Chilkat Online Tools

DescribeStatement unicodeCpp Example

Amazon Redshift Data API

#include <CkRestW.h>
#include <CkAuthAwsW.h>
#include <CkJsonObjectW.h>
#include <CkStringBuilderW.h>

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

    CkRestW rest;
    bool success;

    CkAuthAwsW authAws;
    authAws.put_AccessKey(L"AWS_ACCESS_KEY");
    authAws.put_SecretKey(L"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(L"us-west-2");
    authAws.put_ServiceName(L"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(L"redshift-data.us-west-2.amazonaws.com",443,true,true);
    if (success != true) {
        wprintf(L"ConnectFailReason: %d\n",rest.get_ConnectFailReason());
        wprintf(L"%s\n",rest.lastErrorText());
        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

    CkJsonObjectW json;
    json.UpdateString(L"Id",L"string");

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

    // {
    //   "Id": "string"
    // }

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

    CkStringBuilderW sbRequestBody;
    json.EmitSb(sbRequestBody);
    CkStringBuilderW sbResponseBody;
    success = rest.FullRequestSb(L"POST",L"/",sbRequestBody,sbResponseBody);
    if (success != true) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    int respStatusCode = rest.get_ResponseStatusCode();
    wprintf(L"response status code = %d\n",respStatusCode);
    if (respStatusCode != 200) {
        wprintf(L"Response Header:\n");
        wprintf(L"%s\n",rest.responseHeader());
        wprintf(L"Response Body:\n");
        wprintf(L"%s\n",sbResponseBody.getAsString());
        return;
    }

    CkJsonObjectW 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 wchar_t *name = 0;
    const wchar_t *value = 0;

    const wchar_t *ClusterIdentifier = jResp.stringOf(L"ClusterIdentifier");
    int CreatedAt = jResp.IntOf(L"CreatedAt");
    const wchar_t *Database = jResp.stringOf(L"Database");
    const wchar_t *DbUser = jResp.stringOf(L"DbUser");
    int Duration = jResp.IntOf(L"Duration");
    const wchar_t *Error = jResp.stringOf(L"Error");
    int HasResultSet = jResp.IntOf(L"HasResultSet");
    const wchar_t *Id = jResp.stringOf(L"Id");
    const wchar_t *QueryString = jResp.stringOf(L"QueryString");
    int RedshiftPid = jResp.IntOf(L"RedshiftPid");
    int RedshiftQueryId = jResp.IntOf(L"RedshiftQueryId");
    int ResultRows = jResp.IntOf(L"ResultRows");
    int ResultSize = jResp.IntOf(L"ResultSize");
    const wchar_t *SecretArn = jResp.stringOf(L"SecretArn");
    const wchar_t *Status = jResp.stringOf(L"Status");
    int UpdatedAt = jResp.IntOf(L"UpdatedAt");
    int i = 0;
    int count_i = jResp.SizeOfArray(L"QueryParameters");
    while (i < count_i) {
        jResp.put_I(i);
        name = jResp.stringOf(L"QueryParameters[i].name");
        value = jResp.stringOf(L"QueryParameters[i].value");
        i = i + 1;
    }

    i = 0;
    count_i = jResp.SizeOfArray(L"SubStatements");
    while (i < count_i) {
        jResp.put_I(i);
        CreatedAt = jResp.IntOf(L"SubStatements[i].CreatedAt");
        Duration = jResp.IntOf(L"SubStatements[i].Duration");
        Error = jResp.stringOf(L"SubStatements[i].Error");
        HasResultSet = jResp.IntOf(L"SubStatements[i].HasResultSet");
        Id = jResp.stringOf(L"SubStatements[i].Id");
        QueryString = jResp.stringOf(L"SubStatements[i].QueryString");
        RedshiftQueryId = jResp.IntOf(L"SubStatements[i].RedshiftQueryId");
        ResultRows = jResp.IntOf(L"SubStatements[i].ResultRows");
        ResultSize = jResp.IntOf(L"SubStatements[i].ResultSize");
        Status = jResp.stringOf(L"SubStatements[i].Status");
        UpdatedAt = jResp.IntOf(L"SubStatements[i].UpdatedAt");
        i = i + 1;
    }

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

    // {
    //   "ClusterIdentifier": "string",
    //   "CreatedAt": number,
    //   "Database": "string",
    //   "DbUser": "string",
    //   "Duration": number,
    //   "Error": "string",
    //   "HasResultSet": boolean,
    //   "Id": "string",
    //   "QueryParameters": [
    //     {
    //       "name": "string",
    //       "value": "string"
    //     }
    //   ],
    //   "QueryString": "string",
    //   "RedshiftPid": number,
    //   "RedshiftQueryId": number,
    //   "ResultRows": number,
    //   "ResultSize": number,
    //   "SecretArn": "string",
    //   "Status": "string",
    //   "SubStatements": [
    //     {
    //       "CreatedAt": number,
    //       "Duration": number,
    //       "Error": "string",
    //       "HasResultSet": boolean,
    //       "Id": "string",
    //       "QueryString": "string",
    //       "RedshiftQueryId": number,
    //       "ResultRows": number,
    //       "ResultSize": number,
    //       "Status": "string",
    //       "UpdatedAt": number
    //     }
    //   ],
    //   "UpdatedAt": number
    // }
    }