C

S3 - Working with Buckets in a Region

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Demonstrates how to work with S3 buckets located in a particular region. C

#include <C_CkRest.h>
#include <C_CkAuthAws.h>
#include <C_CkBinData.h>
#include <C_CkStringBuilder.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkRest rest;
    BOOL bTls;
    int port;
    BOOL bAutoReconnect;
    HCkAuthAws authAws;
    HCkBinData fileData;
    HCkStringBuilder responseBody;
    int statusCode;

    success = FALSE;

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

    // When usig the REST class to access an S3 bucket that has been created in a particular region,
    // there are three important things to remember:
    // 
    // 1) Connect to the domain that includes the region.  For example, instead of connecting to
    //    "s3.amazonaws.com", connect to "s3.eu-central-1.amazonaws.com" if your bucket is in the EU Frankfurt region.
    //    See http://docs.aws.amazon.com/general/latest/gr/rande.html#s3_region   for a list of S3 region domains (endpoints)
    // 
    // 2) Set the AuthAws.Region property equal to the region, such as "eu-central-1".
    // 
    // 3) Include the region in request's Host header.
    // 

    // This example will upload to a bucket in the eu-central-1 region.
    // 
    rest = CkRest_Create();

    // Connect to the Amazon AWS REST server.
    bTls = TRUE;
    port = 443;
    bAutoReconnect = TRUE;
    success = CkRest_Connect(rest,"s3.eu-central-1.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");
    CkAuthAws_putServiceName(authAws,"s3");
    CkAuthAws_putRegion(authAws,"eu-central-1");
    success = CkRest_SetAuthAws(rest,authAws);

    // Set the bucket name via the HOST header.
    // In this case, the bucket name is "chilkateufrankfurt" (which was created in the eu-central-1 region)
    CkRest_putHost(rest,"chilkateufrankfurt.s3.eu-central-1.amazonaws.com");

    fileData = CkBinData_Create();
    success = CkBinData_LoadFile(fileData,"qa_data/jpg/starfish.jpg");

    // Upload the file to Amazon S3.
    responseBody = CkStringBuilder_Create();
    success = CkRest_FullRequestBd(rest,"PUT","/starfish.jpg",fileData,responseBody);
    if (success != TRUE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkRest_Dispose(rest);
        CkAuthAws_Dispose(authAws);
        CkBinData_Dispose(fileData);
        CkStringBuilder_Dispose(responseBody);
        return;
    }

    // Did we get a 200 response indicating success?
    statusCode = CkRest_getResponseStatusCode(rest);
    if (statusCode != 200) {
        printf("Error response: %s\n",CkStringBuilder_getAsString(responseBody));
        printf("Status code: %d, Status text: %s\n",statusCode,CkRest_responseStatusText(rest));
        CkRest_Dispose(rest);
        CkAuthAws_Dispose(authAws);
        CkBinData_Dispose(fileData);
        CkStringBuilder_Dispose(responseBody);
        return;
    }

    printf("File successfully uploaded.\n");


    CkRest_Dispose(rest);
    CkAuthAws_Dispose(authAws);
    CkBinData_Dispose(fileData);
    CkStringBuilder_Dispose(responseBody);

    }