(DataFlex) Google Cloud Storage List Buckets

Demonstrates how to retrieve a list of buckets for a given project.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-9.5.0-win32.pkg

Procedure Test
    Handle hoSbToken
    Handle hoHttp
    Boolean iSuccess
    Variant vResp
    Handle hoResp
    Integer iResponseCode
    Handle hoJson
    String sKind
    Integer i
    Integer iCount_i
    String sId
    String sSelfLink
    String sProjectNumber
    String sName
    String sTimeCreated
    String sUpdated
    String sMetageneration
    Boolean iIamConfigurationBucketPolicyOnlyEnabled
    String sLocation
    String sStorageClass
    String sEtag
    String sTemp1
    Boolean bTemp1

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // This example uses a previously obtained access token having permission for the 
    // scope "https://www.googleapis.com/auth/cloud-platform"

    // In this example, Get Google Cloud Storage OAuth2 Access Token, 
    // the service account access token was saved to a text file.  This example fetches the access token from the file..
    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbToken
    If (Not(IsComObjectCreated(hoSbToken))) Begin
        Send CreateComObject of hoSbToken
    End
    Get ComLoadFile Of hoSbToken "qa_data/tokens/googleCloudStorageAccessToken.txt" "utf-8" To iSuccess

    Get Create (RefClass(cComChilkatHttp)) To hoHttp
    If (Not(IsComObjectCreated(hoHttp))) Begin
        Send CreateComObject of hoHttp
    End
    Get ComGetAsString Of hoSbToken To sTemp1
    Set ComAuthToken Of hoHttp To sTemp1

    // For more info see Cloud Storage Documentation - Buckets: list 
    // 
    Get ComSetUrlVar Of hoHttp "PROJECT_NAME" "ChilkatCloud" To iSuccess
    Get ComQuickGetObj Of hoHttp "https://www.googleapis.com/storage/v1/b?project={$PROJECT_NAME}" To vResp
    If (IsComObject(vResp)) Begin
        Get Create (RefClass(cComChilkatHttpResponse)) To hoResp
        Set pvComObject Of hoResp To vResp
    End
    Get ComLastMethodSuccess Of hoHttp To bTemp1
    If (bTemp1 = False) Begin
        Get ComLastErrorText Of hoHttp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComStatusCode Of hoResp To iResponseCode
    If (iResponseCode = 401) Begin
        Get ComBodyStr Of hoResp To sTemp1
        Showln sTemp1
        Showln "If invalid credentials, then it is likely the access token expired."
        Showln "Your app should automatically fetch a new access token and re-try."
        Send Destroy of hoResp
        Procedure_Return
    End

    Showln "Response code: " iResponseCode
    Showln "Response body"

    Get Create (RefClass(cComChilkatJsonObject)) To hoJson
    If (Not(IsComObjectCreated(hoJson))) Begin
        Send CreateComObject of hoJson
    End
    Get ComBodyStr Of hoResp To sTemp1
    Get ComLoad Of hoJson sTemp1 To iSuccess
    Send Destroy of hoResp

    Set ComEmitCompact Of hoJson To False

    Get ComEmit Of hoJson To sTemp1
    Showln sTemp1

    // A response code = 200 indicates success, and the response body contains JSON such as this:

    // {
    //   "kind": "storage#buckets",
    //   "items": [
    //     {
    //       "kind": "storage#bucket",
    //       "id": "chilkat-bucket",
    //       "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-bucket",
    //       "projectNumber": "5332332985",
    //       "name": "chilkat-bucket",
    //       "timeCreated": "2018-10-23T00:04:44.507Z",
    //       "updated": "2018-10-23T00:04:44.507Z",
    //       "metageneration": "1",
    //       "iamConfiguration": {
    //         "bucketPolicyOnly": {
    //           "enabled": false
    //         }
    //       },
    //       "location": "US",
    //       "storageClass": "MULTI_REGIONAL",
    //       "etag": "CAE="
    //     },
    //     {
    //       "kind": "storage#bucket",
    //       "id": "chilkat-images",
    //       "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-images",
    //       "projectNumber": "5332332985",
    //       "name": "chilkat-images",
    //       "timeCreated": "2018-10-23T11:24:43.000Z",
    //       "updated": "2018-10-23T11:24:43.000Z",
    //       "metageneration": "1",
    //       "iamConfiguration": {
    //         "bucketPolicyOnly": {
    //           "enabled": false
    //         }
    //       },
    //       "location": "US",
    //       "storageClass": "MULTI_REGIONAL",
    //       "etag": "CAE="
    //     }
    //   ]
    // }

    // Use this online tool to generate parsing code from sample JSON: 
    // Generate Parsing Code from JSON

    Get ComStringOf Of hoJson "kind" To sKind
    Move 0 To i
    Get ComSizeOfArray Of hoJson "items" To iCount_i
    While (i < iCount_i)
        Set ComI Of hoJson To i
        Get ComStringOf Of hoJson "items[i].kind" To sKind
        Get ComStringOf Of hoJson "items[i].id" To sId
        Get ComStringOf Of hoJson "items[i].selfLink" To sSelfLink
        Get ComStringOf Of hoJson "items[i].projectNumber" To sProjectNumber
        Get ComStringOf Of hoJson "items[i].name" To sName
        Get ComStringOf Of hoJson "items[i].timeCreated" To sTimeCreated
        Get ComStringOf Of hoJson "items[i].updated" To sUpdated
        Get ComStringOf Of hoJson "items[i].metageneration" To sMetageneration
        Get ComBoolOf Of hoJson "items[i].iamConfiguration.bucketPolicyOnly.enabled" To iIamConfigurationBucketPolicyOnlyEnabled
        Get ComStringOf Of hoJson "items[i].location" To sLocation
        Get ComStringOf Of hoJson "items[i].storageClass" To sStorageClass
        Get ComStringOf Of hoJson "items[i].etag" To sEtag
        Move i + 1 To i
    Loop



End_Procedure