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package dk.thoerup.circuitbreaker.web; |
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import java.util.LinkedList; |
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import javax.servlet.http.HttpServletRequest; |
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import javax.servlet.http.HttpServletResponse; |
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import dk.thoerup.circuitbreaker.CircuitBreakerManager; |
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import dk.thoerup.circuitbreaker.LoggingCircuitBreaker; |
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public class LogViewCommand implements Command{ |
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public String execute(HttpServletRequest req, HttpServletResponse resp) { |
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String breakerName = req.getParameter("breaker"); |
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LoggingCircuitBreaker breaker = (LoggingCircuitBreaker) CircuitBreakerManager.getManager().getCircuitBreaker(breakerName); |
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if (breaker == null) |
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return "<html><body><h2>No breaker named '" + breakerName + "'</h2></body></html>"; |
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StringBuilder sb = new StringBuilder(); |
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sb.append("<html><head><title>Circuitbreaker Log</title></head><body>"); |
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sb.append("<<== <a href=\"").append(req.getRequestURI()).append("?command=view&breaker=").append(breakerName).append("\">Back</a><br><br>"); |
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sb.append("<h2>CircuitBreaker Log : ").append(breakerName).append("</h2>\n"); |
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sb.append("<table border=\"1\" cellspacing=0>"); |
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LinkedList<LoggingCircuitBreaker.LogEntry> list = breaker.getLog(); |
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for (LoggingCircuitBreaker.LogEntry entry : list) { |
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sb.append("<tr><td colspan=\"2\">"); |
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sb.append( ViewCircuitBreaker.formatDate(entry.time) ).append(" : ").append(entry.event); |
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sb.append("</td></tr>"); |
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} |
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sb.append("</table>"); |
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return sb.toString(); |
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} |
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} |