com.netflix.spinnaker.kork.archaius.SpringEnvironmentPolledConfigurationSource.java Source code

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Here is the source code for com.netflix.spinnaker.kork.archaius.SpringEnvironmentPolledConfigurationSource.java

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/*
 * Copyright 2015 Netflix, Inc.
 *
 * 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.netflix.spinnaker.kork.archaius;

import com.netflix.config.PollResult;
import com.netflix.config.PolledConfigurationSource;
import com.netflix.spinnaker.kork.internal.Precondition;
import org.springframework.core.env.ConfigurableEnvironment;
import org.springframework.core.env.EnumerablePropertySource;

import java.util.HashMap;
import java.util.Map;
import java.util.Optional;

public class SpringEnvironmentPolledConfigurationSource implements PolledConfigurationSource {

    private final ConfigurableEnvironment environment;

    public SpringEnvironmentPolledConfigurationSource(ConfigurableEnvironment environment) {
        this.environment = Precondition.notNull(environment, "environment");
    }

    @Override
    public PollResult poll(boolean initial, Object checkPoint) throws Exception {
        Map<String, Object> result = new HashMap<>();
        environment.getPropertySources().iterator().forEachRemaining(source -> {
            if (source instanceof EnumerablePropertySource) {
                EnumerablePropertySource<?> enumerable = (EnumerablePropertySource<?>) source;
                for (String key : enumerable.getPropertyNames()) {
                    result.putIfAbsent(key, enumerable.getProperty(key));
                }
            }
        });
        return PollResult.createFull(result);
    }
}