(C++) Google Cloud SQL - Start Database Instance

Demonstrates how to start a Google Cloud SQL database instance.

For more information, see https://cloud.google.com/sql/docs/mysql/start-stop-restart-instance

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#include <CkStringBuilder.h>
#include <CkHttp.h>
#include <CkJsonObject.h>
#include <CkHttpResponse.h>

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

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

    CkHttp http;
    bool success;

    // Implements the following CURL command:

    // curl -X PATCH \
    // -H "Authorization: Bearer "$(gcloud auth print-access-token) \
    // -H "Content-Type: application/json; charset=utf-8" \
    // -d '{
    //   "settings": {
    //     "activationPolicy": "ALWAYS" 
    //   }
    // }' \
    // https://www.googleapis.com/sql/v1beta4/projects/project-id/instances/instance-id

    // Use this online tool to generate code from sample JSON:
    // Generate Code to Create JSON

    // The following JSON is sent in the request body.

    // {
    //   "settings": {
    //     "activationPolicy": "ALWAYS"
    //   }
    // }

    // Use "ALWAYS" to start an instance.  Use "NEVER" to stop an instance.
    CkJsonObject json;
    json.UpdateString("settings.activationPolicy","ALWAYS");

    // Causes the "Authorization: Bearer "$(gcloud auth print-access-token)" header to be added.
    http.put_AuthToken(sbToken.getAsString());

    http.SetRequestHeader("Content-Type","application/json; charset=utf-8");

    CkStringBuilder sbRequestBody;
    json.EmitSb(sbRequestBody);

    // Replace "project-id" with your actual Google project ID.
    // Replace "instance-id" with your database instance ID, which is the name of your database.  (For example, when I created my test database I named it "chilkat", and therefore my instance-id is "chilkat".)
    CkHttpResponse *resp = http.PTextSb("PATCH","https://www.googleapis.com/sql/v1beta4/projects/project-id/instances/instance-id",sbRequestBody,"utf-8","application/json",false,false);
    if (http.get_LastMethodSuccess() == false) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    CkStringBuilder sbResponseBody;
    resp->GetBodySb(sbResponseBody);
    CkJsonObject jResp;
    jResp.LoadSb(sbResponseBody);
    jResp.put_EmitCompact(false);

    std::cout << "Response Body:" << "\r\n";
    std::cout << jResp.emit() << "\r\n";

    int respStatusCode = resp->get_StatusCode();
    std::cout << "Response Status Code = " << respStatusCode << "\r\n";
    if (respStatusCode == 401) {
        std::cout << "It may be that your access token expired." << "\r\n";
        std::cout << "Try refreshing the access token by re-fetching it." << "\r\n";
    }

    if (respStatusCode >= 400) {
        std::cout << "Response Header:" << "\r\n";
        std::cout << resp->header() << "\r\n";
        std::cout << "Failed." << "\r\n";
        delete resp;
        return;
    }

    delete resp;

    // Sample JSON response:
    // (Sample code for parsing the JSON response is shown below)

    // {
    //   "kind": "sql#operation",
    //   "targetLink": "https://www.googleapis.com/sql/v1beta4/projects/project-id/instances/instance-id",
    //   "status": "PENDING",
    //   "user": "user@example.com",
    //   "insertTime": "2020-01-20T21:30:35.667Z",
    //   "operationType": "UPDATE",
    //   "name": "operation-id",
    //   "targetId": "instance-id",
    //   "selfLink": "https://www.googleapis.com/sql/v1beta4/projects/project-id/operations/operation-id",
    //   "targetProject": "project-id"
    // }

    // Sample code for parsing the JSON response...
    // Use the following 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 char *kind = jResp.stringOf("kind");
    const char *targetLink = jResp.stringOf("targetLink");
    const char *status = jResp.stringOf("status");
    const char *user = jResp.stringOf("user");
    const char *insertTime = jResp.stringOf("insertTime");
    const char *operationType = jResp.stringOf("operationType");
    const char *name = jResp.stringOf("name");
    const char *targetId = jResp.stringOf("targetId");
    const char *selfLink = jResp.stringOf("selfLink");
    const char *targetProject = jResp.stringOf("targetProject");
    }