/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jclouds.rest.config;
import static com.google.common.base.Preconditions.checkNotNull;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import javax.annotation.Resource;
import javax.inject.Inject;
import javax.inject.Singleton;
import org.jclouds.collect.TransformingMap;
import org.jclouds.domain.Credentials;
import org.jclouds.domain.LoginCredentials;
import org.jclouds.json.Json;
import org.jclouds.logging.Logger;
import org.jclouds.rest.ConfiguresCredentialStore;
import com.google.common.annotations.Beta;
import com.google.common.base.Charsets;
import com.google.common.base.Function;
import com.google.common.io.ByteSource;
import com.google.inject.AbstractModule;
import com.google.inject.Provides;
import com.google.inject.TypeLiteral;
@Beta
@ConfiguresCredentialStore
public class CredentialStoreModule extends AbstractModule {
private static final Map<String, ByteSource> BACKING = new ConcurrentHashMap<String, ByteSource>();
private final Map<String, ByteSource> backing;
public CredentialStoreModule(Map<String, ByteSource> backing) {
this.backing = backing;
}
public CredentialStoreModule() {
this(null);
}
@Override
protected void configure() {
bind(new TypeLiteral<Function<Credentials, ByteSource>>() {
}).to(CredentialsToJsonByteSource.class);
bind(new TypeLiteral<Function<ByteSource, Credentials>>() {
}).to(CredentialsFromJsonByteSource.class);
if (backing != null) {
bind(new TypeLiteral<Map<String, ByteSource>>() {
}).toInstance(backing);
} else {
bind(new TypeLiteral<Map<String, ByteSource>>() {
}).toInstance(BACKING);
}
}
@Singleton
public static class CredentialsToJsonByteSource implements Function<Credentials, ByteSource> {
private final Json json;
@Inject
CredentialsToJsonByteSource(Json json) {
this.json = json;
}
@Override
public ByteSource apply(Credentials from) {
checkNotNull(from, "inputCredentials");
if (from instanceof LoginCredentials) {
LoginCredentials login = LoginCredentials.class.cast(from);
JsonLoginCredentials val = new JsonLoginCredentials();
val.user = login.getUser();
val.password = login.getOptionalPassword().orNull();
val.privateKey = login.getOptionalPrivateKey().orNull();
if (login.shouldAuthenticateSudo())
val.authenticateSudo = login.shouldAuthenticateSudo();
return ByteSource.wrap(json.toJson(val).getBytes(Charsets.UTF_8));
}
return ByteSource.wrap(json.toJson(from).getBytes(Charsets.UTF_8));
}
}
static class JsonLoginCredentials {
private String user;
private String password;
private String privateKey;
private Boolean authenticateSudo;
}
@Singleton
public static class CredentialsFromJsonByteSource implements Function<ByteSource, Credentials> {
@Resource
protected Logger logger = Logger.NULL;
private final Json json;
@Inject
CredentialsFromJsonByteSource(Json json) {
this.json = json;
}
@Override
public Credentials apply(ByteSource from) {
try {
String creds = (checkNotNull(from)).asCharSource(Charsets.UTF_8).read();
if (creds.indexOf("\"user\":") == -1) {
return json.fromJson(creds, Credentials.class);
} else {
JsonLoginCredentials val = json.fromJson(creds, JsonLoginCredentials.class);
return LoginCredentials.builder().user(val.user).password(val.password).privateKey(val.privateKey)
.authenticateSudo(Boolean.TRUE.equals(val.authenticateSudo)).build();
}
} catch (Exception e) {
logger.warn(e, "ignoring problem retrieving credentials");
return null;
}
}
}
@Provides
@Singleton
protected Map<String, Credentials> provideCredentialStore(Map<String, ByteSource> backing,
Function<Credentials, ByteSource> credentialsSerializer,
Function<ByteSource, Credentials> credentialsDeserializer) {
return new TransformingMap<String, ByteSource, Credentials>(backing, credentialsDeserializer,
credentialsSerializer);
}
}