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...rc/main/java/dev/knative/eventing/kafka/broker/core/oidc/OIDCDiscoveryConfigListener.java
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| /* | ||
| * Copyright © 2018 Knative Authors ([email protected]) | ||
| * | ||
| * 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 dev.knative.eventing.kafka.broker.core.oidc; | ||
|
|
||
| import dev.knative.eventing.kafka.broker.core.features.FeaturesConfig; | ||
| import dev.knative.eventing.kafka.broker.core.file.FileWatcher; | ||
| import io.vertx.core.Vertx; | ||
| import java.io.File; | ||
| import java.io.IOException; | ||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
| import java.util.Objects; | ||
| import java.util.concurrent.ExecutionException; | ||
| import java.util.concurrent.TimeUnit; | ||
| import java.util.concurrent.TimeoutException; | ||
| import java.util.function.Consumer; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
||
| public class OIDCDiscoveryConfigListener implements AutoCloseable { | ||
| private static final Logger logger = LoggerFactory.getLogger(OIDCDiscoveryConfigListener.class); | ||
| private final String featuresConfigPath; | ||
| private final Vertx vertx; | ||
| private final FileWatcher configFeaturesWatcher; | ||
| private final int timeoutSeconds; | ||
| private List<Consumer<OIDCDiscoveryConfig>> callbacks; | ||
| private OIDCDiscoveryConfig oidcDiscoveryConfig; | ||
|
|
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| public OIDCDiscoveryConfigListener(String featuresConfigPath, Vertx vertx, int timeoutSeconds) throws IOException { | ||
| this.featuresConfigPath = featuresConfigPath; | ||
| this.vertx = vertx; | ||
| this.timeoutSeconds = timeoutSeconds; | ||
|
|
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| this.oidcDiscoveryConfig = this.buildFeaturesAndOIDCDiscoveryConfig(); | ||
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| this.configFeaturesWatcher = new FileWatcher(new File(featuresConfigPath), () -> { | ||
| if (this.oidcDiscoveryConfig == null) { | ||
| this.oidcDiscoveryConfig = this.buildFeaturesAndOIDCDiscoveryConfig(); | ||
| if (this.oidcDiscoveryConfig != null && this.callbacks != null) { | ||
| this.callbacks.stream().filter(Objects::nonNull).forEach(c -> c.accept(this.oidcDiscoveryConfig)); | ||
| } | ||
| } | ||
| }); | ||
|
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| this.configFeaturesWatcher.start(); | ||
| } | ||
|
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| public OIDCDiscoveryConfig getOidcDiscoveryConfig() { | ||
| return oidcDiscoveryConfig; | ||
| } | ||
|
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| public int registerCallback(Consumer<OIDCDiscoveryConfig> callback) { | ||
| if (this.callbacks == null) { | ||
| this.callbacks = new ArrayList<>(); | ||
| } | ||
|
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| this.callbacks.add(callback); | ||
|
|
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| return this.callbacks.size(); | ||
| } | ||
|
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| public void deregisterCallback(int callbackId) { | ||
| this.callbacks.set(callbackId, null); | ||
| } | ||
|
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| private OIDCDiscoveryConfig buildOIDCDiscoveryConfig() | ||
| throws ExecutionException, InterruptedException, TimeoutException { | ||
| this.oidcDiscoveryConfig = OIDCDiscoveryConfig.build(this.vertx) | ||
| .toCompletionStage() | ||
| .toCompletableFuture() | ||
| .get(this.timeoutSeconds, TimeUnit.SECONDS); | ||
|
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| return this.oidcDiscoveryConfig; | ||
| } | ||
|
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| private OIDCDiscoveryConfig buildFeaturesAndOIDCDiscoveryConfig() { | ||
| try { | ||
| FeaturesConfig featuresConfig = new FeaturesConfig(featuresConfigPath); | ||
| if (featuresConfig.isAuthenticationOIDC()) { | ||
| try { | ||
| return this.buildOIDCDiscoveryConfig(); | ||
| } catch (ExecutionException | InterruptedException | TimeoutException e) { | ||
| logger.error("Unable to build OIDC Discover Config even though OIDC authentication is enabled", e); | ||
| } | ||
| } | ||
| } catch (IOException e) { | ||
| logger.warn("failed to get feature config, skipping building OIDC Discovery Config", e); | ||
| } | ||
|
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| return null; | ||
| } | ||
|
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| @Override | ||
| public void close() throws Exception { | ||
| this.configFeaturesWatcher.close(); | ||
| } | ||
| } |
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