGroup(resourceGroup, location string, managedBy *string) (*resources.Group, error) {
	if mc.FailEnsureResourceGroup {
		return nil, errors.New("EnsureResourceGroup failed")
	}

	return nil, nil
}

//ListVirtualMachines mock
func (mc *MockACSEngineClient) ListVirtualMachines(resourceGroup string) (compute.VirtualMachineListResult, error) {
	if mc.FailListVirtualMachines {
		return compute.VirtualMachineListResult{}, errors.New("ListVirtualMachines failed")
	}

	vm1Name := "k8s-agentpool1-12345678-0"

	creationSourceString := "creationSource"
	orchestratorString := "orchestrator"
	resourceNameSuffixString := "resourceNameSuffix"
	poolnameString := "poolName"

	creationSource := "acsengine-k8s-agentpool1-12345678-0"
	orchestrator := "Kubernetes:1.6.9"
	resourceNameSuffix := "12345678"
	poolname := "agentpool1"

	tags := map[string]*string{
		creationSourceString:     &creationSource,
		orchestratorString:       &orchestrator,
		resourceNameSuffixString: &resourceNameSuffix,
		poolnameString:           &poolname,
	}

	vm1 := compute.VirtualMachine{
		Name: &vm1Name,
		Tags: &tags,
		VirtualMachineProperties: &compute.VirtualMachineProperties{
			StorageProfile: &compute.StorageProfile{
				OsDisk: &compute.OSDisk{
					Vhd: &compute.VirtualHardDisk{
						URI: &validOSDiskResourceName},
				},
			},
			NetworkProfile: &compute.NetworkProfile{
				NetworkInterfaces: &[]compute.NetworkInterfaceReference{
					{
						ID: &validNicResourceName,
					},
				},
			},
		},
	}

	vmr := compute.VirtualMachineListResult{}
	vmr.Value = &[]compute.VirtualMachine{vm1}

	return vmr, nil
}

//ListVirtualMachineScaleSets mock
func (mc *MockACSEngineClient) ListVirtualMachineScaleSets(resourceGroup string) (compute.VirtualMachineScaleSetListResult, error) {
	if mc.FailListVirtualMachineScaleSets {
		return compute.VirtualMachineScaleSetListResult{}, errors.New("ListVirtualMachines failed")
	}

	return compute.VirtualMachineScaleSetListResult{}, nil
}

//GetVirtualMachine mock
func (mc *MockACSEngineClient) GetVirtualMachine(resourceGroup, name string) (compute.VirtualMachine, error) {
	if mc.FailGetVirtualMachine {
		return compute.VirtualMachine{}, errors.New("GetVirtualMachine failed")
	}

	vm1Name := "k8s-agentpool1-12345678-0"

	creationSourceString := "creationSource"
	orchestratorString := "orchestrator"
	resourceNameSuffixString := "resourceNameSuffix"
	poolnameString := "poolName"

	creationSource := "acsengine-k8s-agentpool1-12345678-0"
	orchestrator := "Kubernetes:1.6.9"
	resourceNameSuffix := "12345678"
	poolname := "agentpool1"

	principalID := "00000000-1111-2222-3333-444444444444"

	tags := map[string]*string{
		creationSourceString:     &creationSource,
		orchestratorString:       &orchestrator,
		resourceNameSuffixString: &resourceNameSuffix,
		poolnameString:           &poolname,
	}

	var vmIdentity *compute.VirtualMachineIdentity
	if mc.ShouldSupportVMIdentity {
		vmIdentity = &compute.VirtualMachineIdentity{PrincipalID: &principalID}
	}

	return compute.VirtualMachine{
		Name:     &vm1Name,
		Tags:     &tags,
		Identity: vmIdentity,
		VirtualMachineProperties: &compute.VirtualMachineProperties{
			StorageProfile: &compute.StorageProfile{
				OsDisk: &compute.OSDisk{
					Vhd: &compute.VirtualHardDisk{
						URI: &validOSDiskResourceName},
				},
			},
			NetworkProfile: &compute.NetworkProfile{
				NetworkInterfaces: &[]compute.NetworkInterfaceReference{
					{
						ID: &validNicResourceName,
					},
				},
			},
		},
	}, nil
}

