com.spotify.docker.client.auth.MultiRegistryAuthSupplier Maven / Gradle / Ivy
/*-
* -\-\-
* docker-client
* --
* Copyright (C) 2016 - 2017 Spotify AB
* --
* Licensed 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 com.spotify.docker.client.auth;
import com.google.common.collect.Lists;
import com.spotify.docker.client.exceptions.DockerException;
import com.spotify.docker.client.messages.RegistryAuth;
import com.spotify.docker.client.messages.RegistryConfigs;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* A RegistryAuthSupplier that combines authentication info from multiple RegistryAuthSupplier
* instances.
*
* The order of the suppliers matters: RegistryAuthSuppliers earlier in the list are
* checked first to see if they can handle authentication for the given operation before trying
* later RegistryAuthSuppliers in the list (a RegistryAuthSupplier signals that it can't handle the
* operation by returning {@code null}).
*/
public class MultiRegistryAuthSupplier implements RegistryAuthSupplier {
private final List suppliers;
public MultiRegistryAuthSupplier(final List suppliers) {
this.suppliers = suppliers;
}
@Override
public RegistryAuth authFor(final String imageName) throws DockerException {
for (RegistryAuthSupplier supplier : suppliers) {
final RegistryAuth auth = supplier.authFor(imageName);
if (auth != null) {
return auth;
}
}
return null;
}
@Override
public RegistryAuth authForSwarm() throws DockerException {
for (RegistryAuthSupplier supplier : suppliers) {
final RegistryAuth auth = supplier.authForSwarm();
if (auth != null) {
return auth;
}
}
return null;
}
@Override
public RegistryConfigs authForBuild() throws DockerException {
final Map allConfigs = new HashMap<>();
// iterate through suppliers in reverse so that the earlier suppliers in the list
// have precedence
for (RegistryAuthSupplier supplier : Lists.reverse(suppliers)) {
final RegistryConfigs configs = supplier.authForBuild();
if (configs != null && configs.configs() != null) {
allConfigs.putAll(configs.configs());
}
}
return RegistryConfigs.create(allConfigs);
}
}