/*
* Copyright 2013 the original author or authors.
*
* 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 org.gradle.plugin.use.resolve.service.internal;
import com.google.common.cache.Cache;
import com.google.common.cache.CacheBuilder;
import org.gradle.api.Nullable;
import org.gradle.api.Transformer;
import org.gradle.internal.Factory;
import org.gradle.internal.Transformers;
import org.gradle.plugin.use.PluginId;
import org.gradle.plugin.management.internal.PluginRequestInternal;
import java.io.IOException;
public class InMemoryCachingPluginResolutionServiceClient implements PluginResolutionServiceClient {
private final Cache<Key<PluginIdentity>, Response<PluginUseMetaData>> pluginMetadataCache = CacheBuilder.newBuilder().build();
private final Cache<Key<String>, Response<ClientStatus>> statusCache = CacheBuilder.newBuilder().build();
private final PluginResolutionServiceClient delegate;
public InMemoryCachingPluginResolutionServiceClient(PluginResolutionServiceClient delegate) {
this.delegate = delegate;
}
public Response<PluginUseMetaData> queryPluginMetadata(final String portalUrl, final boolean shouldValidate, final PluginRequestInternal pluginRequest) {
Key<PluginIdentity> key = new Key<PluginIdentity>(portalUrl, new PluginIdentity(pluginRequest.getId(), pluginRequest.getVersion()));
return getResponse(
key,
pluginMetadataCache,
new Factory<Response<PluginUseMetaData>>() {
public Response<PluginUseMetaData> create() {
return delegate.queryPluginMetadata(portalUrl, shouldValidate, pluginRequest);
}
},
Transformers.constant(key)
);
}
public Response<ClientStatus> queryClientStatus(final String portalUrl, final boolean shouldValidate, @Nullable final String checksum) {
return getResponse(
checksum == null ? null : new Key<String>(portalUrl, checksum),
statusCache,
new Factory<Response<ClientStatus>>() {
public Response<ClientStatus> create() {
return delegate.queryClientStatus(portalUrl, shouldValidate, checksum);
}
},
new Transformer<Key<String>, Response<ClientStatus>>() {
public Key<String> transform(Response<ClientStatus> original) {
return new Key<String>(portalUrl, original.getClientStatusChecksum());
}
}
);
}
private <K, V> Response<V> getResponse(Key<K> key, Cache<Key<K>, Response<V>> cache, Factory<Response<V>> responseFactory, Transformer<Key<K>, ? super Response<V>> keyGenerator) {
Response<V> response = key == null ? null : cache.getIfPresent(key);
if (response != null) {
return response;
} else {
response = responseFactory.create();
if (!response.isError()) {
Key<K> actualKey = keyGenerator.transform(response);
cache.put(actualKey, response);
}
return response;
}
}
public void close() throws IOException {
try {
delegate.close();
} finally {
pluginMetadataCache.invalidateAll();
statusCache.invalidateAll();
}
}
public static class PluginIdentity {
final PluginId pluginId;
final String pluginVersion;
public PluginIdentity(PluginId pluginId, String pluginVersion) {
this.pluginId = pluginId;
this.pluginVersion = pluginVersion;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
PluginIdentity that = (PluginIdentity) o;
if (!pluginId.equals(that.pluginId)) {
return false;
}
if (!pluginVersion.equals(that.pluginVersion)) {
return false;
}
return true;
}
@Override
public int hashCode() {
int result = pluginId.hashCode();
result = 31 * result + pluginVersion.hashCode();
return result;
}
}
public static class Key<T> {
final String portalUrl;
final T value;
public Key(String portalUrl, T value) {
this.portalUrl = portalUrl;
this.value = value;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
Key key = (Key) o;
if (!portalUrl.equals(key.portalUrl)) {
return false;
}
if (!value.equals(key.value)) {
return false;
}
return true;
}
@Override
public int hashCode() {
int result = portalUrl.hashCode();
result = 31 * result + value.hashCode();
return result;
}
}
}