github.com/rahart/packer@v0.12.2-0.20161229105310-282bb6ad370f/builder/azure/arm/azure_client.go (about)

     1  // Copyright (c) Microsoft Corporation. All rights reserved.
     2  // Licensed under the MIT License. See the LICENSE file in builder/azure for license information.
     3  
     4  package arm
     5  
     6  import (
     7  	"encoding/json"
     8  	"fmt"
     9  	"math"
    10  	"net/http"
    11  	"net/url"
    12  	"os"
    13  	"strconv"
    14  
    15  	"github.com/Azure/azure-sdk-for-go/arm/compute"
    16  	"github.com/Azure/azure-sdk-for-go/arm/network"
    17  	"github.com/Azure/azure-sdk-for-go/arm/resources/resources"
    18  	armStorage "github.com/Azure/azure-sdk-for-go/arm/storage"
    19  	"github.com/Azure/azure-sdk-for-go/storage"
    20  	"github.com/Azure/go-autorest/autorest"
    21  	"github.com/Azure/go-autorest/autorest/azure"
    22  	"github.com/mitchellh/packer/builder/azure/common"
    23  	"github.com/mitchellh/packer/version"
    24  )
    25  
    26  const (
    27  	EnvPackerLogAzureMaxLen = "PACKER_LOG_AZURE_MAXLEN"
    28  )
    29  
    30  var (
    31  	packerUserAgent = fmt.Sprintf(";packer/%s", version.FormattedVersion())
    32  )
    33  
    34  type AzureClient struct {
    35  	storage.BlobStorageClient
    36  	resources.DeploymentsClient
    37  	resources.GroupsClient
    38  	network.PublicIPAddressesClient
    39  	network.InterfacesClient
    40  	network.SubnetsClient
    41  	network.VirtualNetworksClient
    42  	compute.VirtualMachinesClient
    43  	common.VaultClient
    44  	armStorage.AccountsClient
    45  
    46  	InspectorMaxLength int
    47  	Template           *CaptureTemplate
    48  }
    49  
    50  func getCaptureResponse(body string) *CaptureTemplate {
    51  	var operation CaptureOperation
    52  	err := json.Unmarshal([]byte(body), &operation)
    53  	if err != nil {
    54  		return nil
    55  	}
    56  
    57  	if operation.Properties != nil && operation.Properties.Output != nil {
    58  		return operation.Properties.Output
    59  	}
    60  
    61  	return nil
    62  }
    63  
    64  // HACK(chrboum): This method is a hack.  It was written to work around this issue
    65  // (https://github.com/Azure/azure-sdk-for-go/issues/307) and to an extent this
    66  // issue (https://github.com/Azure/azure-rest-api-specs/issues/188).
    67  //
    68  // Capturing a VM is a long running operation that requires polling.  There are
    69  // couple different forms of polling, and the end result of a poll operation is
    70  // discarded by the SDK.  It is expected that any discarded data can be re-fetched,
    71  // so discarding it has minimal impact.  Unfortunately, there is no way to re-fetch
    72  // the template returned by a capture call that I am aware of.
    73  //
    74  // If the second issue were fixed the VM ID would be included when GET'ing a VM.  The
    75  // VM ID could be used to locate the captured VHD, and captured template.
    76  // Unfortunately, the VM ID is not included so this method cannot be used either.
    77  //
    78  // This code captures the template and saves it to the client (the AzureClient type).
    79  // It expects that the capture API is called only once, or rather you only care that the
    80  // last call's value is important because subsequent requests are not persisted.  There
    81  // is no care given to multiple threads writing this value because for our use case
    82  // it does not matter.
    83  func templateCapture(client *AzureClient) autorest.RespondDecorator {
    84  	return func(r autorest.Responder) autorest.Responder {
    85  		return autorest.ResponderFunc(func(resp *http.Response) error {
    86  			body, bodyString := handleBody(resp.Body, math.MaxInt64)
    87  			resp.Body = body
    88  
    89  			captureTemplate := getCaptureResponse(bodyString)
    90  			if captureTemplate != nil {
    91  				client.Template = captureTemplate
    92  			}
    93  
    94  			return r.Respond(resp)
    95  		})
    96  	}
    97  }
    98  
    99  // WAITING(chrboum): I have logged https://github.com/Azure/azure-sdk-for-go/issues/311 to get this
   100  // method included in the SDK.  It has been accepted, and I'll cut over to the official way
   101  // once it ships.
   102  func byConcatDecorators(decorators ...autorest.RespondDecorator) autorest.RespondDecorator {
   103  	return func(r autorest.Responder) autorest.Responder {
   104  		return autorest.DecorateResponder(r, decorators...)
