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using System;
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using System.Diagnostics;
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using System.IO;
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namespace Implab.Diagnostics {
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public class SimpleTraceListener : TextWriterTraceListener {
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public SimpleTraceListener() {
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}
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public SimpleTraceListener(Stream stream) : base(stream) {
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}
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public SimpleTraceListener(TextWriter writer) : base(writer) {
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}
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public SimpleTraceListener(string fileName) : base(fileName) {
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}
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public SimpleTraceListener(Stream stream, string name) : base(stream, name) {
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}
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public SimpleTraceListener(TextWriter writer, string name) : base(writer, name) {
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}
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public SimpleTraceListener(string fileName, string name) : base(fileName, name) {
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}
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public override void TraceData(TraceEventCache eventCache, string source, TraceEventType eventType, int id, object data) {
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switch (id) {
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case TraceEventCodes.StartLogicalOperation:
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TraceEvent(eventCache, source, eventType, id, "+{0}", data);
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break;
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case TraceEventCodes.StopLogicalOperation:
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TraceEvent(eventCache, source, eventType, id, FormatStopLogicalOperation(data));
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break;
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default:
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TraceEvent(eventCache, source, eventType, id, data?.ToString());
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break;
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}
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}
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string FormatStopLogicalOperation(object data) {
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if (data is LogicalOperation op) {
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return string.Format("-{0} ({1})", op, FormatTimespan(op.Elapsed));
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} else {
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return data?.ToString();
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}
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}
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string FormatTimespan(TimeSpan value) {
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if (value.TotalSeconds < 10) {
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return value.Milliseconds.ToString() + "ms";
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} else if (value.TotalSeconds < 30) {
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return string.Format("{0:0.###}s", value.TotalSeconds);
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} else {
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return value.ToString();
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}
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}
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public override void TraceData(TraceEventCache eventCache, string source, TraceEventType eventType, int id, params object[] data) {
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var prev = IndentLevel;
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IndentLevel += eventCache.LogicalOperationStack.Count;
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try {
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base.TraceData(eventCache, source, eventType, id, data);
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} finally {
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IndentLevel = prev;
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}
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}
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public override void TraceEvent(TraceEventCache eventCache, string source, TraceEventType eventType, int id) {
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var prev = IndentLevel;
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IndentLevel += eventCache.LogicalOperationStack.Count;
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try {
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base.TraceEvent(eventCache, source, eventType, id);
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} finally {
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IndentLevel = prev;
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}
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}
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public override void TraceEvent(TraceEventCache eventCache, string source, TraceEventType eventType, int id, string format, params object[] args) {
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TraceEvent(eventCache, source, eventType, id, String.Format(format, args));
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}
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public override void TraceEvent(TraceEventCache eventCache, string source, TraceEventType eventType, int id, string message) {
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var prev = IndentLevel;
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IndentLevel += eventCache.LogicalOperationStack.Count;
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try {
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LogicalOperation operation = null;
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if (eventCache.LogicalOperationStack.Count > 0)
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operation = eventCache.LogicalOperationStack.Peek() as LogicalOperation;
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if (operation != null) {
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base.TraceData(eventCache, source, eventType, id, FormatTimespan(operation.Elapsed) + ": " + message);
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} else {
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base.TraceData(eventCache, source, eventType, id, message);
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}
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} finally {
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IndentLevel = prev;
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}
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}
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public override void TraceTransfer(TraceEventCache eventCache, string source, int id, string message, Guid relatedActivityId) {
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var prev = IndentLevel;
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IndentLevel += eventCache.LogicalOperationStack.Count;
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try {
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base.TraceTransfer(eventCache, source, id, message, relatedActivityId);
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} finally {
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IndentLevel = prev;
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}
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}
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}
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}
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