(DataFlex) Send JSON REST Request, Get JSON Response

Demonstrates sending a RESTful JSON request, and receiving a JSON response. This example will create a bucket in Google Cloud Storage (which involves sending and receiving JSON).

Note: This example requires Chilkat v11.0.0 or greater.

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

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Variant vGAuth
    Handle hoGAuth
    Handle hoRest
    Boolean iBAutoReconnect
    Handle hoJsonReqBody
    Variant vObjVersioning
    Handle hoObjVersioning
    String sJsonResponseStr
    String sTemp1
    Boolean bTemp1

    Move False To iSuccess

    // This example will create a bucket in Google Cloud Storage.

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

    Get Create (RefClass(cComChilkatAuthGoogle)) To hoGAuth
    If (Not(IsComObjectCreated(hoGAuth))) Begin
        Send CreateComObject of hoGAuth
    End
    // Obtain an access token as shown in one of the following examples:
    // See Get Access Token using a Service Account JSON Key
    // See Get Access Token using a P12 File

    Get Create (RefClass(cComChilkatRest)) To hoRest
    If (Not(IsComObjectCreated(hoRest))) Begin
        Send CreateComObject of hoRest
    End

    // Connect using TLS.
    Move True To iBAutoReconnect
    Get ComConnect Of hoRest "www.googleapis.com" 443 True iBAutoReconnect To iSuccess

    // Provide the authentication credentials (i.e. the access key)
    Get pvComObject of hoGAuth to vGAuth
    Get ComSetAuthGoogle Of hoRest vGAuth To iSuccess

    // Build the JSON request body for creating a bucket.
    // The only required property is the "name", but we'll add more
    // to make a better example..
    Get Create (RefClass(cComChilkatJsonObject)) To hoJsonReqBody
    If (Not(IsComObjectCreated(hoJsonReqBody))) Begin
        Send CreateComObject of hoJsonReqBody
    End
    Get ComAppendString Of hoJsonReqBody "name" "chilkat-bucket-c" To iSuccess
    Get ComAppendString Of hoJsonReqBody "kind" "storage#bucket" To iSuccess
    Get ComAppendString Of hoJsonReqBody "location" "US" To iSuccess

    Get Create (RefClass(cComChilkatJsonObject)) To hoObjVersioning
    If (Not(IsComObjectCreated(hoObjVersioning))) Begin
        Send CreateComObject of hoObjVersioning
    End
    Get pvComObject of hoObjVersioning to vObjVersioning
    Get ComAppendObject2 Of hoJsonReqBody "versioning" vObjVersioning To iSuccess
    Get ComAppendBool Of hoObjVersioning "enabled" True To iSuccess

    // Show the HTTP request body we'll be sending.
    Get ComEmit Of hoJsonReqBody To sTemp1
    Showln sTemp1

    // Add the required query parameter.
    // See https://cloud.google.com/storage/docs/json_api/v1/buckets/insert
    Get ComAddQueryParam Of hoRest "project" "chilkattest-1050" To iSuccess

    // Add the Content-Type HTTP request header.
    Get ComAddHeader Of hoRest "Content-Type" "application/json; charset=UTF-8" To iSuccess

    Get ComEmit Of hoJsonReqBody To sTemp1
    Get ComFullRequestString Of hoRest "POST" "/storage/v1/b" sTemp1 To sJsonResponseStr
    Get ComLastMethodSuccess Of hoRest To bTemp1
    If (bTemp1 = False) Begin
        Get ComLastErrorText Of hoRest To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Show the JSON response.  (See below for a sample JSON response.)
    Showln "Json Response: " sJsonResponseStr

    // {
    //  "kind": "storage#bucket",
    //  "id": "chilkat-bucket-c",
    //  "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-bucket-c",
    //  "projectNumber": "999992999999",
    //  "name": "chilkat-bucket-c",
    //  "timeCreated": "2016-04-29T21:08:10.451Z",
    //  "updated": "2016-04-29T21:08:10.451Z",
    //  "metageneration": "1",
    //  "owner": {
    //   "entity": "project-owners-999992999999"
    //  },
    //  "location": "US",
    //  "versioning": {
    //   "enabled": true
    //  },
    //  "storageClass": "STANDARD",
    //  "etag": "CAE="
    // }
    // 


End_Procedure