Examples with ServerAdmin com.alibaba.otter.canal.protocol.AdminPacket.ServerAdmin used on opensource projects

Example 1 with ServerAdmin

use of com.alibaba.otter.canal.protocol.AdminPacket.ServerAdmin in project canal by alibaba.

the class SessionHandler method messageReceived.

public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {
    logger.info("message receives in session handler...");
    ChannelBuffer buffer = (ChannelBuffer) e.getMessage();
    Packet packet = Packet.parseFrom(buffer.readBytes(buffer.readableBytes()).array());
    try {
        String action = null;
        String message = null;
        String destination = null;
        switch(packet.getType()) {
            case SERVER:
                ServerAdmin serverAdmin = ServerAdmin.parseFrom(packet.getBody());
                action = serverAdmin.getAction();
                switch(action) {
                    case "check":
                        message = canalAdmin.check() ? "1" : "0";
                        break;
                    case "start":
                        message = canalAdmin.start() ? "1" : "0";
                        break;
                    case "stop":
                        message = canalAdmin.stop() ? "1" : "0";
                        break;
                    case "restart":
                        message = canalAdmin.restart() ? "1" : "0";
                        break;
                    case "list":
                        message = canalAdmin.getRunningInstances();
                        break;
                    default:
                        byte[] errorBytes = AdminNettyUtils.errorPacket(301, MessageFormatter.format("ServerAdmin action={} is unknown", action).getMessage());
                        AdminNettyUtils.write(ctx.getChannel(), errorBytes);
                        break;
                }
                AdminNettyUtils.write(ctx.getChannel(), AdminNettyUtils.ackPacket(message));
                break;
            case INSTANCE:
                InstanceAdmin instanceAdmin = InstanceAdmin.parseFrom(packet.getBody());
                destination = instanceAdmin.getDestination();
                action = instanceAdmin.getAction();
                switch(action) {
                    case "check":
                        message = canalAdmin.checkInstance(destination) ? "1" : "0";
                        break;
                    case "start":
                        message = canalAdmin.startInstance(destination) ? "1" : "0";
                        break;
                    case "stop":
                        message = canalAdmin.stopInstance(destination) ? "1" : "0";
                        break;
                    case "release":
                        message = canalAdmin.releaseInstance(destination) ? "1" : "0";
                        break;
                    case "restart":
                        message = canalAdmin.restartInstance(destination) ? "1" : "0";
                        break;
                    default:
                        byte[] errorBytes = AdminNettyUtils.errorPacket(301, MessageFormatter.format("InstanceAdmin action={} is unknown", action).getMessage());
                        AdminNettyUtils.write(ctx.getChannel(), errorBytes);
                        break;
                }
                AdminNettyUtils.write(ctx.getChannel(), AdminNettyUtils.ackPacket(message));
                break;
            case LOG:
                LogAdmin logAdmin = LogAdmin.parseFrom(packet.getBody());
                action = logAdmin.getAction();
                destination = logAdmin.getDestination();
                String type = logAdmin.getType();
                String file = logAdmin.getFile();
                int count = logAdmin.getCount();
                switch(type) {
                    case "server":
                        if ("list".equalsIgnoreCase(action)) {
                            message = canalAdmin.listCanalLog();
                        } else {
                            message = canalAdmin.canalLog(count);
                        }
                        break;
                    case "instance":
                        if ("list".equalsIgnoreCase(action)) {
                            message = canalAdmin.listInstanceLog(destination);
                        } else {
                            message = canalAdmin.instanceLog(destination, file, count);
                        }
                        break;
                    default:
                        byte[] errorBytes = AdminNettyUtils.errorPacket(301, MessageFormatter.format("LogAdmin type={} is unknown", type).getMessage());
                        AdminNettyUtils.write(ctx.getChannel(), errorBytes);
                        break;
                }
                AdminNettyUtils.write(ctx.getChannel(), AdminNettyUtils.ackPacket(message));
                break;
            default:
                byte[] errorBytes = AdminNettyUtils.errorPacket(300, MessageFormatter.format("packet type={} is NOT supported!", packet.getType()).getMessage());
                AdminNettyUtils.write(ctx.getChannel(), errorBytes);
                break;
        }
    } catch (Throwable exception) {
        byte[] errorBytes = AdminNettyUtils.errorPacket(400, MessageFormatter.format("something goes wrong with channel:{}, exception={}", ctx.getChannel(), ExceptionUtils.getStackTrace(exception)).getMessage());
        AdminNettyUtils.write(ctx.getChannel(), errorBytes);
    }
}