com.googlesource.gerrit.plugins.rabbitmq.config.AMQProperties.java Source code

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Here is the source code for com.googlesource.gerrit.plugins.rabbitmq.config.AMQProperties.java

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// Copyright (C) 2015 The Android Open Source Project
//
// 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.googlesource.gerrit.plugins.rabbitmq.config;

import com.google.gerrit.common.TimeUtil;

import com.googlesource.gerrit.plugins.rabbitmq.annotation.MessageHeader;
import com.googlesource.gerrit.plugins.rabbitmq.config.section.Message;
import com.googlesource.gerrit.plugins.rabbitmq.config.section.Section;
import com.rabbitmq.client.AMQP;

import org.apache.commons.codec.CharEncoding;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.lang.reflect.Field;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

public class AMQProperties {

    public static final String EVENT_APPID = "gerrit";
    public static final String CONTENT_TYPE_JSON = "application/json";

    private static final Logger LOGGER = LoggerFactory.getLogger(AMQProperties.class);

    private final Message message;
    private final Map<String, Object> headers;

    public AMQProperties(PluginProperties properties) {
        this.message = properties.getSection(Message.class);
        this.headers = new HashMap<>();
        for (Section section : properties.getSections()) {
            for (Field f : section.getClass().getFields()) {
                if (f.isAnnotationPresent(MessageHeader.class)) {
                    MessageHeader mh = f.getAnnotation(MessageHeader.class);
                    try {
                        Object value = f.get(section);
                        if (value == null) {
                            continue;
                        }
                        switch (f.getType().getSimpleName()) {
                        case "String":
                            headers.put(mh.value(), value.toString());
                            break;
                        case "Integer":
                            headers.put(mh.value(), Integer.valueOf(value.toString()));
                            break;
                        case "Long":
                            headers.put(mh.value(), Long.valueOf(value.toString()));
                            break;
                        case "Boolean":
                            headers.put(mh.value(), Boolean.valueOf(value.toString()));
                            break;
                        default:
                            break;
                        }
                    } catch (IllegalAccessException | IllegalArgumentException ex) {
                        LOGGER.warn("Cannot access field {}. Cause: {}", f.getName(), ex.getMessage());
                    }
                }
            }
        }
    }

    public AMQP.BasicProperties getBasicProperties() {
        return new AMQP.BasicProperties.Builder().appId(EVENT_APPID).contentEncoding(CharEncoding.UTF_8)
                .contentType(CONTENT_TYPE_JSON).deliveryMode(message.deliveryMode).priority(message.priority)
                .headers(headers).timestamp(new Date(TimeUtil.nowMs())).build();
    }
}