//DeleteVirtualMachine mock
func (mc *MockACSEngineClient) DeleteVirtualMachine(resourceGroup, name string, cancel <-chan struct{}) (<-chan compute.OperationStatusResponse, <-chan error) {
	if mc.FailDeleteVirtualMachine {
		errChan := make(chan error)
		respChan := make(chan compute.OperationStatusResponse)
		go func() {
			defer func() {
				close(errChan)
			}()
			defer func() {
				close(respChan)
			}()
			errChan <- errors.New("DeleteVirtualMachine failed")
		}()
		return respChan, errChan
	}

	errChan := make(chan error)
	respChan := make(chan compute.OperationStatusResponse)
	go func() {
		defer func() {
			close(errChan)
		}()
		defer func() {
			close(respChan)
		}()
		errChan <- nil
		respChan <- compute.OperationStatusResponse{}
	}()
	return respChan, errChan
}

//DeleteVirtualMachineScaleSetVM mock
func (mc *MockACSEngineClient) DeleteVirtualMachineScaleSetVM(resourceGroup, virtualMachineScaleSet, instanceID string, cancel <-chan struct{}) (<-chan compute.OperationStatusResponse, <-chan error) {
	if mc.FailDeleteVirtualMachineScaleSetVM {
		errChan := make(chan error)
		respChan := make(chan compute.OperationStatusResponse)
		go func() {
			defer func() {
				close(errChan)
			}()
			defer func() {
				close(respChan)
			}()
			errChan <- errors.New("DeleteVirtualMachineScaleSetVM failed")
		}()
		return respChan, errChan
	}

	errChan := make(chan error)
	respChan := make(chan compute.OperationStatusResponse)
	go func() {
		defer func() {
			close(errChan)
		}()
		defer func() {
			close(respChan)
		}()
		errChan <- nil
		respChan <- compute.OperationStatusResponse{}
	}()
	return respChan, errChan
}

//SetVirtualMachineScaleSetCapacity mock
func (mc *MockACSEngineClient) SetVirtualMachineScaleSetCapacity(resourceGroup, virtualMachineScaleSet string, sku compute.Sku, location string, cancel <-chan struct{}) (<-chan compute.VirtualMachineScaleSet, <-chan error) {
	if mc.FailSetVirtualMachineScaleSetCapacity {
		errChan := make(chan error)
		respChan := make(chan compute.VirtualMachineScaleSet)
		go func() {
			defer func() {
				close(errChan)
			}()
			defer func() {
				close(respChan)
			}()
			errChan <- errors.New("SetVirtualMachineScaleSetCapacity failed")
		}()
		return respChan, errChan
	}

	errChan := make(chan error)
	respChan := make(chan compute.VirtualMachineScaleSet)
	go func() {
		defer func() {
			close(errChan)
		}()
		defer func() {
			close(respChan)
		}()
		errChan <- nil
		respChan <- compute.VirtualMachineScaleSet{}
	}()
	return respChan, errChan
}

//ListVirtualMachineScaleSetVMs mock
func (mc *MockACSEngineClient) ListVirtualMachineScaleSetVMs(resourceGroup, virtualMachineScaleSet string) (compute.VirtualMachineScaleSetVMListResult, error) {
	if mc.FailDeleteVirtualMachineScaleSetVM {
		return compute.VirtualMachineScaleSetVMListResult{}, errors.New("DeleteVirtualMachineScaleSetVM failed")
	}

	return compute.VirtualMachineScaleSetVMListResult{}, nil
}

//GetStorageClient mock
func (mc *MockACSEngineClient) GetStorageClient(resourceGroup, accountName string) (ACSStorageClient, error) {
	if mc.FailGetStorageClient {
		return nil, errors.New("GetStorageClient failed")
	}

