com.hazelcast.internal.config.override.EnvVariablesConfigParser Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2020, Hazelcast, Inc. All Rights Reserved.
*
* 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.hazelcast.internal.config.override;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import static java.util.stream.Collectors.toMap;
/**
* A utility class converting raw input properties into valid config entries.
*/
class EnvVariablesConfigParser {
private static final List EXCLUDED_ENTRIES = Arrays.asList(
"HZ_HOME", "HZ_LICENSE_KEY", "HZ_PHONE_HOME_ENABLED", "HZ_CP_MOUNT");
private final String prefix;
private final String rootNode;
EnvVariablesConfigParser(String prefix, String rootNode) {
this.prefix = prefix;
this.rootNode = rootNode;
}
static EnvVariablesConfigParser client() {
return new EnvVariablesConfigParser("HZCLIENT_", "hazelcast-client");
}
static EnvVariablesConfigParser member() {
return new EnvVariablesConfigParser("HZ_", "hazelcast");
}
Map parse(Map env) {
return env.entrySet()
.stream()
.filter(e -> !EXCLUDED_ENTRIES.contains(e.getKey().replace(" ", "")))
.filter(e -> e.getKey().startsWith(prefix))
.collect(toMap(this::processKey, Map.Entry::getValue));
}
private String processKey(Map.Entry e) {
return e.getKey()
.replaceFirst(prefix, rootNode + ".")
.replace("_", ".")
.replace(" ", "")
.toLowerCase();
}
}