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/*
 * Copyright 2012-2018 the original author or 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
 *
 *      https://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.boot.actuate.couchbase;

import java.util.HashMap;
import java.util.Map;
import java.util.stream.Collectors;

import com.couchbase.client.core.message.internal.DiagnosticsReport;
import com.couchbase.client.core.message.internal.EndpointHealth;
import com.couchbase.client.core.state.LifecycleState;

import org.springframework.boot.actuate.health.Health.Builder;

/**
 * Details of Couchbase's health.
 *
 * @author Andy Wilkinson
 */
class CouchbaseHealth {

	private final DiagnosticsReport diagnostics;

	CouchbaseHealth(DiagnosticsReport diagnostics) {
		this.diagnostics = diagnostics;
	}

	void applyTo(Builder builder) {
		builder = isCouchbaseUp(this.diagnostics) ? builder.up() : builder.down();
		builder.withDetail("sdk", this.diagnostics.sdk());
		builder.withDetail("endpoints", this.diagnostics.endpoints().stream()
				.map(this::describe).collect(Collectors.toList()));
	}

	private boolean isCouchbaseUp(DiagnosticsReport diagnostics) {
		for (EndpointHealth health : diagnostics.endpoints()) {
			LifecycleState state = health.state();
			if (state != LifecycleState.CONNECTED && state != LifecycleState.IDLE) {
				return false;
			}
		}
		return true;
	}

	private Map describe(EndpointHealth endpointHealth) {
		Map map = new HashMap<>();
		map.put("id", endpointHealth.id());
		map.put("lastActivity", endpointHealth.lastActivity());
		map.put("local", endpointHealth.local().toString());
		map.put("remote", endpointHealth.remote().toString());
		map.put("state", endpointHealth.state());
		map.put("type", endpointHealth.type());
		return map;
	}

}