   105  	}
   106  }
   107  
   108  func NewAzureClient(subscriptionID, resourceGroupName, storageAccountName string,
   109  	cloud *azure.Environment,
   110  	servicePrincipalToken, servicePrincipalTokenVault *azure.ServicePrincipalToken) (*AzureClient, error) {
   111  
   112  	var azureClient = &AzureClient{}
   113  
   114  	maxlen := getInspectorMaxLength()
   115  
   116  	azureClient.DeploymentsClient = resources.NewDeploymentsClientWithBaseURI(cloud.ResourceManagerEndpoint, subscriptionID)
   117  	azureClient.DeploymentsClient.Authorizer = servicePrincipalToken
   118  	azureClient.DeploymentsClient.RequestInspector = withInspection(maxlen)
   119  	azureClient.DeploymentsClient.ResponseInspector = byInspecting(maxlen)
   120  	azureClient.DeploymentsClient.UserAgent += packerUserAgent
   121  
   122  	azureClient.GroupsClient = resources.NewGroupsClientWithBaseURI(cloud.ResourceManagerEndpoint, subscriptionID)
   123  	azureClient.GroupsClient.Authorizer = servicePrincipalToken
   124  	azureClient.GroupsClient.RequestInspector = withInspection(maxlen)
   125  	azureClient.GroupsClient.ResponseInspector = byInspecting(maxlen)
   126  	azureClient.GroupsClient.UserAgent += packerUserAgent
   127  
   128  	azureClient.InterfacesClient = network.NewInterfacesClientWithBaseURI(cloud.ResourceManagerEndpoint, subscriptionID)
   129  	azureClient.InterfacesClient.Authorizer = servicePrincipalToken
   130  	azureClient.InterfacesClient.RequestInspector = withInspection(maxlen)
   131  	azureClient.InterfacesClient.ResponseInspector = byInspecting(maxlen)
   132  	azureClient.InterfacesClient.UserAgent += packerUserAgent
   133  
   134  	azureClient.SubnetsClient = network.NewSubnetsClientWithBaseURI(cloud.ResourceManagerEndpoint, subscriptionID)
   135  	azureClient.SubnetsClient.Authorizer = servicePrincipalToken
   136  	azureClient.SubnetsClient.RequestInspector = withInspection(maxlen)
   137  	azureClient.SubnetsClient.ResponseInspector = byInspecting(maxlen)
   138  	azureClient.SubnetsClient.UserAgent += packerUserAgent
   139  
   140  	azureClient.VirtualNetworksClient = network.NewVirtualNetworksClientWithBaseURI(cloud.ResourceManagerEndpoint, subscriptionID)
   141  	azureClient.VirtualNetworksClient.Authorizer = servicePrincipalToken
   142  	azureClient.VirtualNetworksClient.RequestInspector = withInspection(maxlen)
   143  	azureClient.VirtualNetworksClient.ResponseInspector = byInspecting(maxlen)
   144  	azureClient.VirtualNetworksClient.UserAgent += packerUserAgent
   145  
   146  	azureClient.PublicIPAddressesClient = network.NewPublicIPAddressesClientWithBaseURI(cloud.ResourceManagerEndpoint, subscriptionID)
   147  	azureClient.PublicIPAddressesClient.Authorizer = servicePrincipalToken
   148  	azureClient.PublicIPAddressesClient.RequestInspector = withInspection(maxlen)
   149  	azureClient.PublicIPAddressesClient.ResponseInspector = byInspecting(maxlen)
   150  	azureClient.PublicIPAddressesClient.UserAgent += packerUserAgent
   151  
   152  	azureClient.VirtualMachinesClient = compute.NewVirtualMachinesClientWithBaseURI(cloud.ResourceManagerEndpoint, subscriptionID)
   153  	azureClient.VirtualMachinesClient.Authorizer = servicePrincipalToken
   154  	azureClient.VirtualMachinesClient.RequestInspector = withInspection(maxlen)
   155  	azureClient.VirtualMachinesClient.ResponseInspector = byConcatDecorators(byInspecting(maxlen), templateCapture(azureClient))
   156  	azureClient.VirtualMachinesClient.UserAgent += packerUserAgent
   157  
   158  	azureClient.AccountsClient = armStorage.NewAccountsClientWithBaseURI(cloud.ResourceManagerEndpoint, subscriptionID)
   159  	azureClient.AccountsClient.Authorizer = servicePrincipalToken
   160  	azureClient.AccountsClient.RequestInspector = withInspection(maxlen)
   161  	azureClient.AccountsClient.ResponseInspector = byInspecting(maxlen)
   162  	azureClient.AccountsClient.UserAgent += packerUserAgent
   163  
   164  	keyVaultURL, err := url.Parse(cloud.KeyVaultEndpoint)
   165  	if err != nil {
   166  		return nil, err
   167  	}
   168  
   169  	azureClient.VaultClient = common.NewVaultClient(*keyVaultURL)
   170  	azureClient.VaultClient.Authorizer = servicePrincipalTokenVault
   171  	azureClient.VaultClient.RequestInspector = withInspection(maxlen)
   172  	azureClient.VaultClient.ResponseInspector = byInspecting(maxlen)
   173  	azureClient.VaultClient.UserAgent += packerUserAgent
   174  
   175  	accountKeys, err := azureClient.AccountsClient.ListKeys(resourceGroupName, storageAccountName)
   176  	if err != nil {
   177  		return nil, err
   178  	}
   179  
   180  	storageClient, err := storage.NewClient(
   181  		storageAccountName,
   182  		*(*accountKeys.Keys)[0].Value,
   183  		cloud.StorageEndpointSuffix,
   184  		storage.DefaultAPIVersion,
   185  		true /*useHttps*/)
   186  
   187  	if err != nil {
   188  		return nil, err
   189  	}
   190  
   191  	azureClient.BlobStorageClient = storageClient.GetBlobService()
   192  	return azureClient, nil
   193  }
   194  
   195  func getInspectorMaxLength() int64 {
   196  	value, ok := os.LookupEnv(EnvPackerLogAzureMaxLen)
   197  	if !ok {
   198  		return math.MaxInt64
   199  	}
   200  
   201  	i, err := strconv.ParseInt(value, 10, 64)
   202  	if err != nil {
   203  		return 0
   204  	}
   205  
   206  	if i < 0 {
   207  		return 0
   208  	}
   209  
   210  	return i
   211  }