Chilkat Online Tools

StartSnapshot delphiDll Example

Amazon Elastic Block Store

var
rest: HCkRest;
success: Boolean;
authAws: HCkAuthAws;
json: HCkJsonObject;
sbRequestBody: HCkStringBuilder;
sbResponseBody: HCkStringBuilder;
respStatusCode: Integer;
jResp: HCkJsonObject;
Key: PWideChar;
Value: PWideChar;
BlockSize: Integer;
Description: PWideChar;
KmsKeyArn: PWideChar;
OwnerId: PWideChar;
ParentSnapshotId: PWideChar;
SnapshotId: PWideChar;
StartTime: Integer;
Status: PWideChar;
VolumeSize: Integer;
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,'ebs');
// SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
CkRest_SetAuthAws(rest,authAws);

// URL: https://ebs.us-west-2.amazonaws.com/
// Use the same region as specified above.
success := CkRest_Connect(rest,'ebs.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;

// The following code creates the JSON request body.
// The JSON created by this code is shown below.

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

json := CkJsonObject_Create();
CkJsonObject_UpdateString(json,'ClientToken','string');
CkJsonObject_UpdateString(json,'Description','string');
CkJsonObject_UpdateInt(json,'Encrypted',123);
CkJsonObject_UpdateString(json,'KmsKeyArn','string');
CkJsonObject_UpdateString(json,'ParentSnapshotId','string');
CkJsonObject_UpdateString(json,'Tags[0].Key','string');
CkJsonObject_UpdateString(json,'Tags[0].Value','string');
CkJsonObject_UpdateInt(json,'Timeout',123);
CkJsonObject_UpdateInt(json,'VolumeSize',123);

// The JSON request body created by the above code:

// {
//   "ClientToken": "string",
//   "Description": "string",
//   "Encrypted": boolean,
//   "KmsKeyArn": "string",
//   "ParentSnapshotId": "string",
//   "Tags": [
//     {
//       "Key": "string",
//       "Value": "string"
//     }
//   ],
//   "Timeout": number,
//   "VolumeSize": number
// }

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

sbRequestBody := CkStringBuilder_Create();
CkJsonObject_EmitSb(json,sbRequestBody);
sbResponseBody := CkStringBuilder_Create();
success := CkRest_FullRequestSb(rest,'POST','/snapshots',sbRequestBody,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

BlockSize := CkJsonObject_IntOf(jResp,'BlockSize');
Description := CkJsonObject__stringOf(jResp,'Description');
KmsKeyArn := CkJsonObject__stringOf(jResp,'KmsKeyArn');
OwnerId := CkJsonObject__stringOf(jResp,'OwnerId');
ParentSnapshotId := CkJsonObject__stringOf(jResp,'ParentSnapshotId');
SnapshotId := CkJsonObject__stringOf(jResp,'SnapshotId');
StartTime := CkJsonObject_IntOf(jResp,'StartTime');
Status := CkJsonObject__stringOf(jResp,'Status');
VolumeSize := CkJsonObject_IntOf(jResp,'VolumeSize');
i := 0;
count_i := CkJsonObject_SizeOfArray(jResp,'Tags');
while i < count_i do
  begin
    CkJsonObject_putI(jResp,i);
    Key := CkJsonObject__stringOf(jResp,'Tags[i].Key');
    Value := CkJsonObject__stringOf(jResp,'Tags[i].Value');
    i := i + 1;
  end;

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

// {
//   "BlockSize": number,
//   "Description": "string",
//   "KmsKeyArn": "string",
//   "OwnerId": "string",
//   "ParentSnapshotId": "string",
//   "SnapshotId": "string",
//   "StartTime": number,
//   "Status": "string",
//   "Tags": [
//     {
//       "Key": "string",
//       "Value": "string"
//     }
//   ],
//   "VolumeSize": number
// }

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