/**
* Copyright 2015-2016 Red Hat, Inc, and individual contributors.
*
* 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.wildfly.swarm.health;
import java.util.HashMap;
import java.util.Map;
import java.util.Optional;
/**
* @author Heiko Braun
* @since 23/03/16
*/
public class HealthStatus implements Status {
private static final String ID = "id";
private static final String RESULT = "result";
private static final String DATA = "data";
private static final String ESCAPED_QUOTE = "\"";
private final String name;
private Optional<Map<String, Object>> message = Optional.empty();
private State state;
HealthStatus(String name) {
this.name = name;
}
public static HealthStatus named(String name) {
return new HealthStatus(name);
}
public HealthStatus up() {
assertNamed();
this.state = State.UP;
return this;
}
private void assertNamed() {
if (null == this.name) {
throw new IllegalStateException("HealthStatus need to be named");
}
}
public HealthStatus down() {
this.state = State.DOWN;
return this;
}
public HealthStatus withAttribute(String key, String value) {
Map<String, Object> payload = getPayloadWrapper();
payload.put(key, value);
return this;
}
public HealthStatus withAttribute(String key, long value) {
Map<String, Object> payload = getPayloadWrapper();
payload.put(key, value);
return this;
}
public HealthStatus withAttribute(String key, boolean value) {
Map<String, Object> payload = getPayloadWrapper();
payload.put(key, value);
return this;
}
private Map<String, Object> getPayloadWrapper() {
if (!this.message.isPresent()) {
this.message = Optional.of(new HashMap<>());
}
return this.message.get();
}
public Optional<String> getMessage() {
return message.isPresent() ? Optional.of(toJson()) : Optional.empty();
}
public State getState() {
return state;
}
@Override
public String toJson() {
StringBuilder sb = new StringBuilder();
sb.append("{");
sb.append(ESCAPED_QUOTE).append(ID).append("\":\"").append(name).append("\",");
sb.append(ESCAPED_QUOTE).append(RESULT).append("\":\"").append(state.name()).append("\"");
if (message.isPresent()) {
sb.append(",");
sb.append(ESCAPED_QUOTE).append(DATA).append("\": {");
Map<String, Object> atts = message.get();
int i = 0;
for (String key : atts.keySet()) {
sb.append(ESCAPED_QUOTE).append(key).append("\":").append(encode(atts.get(key)));
if (i < atts.keySet().size() - 1) {
sb.append(",");
}
i++;
}
sb.append("}");
}
sb.append("}");
return sb.toString();
}
private String encode(Object o) {
String res = null;
if (o instanceof String) {
res = ESCAPED_QUOTE + o.toString() + ESCAPED_QUOTE;
} else {
res = o.toString();
}
return res;
}
}