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Si Wenyan common
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package com.github.siwenyan.common;

import org.apache.log4j.Logger;

public class DoubleAction implements IAction {
    private static Logger log = Logger.getLogger(DoubleAction.class);
    private final IAction action;
    private final IAction recover;
    private final String trace;
    private final long breakMillis;

    public DoubleAction(IAction action, IAction recover, String trace, long breakMillis) {
        this.action = action;
        if (null == recover) {
            this.recover = IAction.NO_ACTION;
        } else {
            this.recover = recover;
        }
        this.trace = trace;
        this.breakMillis = breakMillis;
    }

    public DoubleAction(IAction action, String trace, long breakMillis) {
        this(action, null, trace, breakMillis);
    }

    @Override
    public boolean execute() {
        try {
            log.debug(trace + "Take a break before first action.");
            Sys.sleep(breakMillis);
            log.debug(trace + "First Action ...");
            if (action.execute()) {
                log.debug(trace + "... first action success.");
                return true;
            } else {
                log.debug(trace + "... first action fail.");
                throw new RuntimeException("Throw Exception to handover to second action.");
            }
        } catch (Exception e) {
            log.debug(trace + "... first action error: " + e.getMessage());
            try {
                log.debug(trace + "Try recover before second action.");
                if (recover.execute()) {
                    log.debug(trace + "Take a break before second action.");
                    Sys.sleep(breakMillis);
                    log.debug("Second Action ...");
                    if (action.execute()) {
                        log.debug(trace + "... second action success");
                        return true;
                    } else {
                        log.debug(trace + "... second action fail.");
                        return false;
                    }
                } else {
                    log.debug(trace + "Recover fail.");
                    return false;
                }
            } catch (Exception e1) {
                log.debug(trace + "... recover or second action error: " + e.getMessage());
                return false;
            }
        }
    }
}