(C) EC2 Start Instances

See more Amazon EC2 Examples

Demonstrates how to send a request to start Amazon EC2 instances.

For more information, see https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_StartInstances.html

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#include <C_CkRest.h>
#include <C_CkAuthAws.h>
#include <C_CkXml.h>

void ChilkatSample(void)
    {
    HCkRest rest;
    BOOL bTls;
    int port;
    BOOL bAutoReconnect;
    BOOL success;
    HCkAuthAws authAws;
    const char *responseXml;
    HCkXml xml;

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

    rest = CkRest_Create();

    // Connect to the Amazon AWS server.
    // such as https://ec2.amazonaws.com/
    bTls = TRUE;
    port = 443;
    bAutoReconnect = TRUE;
    success = CkRest_Connect(rest,"ec2.us-west-2.amazonaws.com",port,bTls,bAutoReconnect);

    // Provide AWS credentials for the REST call.
    authAws = CkAuthAws_Create();
    CkAuthAws_putAccessKey(authAws,"AWS_ACCESS_KEY");
    CkAuthAws_putSecretKey(authAws,"AWS_SECRET_KEY");
    // the region should match the region part of the domain passed to the REST connect method (above).
    CkAuthAws_putRegion(authAws,"us-west-2");
    CkAuthAws_putServiceName(authAws,"ec2");

    CkRest_SetAuthAws(rest,authAws);

    CkRest_AddQueryParam(rest,"Action","StartInstances");
    CkRest_AddQueryParam(rest,"Version","2016-11-15");
    // If DryRun is true then checks whether you have the required permissions for the action, 
    // without actually making the request, and provides an error response. If you have the required permissions, 
    // the error response is DryRunOperation. Otherwise, it is UnauthorizedOperation.
    // Omit the DryRun query parameter to actually start the instance.  (Or set DryRun equal to "false")
    CkRest_AddQueryParam(rest,"DryRun","true");
    CkRest_AddQueryParam(rest,"InstanceId.1","i-999719995399c9999");

    responseXml = CkRest_fullRequestNoBody(rest,"GET","/");
    if (CkRest_getLastMethodSuccess(rest) != TRUE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkRest_Dispose(rest);
        CkAuthAws_Dispose(authAws);
        return;
    }

    // A successful response will have a status code equal to 200.
    if (CkRest_getResponseStatusCode(rest) != 200) {
        printf("response status code = %d\n",CkRest_getResponseStatusCode(rest));
        printf("response status text = %s\n",CkRest_responseStatusText(rest));
        printf("response header: %s\n",CkRest_responseHeader(rest));
        printf("response body: %s\n",responseXml);
        CkRest_Dispose(rest);
        CkAuthAws_Dispose(authAws);
        return;
    }

    // Examine the successful XML response.
    xml = CkXml_Create();
    CkXml_LoadXml(xml,responseXml);
    printf("%s\n",CkXml_getXml(xml));


    CkRest_Dispose(rest);
    CkAuthAws_Dispose(authAws);
    CkXml_Dispose(xml);

    }