package com.epam.feta.core;

/**
 * This abstract class is needed for message communication between FE and its transport adapter (TA).
 * Each adapter will be run on a new instance of JVM.
 */
public abstract class JavaAdapter {
    public JavaAdapter() {
    }
    /**
     * FE implements this method and receives the messages from TA through it.
     * @param clientId a name of the client. It is configured in FIXEdge.properties and used in BL rules in the capacity of sender or receiver.
     * @param message a message to FE (which has been received from TA) as byte array.
     */
    public native void onMessageCallback(String clientId, byte[] message);
    /**
     * FE implements this method and receives the events from TA through it.
     *      For example: event MESSAGE_DELIVERED when the message has been sent by TA.
     *
     * @param clientId a name of the client. It is configured in FIXEdge.properties and used in BL rules in the capacity of sender or receiver.
     * @param eventCode the code of event from set. There is the set of events which is reserved in FE and TA.
     * @param description event description.
     * @param message this parameter is used to know what message was cause the event
     * @see com.epam.feta.core.event.EventCode
     */
    public native void onEventCallback(String clientId, long eventCode, String description, byte[] message);
    /**
     * The method is called by FE when it starts.
     * @param prefix prefix of TA's parameters. It is declared in parameter "TransportLayer.TransportAdapters"
     * @param pathToConfigFile path to FIXEdge.properties. TA parses it.
     * @throws Exception
     */
    public abstract void init(String prefix, String pathToConfigFile) throws Exception;

    /**
     * The method is called by FE when its parameters were update in runtime.
     * @param prefix prefix of TA's parameters. It is declared in parameter "TransportLayer.TransportAdapters"
     * @param config parameters and values for TA from FIXEdge.properties as string. TA parses it.
     * @throws Exception
     */
    public abstract void reInit(String prefix, String config) throws Exception;
    /**
     * The method is called by FE to send a message to TA
     * @param clientId a name of the client. It is configured in FIXEdge.properties and used in BL rules in the capacity of sender or receiver.
     * @param message a message to TA (which has been received from FE) as byte array.
     */
    public abstract void sendMessage(String clientId, byte[] message);
    /**
     * The method is called by FE to take the parameters for monitoring tool
     * @return Name of parameter and its value(split by equals sign), this pairs will be sent to monitoring tool as is. Parameters must be split by commas.
     */
    public abstract String getMonitoringParameters();
    /**
     * The method is called by FE when it is going to stop.
     * When this method is invoked we need to stop processing the messages to FE and process messages only from FE.
     */
    public abstract void preDestroy();
    /**
     * The method is called by FE when it stops.
     */
    public abstract void destroy();
} 

package com.epam.feta.event.client;

public enum ClientState {
    CREATED, CONNECTING, CONNECTED, DISCONNECTED, RECONNECTING, AUTHORIZATION_ERROR
}