	return &MockStorageClient{}, nil
}

//DeleteNetworkInterface mock
func (mc *MockACSEngineClient) DeleteNetworkInterface(resourceGroup, nicName string, cancel <-chan struct{}) (<-chan autorest.Response, <-chan error) {
	if mc.FailDeleteNetworkInterface {
		errChan := make(chan error)
		respChan := make(chan autorest.Response)
		go func() {
			defer func() {
				close(errChan)
			}()
			defer func() {
				close(respChan)
			}()
			errChan <- errors.New("DeleteNetworkInterface failed")
		}()
		return respChan, errChan
	}

	errChan := make(chan error)
	respChan := make(chan autorest.Response)
	go func() {
		defer func() {
			close(errChan)
		}()
		defer func() {
			close(respChan)
		}()
		errChan <- nil
		respChan <- autorest.Response{}
	}()
	return respChan, errChan
}

var validOSDiskResourceName = "https://00k71r4u927seqiagnt0.blob.core.windows.net/osdisk/k8s-agentpool1-12345678-0-osdisk.vhd"
var validNicResourceName = "/subscriptions/DEC923E3-1EF1-4745-9516-37906D56DEC4/resourceGroups/acsK8sTest/providers/Microsoft.Network/networkInterfaces/k8s-agent-12345678-nic-0"

// Active Directory
// Mocks

// Graph Mocks

// CreateGraphApplication creates an application via the graphrbac client
func (mc *MockACSEngineClient) CreateGraphApplication(applicationCreateParameters graphrbac.ApplicationCreateParameters) (graphrbac.Application, error) {
	return graphrbac.Application{}, nil
}

// CreateGraphPrincipal creates a service principal via the graphrbac client
func (mc *MockACSEngineClient) CreateGraphPrincipal(servicePrincipalCreateParameters graphrbac.ServicePrincipalCreateParameters) (graphrbac.ServicePrincipal, error) {
	return graphrbac.ServicePrincipal{}, nil
}

// CreateApp is a simpler method for creating an application
func (mc *MockACSEngineClient) CreateApp(applicationName, applicationURL string, replyURLs *[]string, requiredResourceAccess *[]graphrbac.RequiredResourceAccess) (applicationID, servicePrincipalObjectID, secret string, err error) {
	return "app-id", "client-id", "client-secret", nil
}

// RBAC Mocks

// CreateRoleAssignment creates a role assignment via the authorization client
func (mc *MockACSEngineClient) CreateRoleAssignment(scope string, roleAssignmentName string, parameters authorization.RoleAssignmentCreateParameters) (authorization.RoleAssignment, error) {
	return authorization.RoleAssignment{}, nil
}

// CreateRoleAssignmentSimple is a wrapper around RoleAssignmentsClient.Create
func (mc *MockACSEngineClient) CreateRoleAssignmentSimple(applicationID, roleID string) error {
	return nil
}

// DeleteManagedDisk is a wrapper around disksClient.Delete
func (mc *MockACSEngineClient) DeleteManagedDisk(resourceGroupName string, diskName string, cancel <-chan struct{}) (<-chan disk.OperationStatusResponse, <-chan error) {
	errChan := make(chan error)
	respChan := make(chan disk.OperationStatusResponse)
	go func() {
		defer func() {
			close(errChan)
		}()
		defer func() {
			close(respChan)
		}()
		errChan <- nil
		respChan <- disk.OperationStatusResponse{}
	}()
	return respChan, errChan
}

// ListManagedDisksByResourceGroup is a wrapper around disksClient.ListManagedDisksByResourceGroup
func (mc *MockACSEngineClient) ListManagedDisksByResourceGroup(resourceGroupName string) (result disk.ListType, err error) {
	return disk.ListType{}, nil
}

