(Unicode C) Google Cloud Storage: Update Object Metadata

See more Google Cloud Storage Examples

Demonstrates how to update (edit) the metadata associated with an object in a Google Cloud Storage bucket.

For more information, see https://cloud.google.com/storage/docs/viewing-editing-metadata#edit

Chilkat C/C++ Library Downloads
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#include <C_CkHttpW.h>
#include <C_CkBinDataW.h>
#include <C_CkHttpResponseW.h>
#include <C_CkStringBuilderW.h>
#include <C_CkJsonObjectW.h>

void ChilkatSample(void)
    {
    HCkHttpW http;
    BOOL success;
    HCkBinDataW bdRequestBody;
    HCkHttpResponseW resp;
    HCkStringBuilderW sbResponseBody;
    HCkJsonObjectW jResp;
    int respStatusCode;

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

    http = CkHttpW_Create();

    // Implements the following CURL command:

    // curl -X PATCH --data-binary @JSON_FILE_NAME \
    //   -H "Authorization: Bearer OAUTH2_TOKEN" \
    //   -H "Content-Type: application/json" \
    //   "https://storage.googleapis.com/storage/v1/b/BUCKET_NAME/o/OBJECT_NAME"

    // Use the following online tool to generate HTTP code from a CURL command
    // Convert a cURL Command to HTTP Source Code

    bdRequestBody = CkBinDataW_Create();
    success = CkBinDataW_LoadFile(bdRequestBody,L"JSON_FILE_PATH");
    if (success != TRUE) {
        wprintf(L"Failed to load JSON_FILE_PATH\n");
        CkHttpW_Dispose(http);
        CkBinDataW_Dispose(bdRequestBody);
        return;
    }

    // Adds the "Authorization: Bearer OAUTH2_TOKEN" header.
    CkHttpW_putAuthToken(http,L"OAUTH2_TOKEN");

    resp = CkHttpW_PBinaryBd(http,L"PATCH",L"https://storage.googleapis.com/storage/v1/b/BUCKET_NAME/o/OBJECT_NAME",bdRequestBody,L"application/json",FALSE,FALSE);
    if (CkHttpW_getLastMethodSuccess(http) == FALSE) {
        wprintf(L"%s\n",CkHttpW_lastErrorText(http));
        CkHttpW_Dispose(http);
        CkBinDataW_Dispose(bdRequestBody);
        return;
    }

    sbResponseBody = CkStringBuilderW_Create();
    CkHttpResponseW_GetBodySb(resp,sbResponseBody);

    jResp = CkJsonObjectW_Create();
    CkJsonObjectW_LoadSb(jResp,sbResponseBody);
    CkJsonObjectW_putEmitCompact(jResp,FALSE);

    wprintf(L"Response Body:\n");
    wprintf(L"%s\n",CkJsonObjectW_emit(jResp));

    respStatusCode = CkHttpResponseW_getStatusCode(resp);
    wprintf(L"Response Status Code = %d\n",respStatusCode);
    if (respStatusCode >= 400) {
        wprintf(L"Response Header:\n");
        wprintf(L"%s\n",CkHttpResponseW_header(resp));
        wprintf(L"Failed.\n");
        CkHttpResponseW_Dispose(resp);
        CkHttpW_Dispose(http);
        CkBinDataW_Dispose(bdRequestBody);
        CkStringBuilderW_Dispose(sbResponseBody);
        CkJsonObjectW_Dispose(jResp);
        return;
    }

    CkHttpResponseW_Dispose(resp);


    CkHttpW_Dispose(http);
    CkBinDataW_Dispose(bdRequestBody);
    CkStringBuilderW_Dispose(sbResponseBody);
    CkJsonObjectW_Dispose(jResp);

    }