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//
// ========================================================================
// Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.gcloud.session;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.security.KeyStore;
import java.security.PrivateKey;
import java.util.Properties;
import org.eclipse.jetty.util.security.Password;
import com.google.gcloud.AuthCredentials;
import com.google.gcloud.datastore.DatastoreOptions;
/**
* GCloudConfiguration
*
*
*/
public class GCloudConfiguration
{
public static final String PROJECT_ID = "projectId";
public static final String P12 = "p12";
public static final String PASSWORD = "password";
public static final String SERVICE_ACCOUNT = "serviceAccount";
private String _projectId;
private String _p12Filename;
private File _p12File;
private String _serviceAccount;
private String _passwordSet;
private String _password;
private AuthCredentials _authCredentials;
private DatastoreOptions _options;
/**
* Generate a configuration from a properties file
*
* @param propsFile
* @return
* @throws IOException
*/
public static GCloudConfiguration fromFile(String propsFile)
throws IOException
{
if (propsFile == null)
throw new IllegalArgumentException ("Null properties file");
File f = new File(propsFile);
if (!f.exists())
throw new IllegalArgumentException("No such file "+f.getAbsolutePath());
Properties props = new Properties();
try (FileInputStream is=new FileInputStream(f))
{
props.load(is);
}
GCloudConfiguration config = new GCloudConfiguration();
config.setProjectId(props.getProperty(PROJECT_ID));
config.setP12File(props.getProperty(P12));
config.setPassword(props.getProperty(PASSWORD));
config.setServiceAccount(props.getProperty(SERVICE_ACCOUNT));
return config;
}
public String getProjectId()
{
return _projectId;
}
public File getP12File()
{
return _p12File;
}
public String getServiceAccount()
{
return _serviceAccount;
}
public void setProjectId(String projectId)
{
checkForModification();
_projectId = projectId;
}
public void setP12File (String file)
{
checkForModification();
_p12Filename = file;
}
public void setServiceAccount (String serviceAccount)
{
checkForModification();
_serviceAccount = serviceAccount;
}
public void setPassword (String pwd)
{
checkForModification();
_passwordSet = pwd;
}
public DatastoreOptions getDatastoreOptions ()
throws Exception
{
if (_options == null)
{
if (_passwordSet == null && _p12Filename == null && _serviceAccount == null)
{
//When no values are explicitly presented for auth info, we are either running
//1. inside GCE environment, in which case all auth info is derived from the environment
//2. outside the GCE environment, but using a local gce dev server, in which case you
// need to set the following 2 environment/system properties
// DATASTORE_HOST: eg http://localhost:9999 - this is the host and port of a local development server
// DATASTORE_DATASET: eg myProj - this is the name of your project
_options = DatastoreOptions.defaultInstance();
}
else
{
//When running externally to GCE, you need to provide
//explicit auth info. You can either set the projectId explicitly, or you can set the
//DATASTORE_DATASET env/system property
_p12File = new File(_p12Filename);
Password p = new Password(_passwordSet);
_password = p.toString();
_options = DatastoreOptions.builder()
.projectId(_projectId)
.authCredentials(getAuthCredentials())
.build();
}
}
return _options;
}
/**
* @return
* @throws Exception
*/
public AuthCredentials getAuthCredentials()
throws Exception
{
if (_authCredentials == null)
{
if (_password == null)
throw new IllegalStateException("No password");
if (_p12File == null || !_p12File.exists())
throw new IllegalStateException("No p12 file: "+(_p12File==null?"null":_p12File.getAbsolutePath()));
if (_serviceAccount == null)
throw new IllegalStateException("No service account");
char[] pwdChars = _password.toCharArray();
KeyStore keystore = KeyStore.getInstance("PKCS12");
keystore.load(new FileInputStream(getP12File()), pwdChars);
PrivateKey privateKey = (PrivateKey) keystore.getKey("privatekey", pwdChars);
_authCredentials = AuthCredentials.createFor(getServiceAccount(), privateKey);
}
return _authCredentials;
}
/**
* @throws IllegalStateException
*/
protected void checkForModification () throws IllegalStateException
{
if (_authCredentials != null || _options != null)
throw new IllegalStateException("Cannot modify auth configuration after datastore initialized");
}
}
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