//GetKubernetesClient mock
func (mc *MockACSEngineClient) GetKubernetesClient(masterURL, kubeConfig string, interval, timeout time.Duration) (KubernetesClient, error) {
	if mc.FailGetKubernetesClient {
		return nil, errors.New("GetKubernetesClient failed")
	}

	if mc.MockKubernetesClient == nil {
		mc.MockKubernetesClient = &MockKubernetesClient{}
	}
	return mc.MockKubernetesClient, nil
}

// ListProviders mock
func (mc *MockACSEngineClient) ListProviders() (resources.ProviderListResult, error) {
	if mc.FailListProviders {
		return resources.ProviderListResult{}, errors.New("ListProviders failed")
	}

	return resources.ProviderListResult{}, nil
}

// ListDeploymentOperations gets all deployments operations for a deployment.
func (mc *MockACSEngineClient) ListDeploymentOperations(resourceGroupName string, deploymentName string, top *int32) (result resources.DeploymentOperationsListResult, err error) {
	resp := `{
 "properties": {
   "provisioningState":"Failed",
   "correlationId":"d5062e45-6e9f-4fd3-a0a0-6b2c56b15757",
   "error":{
     "code":"DeploymentFailed","message":"At least one resource deployment operation failed. Please list deployment operations for details. Please see http://aka.ms/arm-debug for usage details.",
     "details":[{"code":"Conflict","message":"{\r\n  \"error\": {\r\n    \"message\": \"Conflict\",\r\n    \"code\": \"Conflict\"\r\n  }\r\n}"}]
   }  
 }
}`

	provisioningState := "Failed"
	id := "00000000"
	operationID := "d5062e45-6e9f-4fd3-a0a0-6b2c56b15757"
	nextLink := fmt.Sprintf("https://management.azure.com/subscriptions/11111/resourcegroups/%s/deployments/%s/operations?$top=%s&api-version=2018-02-01", resourceGroupName, deploymentName, "5")
	return resources.DeploymentOperationsListResult{
		Response: autorest.Response{
			Response: &http.Response{
				Status:     "200 OK",
				StatusCode: 200,
				Body:       ioutil.NopCloser(bytes.NewReader([]byte(resp))),
			},
		},
		Value: &[]resources.DeploymentOperation{
			{
				ID:          &id,
				OperationID: &operationID,
				Properties: &resources.DeploymentOperationProperties{
					ProvisioningState: &provisioningState,
				},
			},
		},
		NextLink: &nextLink,
	}, nil
}

// ListDeploymentOperationsNextResults retrieves the next set of results, if any.
func (mc *MockACSEngineClient) ListDeploymentOperationsNextResults(lastResults resources.DeploymentOperationsListResult) (result resources.DeploymentOperationsListResult, err error) {
	return resources.DeploymentOperationsListResult{}, nil
}

// DeleteRoleAssignmentByID deletes a roleAssignment via its unique identifier
func (mc *MockACSEngineClient) DeleteRoleAssignmentByID(roleAssignmentID string) (authorization.RoleAssignment, error) {
	if mc.FailDeleteRoleAssignment {
		return authorization.RoleAssignment{}, errors.New("DeleteRoleAssignmentByID failed")
	}

	return authorization.RoleAssignment{}, nil
}

// ListRoleAssignmentsForPrincipal (e.g. a VM) via the scope and the unique identifier of the principal
func (mc *MockACSEngineClient) ListRoleAssignmentsForPrincipal(scope string, principalID string) (authorization.RoleAssignmentListResult, error) {
	roleAssignments := []authorization.RoleAssignment{}

	if mc.ShouldSupportVMIdentity {
		var assignmentID = "role-assignment-id"
		var assignment = authorization.RoleAssignment{
			ID: &assignmentID}
		roleAssignments = append(roleAssignments, assignment)
	}

	return authorization.RoleAssignmentListResult{
		Value: &roleAssignments}, nil
}