Chilkat Online Tools

ExecuteStatement C++ Example

Amazon Redshift Data API

#include <CkRest.h>
#include <CkAuthAws.h>
#include <CkJsonObject.h>
#include <CkStringBuilder.h>

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

    CkRest rest;
    bool success;

    CkAuthAws authAws;
    authAws.put_AccessKey("AWS_ACCESS_KEY");
    authAws.put_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.put_Region("us-west-2");
    authAws.put_ServiceName("redshift-data");
    // SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
    rest.SetAuthAws(authAws);

    // URL: https://redshift-data.us-west-2.amazonaws.com/
    // Use the same region as specified above.
    success = rest.Connect("redshift-data.us-west-2.amazonaws.com",443,true,true);
    if (success != true) {
        std::cout << "ConnectFailReason: " << rest.get_ConnectFailReason() << "\r\n";
        std::cout << rest.lastErrorText() << "\r\n";
        return;
    }

    // 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

    CkJsonObject json;
    json.UpdateString("ClusterIdentifier","string");
    json.UpdateString("Database","string");
    json.UpdateString("DbUser","string");
    json.UpdateString("Parameters[0].name","string");
    json.UpdateString("Parameters[0].value","string");
    json.UpdateString("SecretArn","string");
    json.UpdateString("Sql","string");
    json.UpdateString("StatementName","string");
    json.UpdateInt("WithEvent",123);

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

    // {
    //   "ClusterIdentifier": "string",
    //   "Database": "string",
    //   "DbUser": "string",
    //   "Parameters": [
    //     {
    //       "name": "string",
    //       "value": "string"
    //     }
    //   ],
    //   "SecretArn": "string",
    //   "Sql": "string",
    //   "StatementName": "string",
    //   "WithEvent": boolean
    // }

    rest.AddHeader("Content-Type","application/x-amz-json-1.1");
    rest.AddHeader("X-Amz-Target","RedshiftData.ExecuteStatement");

    CkStringBuilder sbRequestBody;
    json.EmitSb(sbRequestBody);
    CkStringBuilder sbResponseBody;
    success = rest.FullRequestSb("POST","/",sbRequestBody,sbResponseBody);
    if (success != true) {
        std::cout << rest.lastErrorText() << "\r\n";
        return;
    }

    int respStatusCode = rest.get_ResponseStatusCode();
    std::cout << "response status code = " << respStatusCode << "\r\n";
    if (respStatusCode != 200) {
        std::cout << "Response Header:" << "\r\n";
        std::cout << rest.responseHeader() << "\r\n";
        std::cout << "Response Body:" << "\r\n";
        std::cout << sbResponseBody.getAsString() << "\r\n";
        return;
    }

    CkJsonObject jResp;
    jResp.LoadSb(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

    // Chilkat functions returning "const char *" return a pointer to temporary internal memory owned and managed by Chilkat.
    // See this example explaining how this memory should be used: const char * functions.

    const char *ClusterIdentifier = jResp.stringOf("ClusterIdentifier");
    int CreatedAt = jResp.IntOf("CreatedAt");
    const char *Database = jResp.stringOf("Database");
    const char *DbUser = jResp.stringOf("DbUser");
    const char *Id = jResp.stringOf("Id");
    const char *SecretArn = jResp.stringOf("SecretArn");

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

    // {
    //   "ClusterIdentifier": "string",
    //   "CreatedAt": number,
    //   "Database": "string",
    //   "DbUser": "string",
    //   "Id": "string",
    //   "SecretArn": "string"
    // }
    }