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JDBC Driver for Google Cloud Spanner
/*
* Copyright 2015, Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package nl.topicus.jdbc.shaded.com.google.auth.oauth2;
import nl.topicus.jdbc.shaded.com.google.api.client.json.GenericJson;
import nl.topicus.jdbc.shaded.com.google.api.client.json.JsonFactory;
import nl.topicus.jdbc.shaded.com.google.api.client.json.JsonObjectParser;
import nl.topicus.jdbc.shaded.com.google.api.client.util.Preconditions;
import nl.topicus.jdbc.shaded.com.google.auth.http.HttpTransportFactory;
import java.nl.topicus.jdbc.shaded.io.IOException;
import java.nl.topicus.jdbc.shaded.io.InputStream;
import java.util.Collection;
/**
* Base type for credentials for authorizing calls to Google APIs using OAuth2.
*/
public class GoogleCredentials extends OAuth2Credentials {
private static final long serialVersionUID = -1522852442442473691L;
static final String USER_FILE_TYPE = "authorized_user";
static final String SERVICE_ACCOUNT_FILE_TYPE = "service_account";
private static final DefaultCredentialsProvider defaultCredentialsProvider =
new DefaultCredentialsProvider();
/**
* Returns the Application Default Credentials.
*
* Returns the Application Default Credentials which are used to identify and authorize the
* whole application. The following are searched (in order) to find the Application Default
* Credentials:
*
* - Credentials file pointed to by the {@code GOOGLE_APPLICATION_CREDENTIALS} environment
* variable
* - Credentials provided by the Google Cloud SDK
* {@code gcloud auth application-default login} nl.topicus.jdbc.shaded.com.and
* - Google App Engine built-in credentials
* - Google Cloud Shell built-in credentials
* - Google Compute Engine built-in credentials
*
*
* @return the credentials instance.
* @throws IOException if the credentials cannot be created in the current environment.
*/
public static GoogleCredentials getApplicationDefault() throws IOException {
return getApplicationDefault(OAuth2Utils.HTTP_TRANSPORT_FACTORY);
}
/**
* Returns the Application Default Credentials.
*
* Returns the Application Default Credentials which are used to identify and authorize the
* whole application. The following are searched (in order) to find the Application Default
* Credentials:
*
* - Credentials file pointed to by the {@code GOOGLE_APPLICATION_CREDENTIALS} environment
* variable
* - Credentials provided by the Google Cloud SDK
* {@code gcloud auth application-default login} nl.topicus.jdbc.shaded.com.and
* - Google App Engine built-in credentials
* - Google Cloud Shell built-in credentials
* - Google Compute Engine built-in credentials
*
*
* @param transportFactory HTTP transport factory, creates the transport used to get access
* tokens.
* @return the credentials instance.
* @throws IOException if the credentials cannot be created in the current environment.
**/
public static GoogleCredentials getApplicationDefault(HttpTransportFactory transportFactory)
throws IOException {
Preconditions.checkNotNull(transportFactory);
return defaultCredentialsProvider.getDefaultCredentials(transportFactory);
}
/**
* Returns credentials defined by a JSON file stream.
*
* The stream can contain a Service Account key file in JSON format from the Google Developers
* Console or a stored user credential using the format supported by the Cloud SDK.
*
* @param credentialsStream the stream with the credential definition.
* @return the credential defined by the credentialsStream.
* @throws IOException if the credential cannot be created from the stream.
**/
public static GoogleCredentials fromStream(InputStream credentialsStream) throws IOException {
return fromStream(credentialsStream, OAuth2Utils.HTTP_TRANSPORT_FACTORY);
}
/**
* Returns credentials defined by a JSON file stream.
*
* The stream can contain a Service Account key file in JSON format from the Google Developers
* Console or a stored user credential using the format supported by the Cloud SDK.
*
* @param credentialsStream the stream with the credential definition.
* @param transportFactory HTTP transport factory, creates the transport used to get access
* tokens.
* @return the credential defined by the credentialsStream.
* @throws IOException if the credential cannot be created from the stream.
**/
public static GoogleCredentials fromStream(InputStream credentialsStream,
HttpTransportFactory transportFactory) throws IOException {
Preconditions.checkNotNull(credentialsStream);
Preconditions.checkNotNull(transportFactory);
JsonFactory jsonFactory = OAuth2Utils.JSON_FACTORY;
JsonObjectParser parser = new JsonObjectParser(jsonFactory);
GenericJson fileContents = parser.parseAndClose(
credentialsStream, OAuth2Utils.UTF_8, GenericJson.class);
String fileType = (String) fileContents.get("type");
if (fileType == null) {
throw new IOException("Error reading credentials from stream, 'type' field not specified.");
}
if (USER_FILE_TYPE.equals(fileType)) {
return UserCredentials.fromJson(fileContents, transportFactory);
}
if (SERVICE_ACCOUNT_FILE_TYPE.equals(fileType)) {
return ServiceAccountCredentials.fromJson(fileContents, transportFactory);
}
throw new IOException(String.format(
"Error reading credentials from stream, 'type' value '%s' not recognized."
+ " Expecting '%s' or '%s'.",
fileType, USER_FILE_TYPE, SERVICE_ACCOUNT_FILE_TYPE));
}
/**
* Default constructor.
**/
protected GoogleCredentials() {
this(null);
}
/**
* Constructor with explicit access token.
*
* @param accessToken Initial or temporary access token.
**/
public GoogleCredentials(AccessToken accessToken) {
super(accessToken);
}
/**
* Indicates whether the credentials require scopes to be specified via a call to
* {link GoogleCredentials#createScoped} before use.
*/
public boolean createScopedRequired() {
return false;
}
/**
* If the credentials support scopes, creates a copy of the the identity with the specified
* scopes; otherwise, returns the same instance.
*/
public GoogleCredentials createScoped(Collection scopes) {
return this;
}
/**
* If the credentials support domain-wide delegation, creates a copy
* of the identity so that it impersonates the specified user;
* otherwise, returns the same instance.
*/
public GoogleCredentials createDelegated(String user) {
return this;
}
}