Chilkat Online Tools

DescribeEventAggregates delphiAx Example

AWS Health

var
rest: TChilkatRest;
success: Integer;
authAws: TChilkatAuthAws;
json: TChilkatJsonObject;
sbRequestBody: TChilkatStringBuilder;
sbResponseBody: TChilkatStringBuilder;
respStatusCode: Integer;
jResp: TChilkatJsonObject;
aggregateValue: WideString;
count: Integer;
nextToken: WideString;
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 := TChilkatRest.Create(Self);

authAws := TChilkatAuthAws.Create(Self);
authAws.AccessKey := 'AWS_ACCESS_KEY';
authAws.SecretKey := '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.)
authAws.Region := 'us-west-2';
authAws.ServiceName := 'health';
// SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
rest.SetAuthAws(authAws.ControlInterface);

// URL: https://health.us-west-2.amazonaws.com/
// Use the same region as specified above.
success := rest.Connect('health.us-west-2.amazonaws.com',443,1,1);
if (success <> 1) then
  begin
    Memo1.Lines.Add('ConnectFailReason: ' + IntToStr(rest.ConnectFailReason));
    Memo1.Lines.Add(rest.LastErrorText);
    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 := TChilkatJsonObject.Create(Self);
json.UpdateString('aggregateField','string');
json.UpdateString('filter.availabilityZones[0]','string');
json.UpdateInt('filter.endTimes[0].from',123);
json.UpdateInt('filter.endTimes[0].to',123);
json.UpdateString('filter.entityArns[0]','string');
json.UpdateString('filter.entityValues[0]','string');
json.UpdateString('filter.eventArns[0]','string');
json.UpdateString('filter.eventStatusCodes[0]','string');
json.UpdateString('filter.eventTypeCategories[0]','string');
json.UpdateString('filter.eventTypeCodes[0]','string');
json.UpdateInt('filter.lastUpdatedTimes[0].from',123);
json.UpdateInt('filter.lastUpdatedTimes[0].to',123);
json.UpdateString('filter.regions[0]','string');
json.UpdateString('filter.services[0]','string');
json.UpdateInt('filter.startTimes[0].from',123);
json.UpdateInt('filter.startTimes[0].to',123);
json.UpdateString('filter.tags[0].string','string');
json.UpdateInt('maxResults',123);
json.UpdateString('nextToken','string');

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

// {
//   "aggregateField": "string",
//   "filter": {
//     "availabilityZones": [
//       "string"
//     ],
//     "endTimes": [
//       {
//         "from": number,
//         "to": number
//       }
//     ],
//     "entityArns": [
//       "string"
//     ],
//     "entityValues": [
//       "string"
//     ],
//     "eventArns": [
//       "string"
//     ],
//     "eventStatusCodes": [
//       "string"
//     ],
//     "eventTypeCategories": [
//       "string"
//     ],
//     "eventTypeCodes": [
//       "string"
//     ],
//     "lastUpdatedTimes": [
//       {
//         "from": number,
//         "to": number
//       }
//     ],
//     "regions": [
//       "string"
//     ],
//     "services": [
//       "string"
//     ],
//     "startTimes": [
//       {
//         "from": number,
//         "to": number
//       }
//     ],
//     "tags": [
//       {
//         "string": "string"
//       }
//     ]
//   },
//   "maxResults": number,
//   "nextToken": "string"
// }

rest.AddHeader('Content-Type','application/x-amz-json-1.1');
rest.AddHeader('X-Amz-Target','AWSHealth_20160804.DescribeEventAggregates');

sbRequestBody := TChilkatStringBuilder.Create(Self);
json.EmitSb(sbRequestBody.ControlInterface);
sbResponseBody := TChilkatStringBuilder.Create(Self);
success := rest.FullRequestSb('POST','/',sbRequestBody.ControlInterface,sbResponseBody.ControlInterface);
if (success <> 1) then
  begin
    Memo1.Lines.Add(rest.LastErrorText);
    Exit;
  end;
respStatusCode := rest.ResponseStatusCode;
Memo1.Lines.Add('response status code = ' + IntToStr(respStatusCode));
if (respStatusCode <> 200) then
  begin
    Memo1.Lines.Add('Response Header:');
    Memo1.Lines.Add(rest.ResponseHeader);
    Memo1.Lines.Add('Response Body:');
    Memo1.Lines.Add(sbResponseBody.GetAsString());
    Exit;
  end;

jResp := TChilkatJsonObject.Create(Self);
jResp.LoadSb(sbResponseBody.ControlInterface);

// 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 := jResp.StringOf('nextToken');
i := 0;
count_i := jResp.SizeOfArray('eventAggregates');
while i < count_i do
  begin
    jResp.I := i;
    aggregateValue := jResp.StringOf('eventAggregates[i].aggregateValue');
    count := jResp.IntOf('eventAggregates[i].count');
    i := i + 1;
  end;

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

// {
//   "eventAggregates": [
//     {
//       "aggregateValue": "string",
//       "count": number
//     }
//   ],
//   "nextToken": "string"
// }