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/*
* Copyright 2015 Open Networking Laboratory
*
* 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.onosproject.cfg.impl;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.ReferenceCardinality;
import org.onosproject.cfg.ComponentConfigService;
import org.slf4j.Logger;
import java.io.File;
import static org.slf4j.LoggerFactory.getLogger;
/**
* Component responsible for automatically loading configuration file from
* configuration directory.
*/
@Component(immediate = true)
public class ComponentConfigLoader {
private static final String CFG_JSON = "../config/component-cfg.json";
static File cfgFile = new File(CFG_JSON);
private final Logger log = getLogger(getClass());
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected ComponentConfigService configService;
private ObjectNode root;
@Activate
protected void activate() {
this.loadConfigs();
log.info("Started");
}
// Loads the configurations for each component from the file in
// ../config/component-cfg.json, using the preSetProperty method.
private void loadConfigs() {
try {
if (cfgFile.exists()) {
root = (ObjectNode) new ObjectMapper().readTree(cfgFile);
root.fieldNames().
forEachRemaining(component -> root.path(component).fieldNames()
.forEachRemaining(k -> configService
.preSetProperty(component, k,
root.path(component).path(k)
.asText())));
log.info("Loaded initial component configuration from {}", cfgFile);
}
} catch (Exception e) {
log.warn("Unable to load initial component configuration from {}",
cfgFile, e);
}
}
}
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