Delphi ActiveX

Google Cloud SQL - Start Database Instance

See more Google Cloud SQL Examples

Demonstrates how to start a Google Cloud SQL database instance. Delphi ActiveX

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Integer;
sbToken: TChilkatStringBuilder;
http: TChilkatHttp;
json: TChilkatJsonObject;
sbRequestBody: TChilkatStringBuilder;
resp: TChilkatHttpResponse;
sbResponseBody: TChilkatStringBuilder;
jResp: TChilkatJsonObject;
respStatusCode: Integer;
kind: WideString;
targetLink: WideString;
status: WideString;
user: WideString;
insertTime: WideString;
operationType: WideString;
name: WideString;
targetId: WideString;
selfLink: WideString;
targetProject: WideString;

begin
success := 0;

// 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..
sbToken := TChilkatStringBuilder.Create(Self);
sbToken.LoadFile('qa_data/tokens/google_cloud_sql_access_token.txt','utf-8');

http := TChilkatHttp.Create(Self);

// 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.
json := TChilkatJsonObject.Create(Self);
json.UpdateString('settings.activationPolicy','ALWAYS');

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

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

sbRequestBody := TChilkatStringBuilder.Create(Self);
json.EmitSb(sbRequestBody.ControlInterface);

// 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".)
resp := TChilkatHttpResponse.Create(Self);
success := http.HttpSb('PATCH','https://www.googleapis.com/sql/v1beta4/projects/project-id/instances/instance-id',sbRequestBody.ControlInterface,'utf-8','application/json',resp.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

sbResponseBody := TChilkatStringBuilder.Create(Self);
resp.GetBodySb(sbResponseBody.ControlInterface);
jResp := TChilkatJsonObject.Create(Self);
jResp.LoadSb(sbResponseBody.ControlInterface);
jResp.EmitCompact := 0;

Memo1.Lines.Add('Response Body:');
Memo1.Lines.Add(jResp.Emit());

respStatusCode := resp.StatusCode;
Memo1.Lines.Add('Response Status Code = ' + IntToStr(respStatusCode));
if (respStatusCode = 401) then
  begin
    Memo1.Lines.Add('It may be that your access token expired.');
    Memo1.Lines.Add('Try refreshing the access token by re-fetching it.');
  end;
if (respStatusCode >= 400) then
  begin
    Memo1.Lines.Add('Response Header:');
    Memo1.Lines.Add(resp.Header);
    Memo1.Lines.Add('Failed.');
    Exit;
  end;

// 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

kind := jResp.StringOf('kind');
targetLink := jResp.StringOf('targetLink');
status := jResp.StringOf('status');
user := jResp.StringOf('user');
insertTime := jResp.StringOf('insertTime');
operationType := jResp.StringOf('operationType');
name := jResp.StringOf('name');
targetId := jResp.StringOf('targetId');
selfLink := jResp.StringOf('selfLink');
targetProject := jResp.StringOf('targetProject');
end;