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(C) Upload File to Google Cloud Storage

See more Google Cloud Storage Examples

Demonstrates how to upload a file to Google Cloud Storage.

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#include <C_CkStringBuilder.h>
#include <C_CkHttp.h>
#include <C_CkHttpRequest.h>
#include <C_CkHttpResponse.h>

void ChilkatSample(void)
    {
    HCkStringBuilder sbToken;
    HCkHttp http;
    HCkStringBuilder sbPath;
    int numReplaced;
    HCkHttpRequest req;
    HCkHttpResponse resp;
    int responseCode;

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

    // This example uses a previously obtained access token having permission for the 
    // scope "https://www.googleapis.com/auth/cloud-platform"

    // In this example, Get Google Cloud Storage OAuth2 Access Token, 
    // the service account access token was saved to a text file.  This example fetches the access token from the file..
    sbToken = CkStringBuilder_Create();
    CkStringBuilder_LoadFile(sbToken,"qa_data/tokens/googleCloudStorageAccessToken.txt","utf-8");

    // Send a POST equivalent to this curl command.
    // The content of the file is contained in the request body.

    // curl -X POST --data-binary @[OBJECT] \
    //     -H "Authorization: Bearer [OAUTH2_TOKEN]" \
    //     -H "Content-Type: [OBJECT_CONTENT_TYPE]" \
    //     "https://www.googleapis.com/upload/storage/v1/b/[BUCKET_NAME]/o?uploadType=media&name=[OBJECT_NAME]"

    http = CkHttp_Create();
    CkHttp_putAuthToken(http,CkStringBuilder_getAsString(sbToken));

    sbPath = CkStringBuilder_Create();
    CkStringBuilder_Append(sbPath,"/upload/storage/v1/b/bucket_name/o?uploadType=media&name=object_name");
    numReplaced = CkStringBuilder_Replace(sbPath,"bucket_name","chilkat-ocean");
    numReplaced = CkStringBuilder_Replace(sbPath,"object_name","penguins.jpg");

    req = CkHttpRequest_Create();
    CkHttpRequest_putHttpVerb(req,"POST");
    CkHttpRequest_putPath(req,CkStringBuilder_getAsString(sbPath));
    CkHttpRequest_putContentType(req,"image/jpeg");
    // Indicate the file to be streamed in the request body when the HTTP POST is sent.
    CkHttpRequest_StreamBodyFromFile(req,"qa_data/jpg/penguins.jpg");

    resp = CkHttp_SynchronousRequest(http,"www.googleapis.com",443,TRUE,req);
    if (CkHttp_getLastMethodSuccess(http) == FALSE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkStringBuilder_Dispose(sbToken);
        CkHttp_Dispose(http);
        CkStringBuilder_Dispose(sbPath);
        CkHttpRequest_Dispose(req);
        return;
    }

    responseCode = CkHttpResponse_getStatusCode(resp);
    if (responseCode == 401) {
        printf("%s\n",CkHttpResponse_bodyStr(resp));
        printf("If invalid credentials, then it is likely the access token expired.\n");
        printf("Your app should automatically fetch a new access token and re-try.\n");
        CkHttpResponse_Dispose(resp);
        CkStringBuilder_Dispose(sbToken);
        CkHttp_Dispose(http);
        CkStringBuilder_Dispose(sbPath);
        CkHttpRequest_Dispose(req);
        return;
    }

    printf("Response code: %d\n",responseCode);
    printf("Response body\n");
    printf("%s\n",CkHttpResponse_bodyStr(resp));

    // A successful response looks like this:
    // Response code: 200
    // Response body
    // {
    //  "kind": "storage#object",
    //  "id": "chilkat-ocean/penguins.jpg/1502643657837855",
    //  "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-ocean/o/penguins.jpg",
    //  "name": "penguins.jpg",
    //  "bucket": "chilkat-ocean",
    //  "generation": "1502643657837855",
    //  "metageneration": "1",
    //  "contentType": "image/jpeg",
    //  "timeCreated": "2017-08-13T17:00:57.811Z",
    //  "updated": "2017-08-13T17:00:57.811Z",
    //  "storageClass": "MULTI_REGIONAL",
    //  "timeStorageClassUpdated": "2017-08-13T17:00:57.811Z",
    //  "size": "777835",
    //  "md5Hash": "nTd7EM53jEk4s8fixjoimg==",
    //  "mediaLink": "https://www.googleapis.com/download/storage/v1/b/chilkat-ocean/o/penguins.jpg?generation=1502643657837855&alt=media",
    //  "crc32c": "ixxYVw==",
    //  "etag": "CJ+azOvX1NUCEAE="
    // }

    CkHttpResponse_Dispose(resp);


    CkStringBuilder_Dispose(sbToken);
    CkHttp_Dispose(http);
    CkStringBuilder_Dispose(sbPath);
    CkHttpRequest_Dispose(req);

    }

 

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