Chilkat Online Tools

ListDatastores delphiDll Example

AWS IoT Analytics

var
rest: HCkRest;
success: Boolean;
authAws: HCkAuthAws;
sbResponseBody: HCkStringBuilder;
respStatusCode: Integer;
jResp: HCkJsonObject;
creationTime: Integer;
datastoreName: PWideChar;
Bucket: PWideChar;
KeyPrefix: PWideChar;
RoleArn: PWideChar;
CustomerManagedS3StorageBucket: PWideChar;
CustomerManagedS3StorageKeyPrefix: PWideChar;
fileFormatType: PWideChar;
lastMessageArrivalTime: Integer;
lastUpdateTime: Integer;
status: PWideChar;
j: Integer;
count_j: Integer;
AttributeName: PWideChar;
timestampPartitionAttributeName: PWideChar;
TimestampFormat: PWideChar;
nextToken: PWideChar;
i: Integer;
count_i: Integer;

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

rest := CkRest_Create();

authAws := CkAuthAws_Create();
CkAuthAws_putAccessKey(authAws,'AWS_ACCESS_KEY');
CkAuthAws_putSecretKey(authAws,'AWS_SECRET_KEY');

// Don't forget to change the region to your particular region. (Also make the same change in the call to Connect below.)
CkAuthAws_putRegion(authAws,'us-west-2');
CkAuthAws_putServiceName(authAws,'iotanalytics');
// SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
CkRest_SetAuthAws(rest,authAws);

// URL: https://iotanalytics.us-west-2.amazonaws.com/
// Use the same region as specified above.
success := CkRest_Connect(rest,'iotanalytics.us-west-2.amazonaws.com',443,True,True);
if (success <> True) then
  begin
    Memo1.Lines.Add('ConnectFailReason: ' + IntToStr(CkRest_getConnectFailReason(rest)));
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;

CkRest_AddHeader(rest,'Content-Type','application/x-amz-json-1.1');
CkRest_AddHeader(rest,'X-Amz-Target','ListDatastores');

sbResponseBody := CkStringBuilder_Create();
success := CkRest_FullRequestNoBodySb(rest,'GET','/datastores',sbResponseBody);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;
respStatusCode := CkRest_getResponseStatusCode(rest);
Memo1.Lines.Add('response status code = ' + IntToStr(respStatusCode));
if (respStatusCode <> 200) then
  begin
    Memo1.Lines.Add('Response Header:');
    Memo1.Lines.Add(CkRest__responseHeader(rest));
    Memo1.Lines.Add('Response Body:');
    Memo1.Lines.Add(CkStringBuilder__getAsString(sbResponseBody));
    Exit;
  end;

jResp := CkJsonObject_Create();
CkJsonObject_LoadSb(jResp,sbResponseBody);

// The following code parses the JSON response.
// A sample JSON response is shown below the sample code.

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

nextToken := CkJsonObject__stringOf(jResp,'nextToken');
i := 0;
count_i := CkJsonObject_SizeOfArray(jResp,'datastoreSummaries');
while i < count_i do
  begin
    CkJsonObject_putI(jResp,i);
    creationTime := CkJsonObject_IntOf(jResp,'datastoreSummaries[i].creationTime');
    datastoreName := CkJsonObject__stringOf(jResp,'datastoreSummaries[i].datastoreName');
    Bucket := CkJsonObject__stringOf(jResp,'datastoreSummaries[i].datastoreStorage.customerManagedS3.bucket');
    KeyPrefix := CkJsonObject__stringOf(jResp,'datastoreSummaries[i].datastoreStorage.customerManagedS3.keyPrefix');
    RoleArn := CkJsonObject__stringOf(jResp,'datastoreSummaries[i].datastoreStorage.customerManagedS3.roleArn');
    CustomerManagedS3StorageBucket := CkJsonObject__stringOf(jResp,'datastoreSummaries[i].datastoreStorage.iotSiteWiseMultiLayerStorage.customerManagedS3Storage.bucket');
    CustomerManagedS3StorageKeyPrefix := CkJsonObject__stringOf(jResp,'datastoreSummaries[i].datastoreStorage.iotSiteWiseMultiLayerStorage.customerManagedS3Storage.keyPrefix');
    fileFormatType := CkJsonObject__stringOf(jResp,'datastoreSummaries[i].fileFormatType');
    lastMessageArrivalTime := CkJsonObject_IntOf(jResp,'datastoreSummaries[i].lastMessageArrivalTime');
    lastUpdateTime := CkJsonObject_IntOf(jResp,'datastoreSummaries[i].lastUpdateTime');
    status := CkJsonObject__stringOf(jResp,'datastoreSummaries[i].status');
    j := 0;
    count_j := CkJsonObject_SizeOfArray(jResp,'datastoreSummaries[i].datastorePartitions.partitions');
    while j < count_j do
      begin
        CkJsonObject_putJ(jResp,j);
        AttributeName := CkJsonObject__stringOf(jResp,'datastoreSummaries[i].datastorePartitions.partitions[j].attributePartition.attributeName');
        timestampPartitionAttributeName := CkJsonObject__stringOf(jResp,'datastoreSummaries[i].datastorePartitions.partitions[j].timestampPartition.attributeName');
        TimestampFormat := CkJsonObject__stringOf(jResp,'datastoreSummaries[i].datastorePartitions.partitions[j].timestampPartition.timestampFormat');
        j := j + 1;
      end;

    i := i + 1;
  end;

// A sample JSON response body parsed by the above code:

// {
//   "datastoreSummaries": [
//     {
//       "creationTime": number,
//       "datastoreName": "string",
//       "datastorePartitions": {
//         "partitions": [
//           {
//             "attributePartition": {
//               "attributeName": "string"
//             },
//             "timestampPartition": {
//               "attributeName": "string",
//               "timestampFormat": "string"
//             }
//           }
//         ]
//       },
//       "datastoreStorage": {
//         "customerManagedS3": {
//           "bucket": "string",
//           "keyPrefix": "string",
//           "roleArn": "string"
//         },
//         "iotSiteWiseMultiLayerStorage": {
//           "customerManagedS3Storage": {
//             "bucket": "string",
//             "keyPrefix": "string"
//           }
//         },
//         "serviceManagedS3": {}
//       },
//       "fileFormatType": "string",
//       "lastMessageArrivalTime": number,
//       "lastUpdateTime": number,
//       "status": "string"
//     }
//   ],
//   "nextToken": "string"
// }

CkRest_Dispose(rest);
CkAuthAws_Dispose(authAws);
CkStringBuilder_Dispose(sbResponseBody);
CkJsonObject_Dispose(jResp);