org.springframework.cloud.kubernetes.config.KubernetesPropertySource.java Source code

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Here is the source code for org.springframework.cloud.kubernetes.config.KubernetesPropertySource.java

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/*
 * Copyright (C) 2017 to the original 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.springframework.cloud.kubernetes.config;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.core.env.MapPropertySource;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
import java.util.Map;

/**
 * Secrets and ConfigMaps shared features.
 */
public class KubernetesPropertySource extends MapPropertySource {
    private static final Log LOG = LogFactory.getLog(KubernetesPropertySource.class);

    @SuppressWarnings("unchecked")
    protected KubernetesPropertySource(String name, Map<String, Object> source) {
        super(name, source);
    }

    protected static void putPathConfig(Map<String, ? super String> result, List<String> paths) {
        paths.stream().map(Paths::get).filter(Files::exists).forEach(p -> putAll(p, result));
    }

    private static void putAll(Path path, Map<String, ? super String> result) {
        try {
            Files.walk(path).filter(Files::isRegularFile).forEach(p -> readFile(p, result));
        } catch (IOException e) {
            LOG.warn("Error walking properties files", e);
        }
    }

    private static void readFile(Path path, Map<String, ? super String> result) {
        try {
            result.put(path.getFileName().toString(), new String(Files.readAllBytes(path)).trim());
        } catch (IOException e) {
            LOG.warn("Error reading properties file", e);
        }
    }
}