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| 1 | +// Copyright 2018 Google LLC |
| 2 | +// |
| 3 | +// Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | +// you may not use this file except in compliance with the License. |
| 5 | +// You may obtain a copy of the License at |
| 6 | +// |
| 7 | +// https://www.apache.org/licenses/LICENSE-2.0 |
| 8 | +// |
| 9 | +// Unless required by applicable law or agreed to in writing, software |
| 10 | +// distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | +// See the License for the specific language governing permissions and |
| 13 | +// limitations under the License. |
| 14 | +using NodaTime; |
| 15 | +using NodaTime.Text; |
| 16 | +using System; |
| 17 | +using System.Collections.Generic; |
| 18 | +using System.IO; |
| 19 | +using System.Linq; |
| 20 | + |
| 21 | +namespace Google.Cloud.Tools.ProcessBuildTimingLog |
| 22 | +{ |
| 23 | + /// <summary> |
| 24 | + /// Processes a build timing log created by the log_build_action function in toolversions.sh. |
| 25 | + /// This makes it easy to see how long each part of the build takes. |
| 26 | + /// </summary> |
| 27 | + class Program |
| 28 | + { |
| 29 | + private static readonly DurationPattern s_durationPattern = DurationPattern.CreateWithInvariantCulture("-HH:mm:ss"); |
| 30 | + // The text to use instead of a duration for entries with no duration |
| 31 | + private const string NoDurationText = "--------"; |
| 32 | + |
| 33 | + private const string StartPrefix = "(Start) "; |
| 34 | + private const string EndPrefix = "(End) "; |
| 35 | + |
| 36 | + private static int Main(string[] args) |
| 37 | + { |
| 38 | + if (args.Length != 1) |
| 39 | + { |
| 40 | + Console.WriteLine("Required single argument: log file path"); |
| 41 | + return 1; |
| 42 | + } |
| 43 | + string[] lines = File.ReadAllLines(args[0]); |
| 44 | + |
| 45 | + var logEntries = lines.Where(line => line.Length > 0).Select(LogEntry.FromLogLine).ToList(); |
| 46 | + |
| 47 | + for (int i = 0; i < logEntries.Count; i++) |
| 48 | + { |
| 49 | + ProcessEntry(logEntries, i); |
| 50 | + } |
| 51 | + |
| 52 | + return 0; |
| 53 | + } |
| 54 | + |
| 55 | + private static void ProcessEntry(List<LogEntry> entries, int index) |
| 56 | + { |
| 57 | + LogEntry entry = entries[index]; |
| 58 | + |
| 59 | + // Ignore any "end" actions. Assume they've already been handled (or are useless if they're orphans) |
| 60 | + if (entry.Action.StartsWith(EndPrefix)) |
| 61 | + { |
| 62 | + return; |
| 63 | + } |
| 64 | + |
| 65 | + // If we have a "start" action, find the next matching "start" or "end", and handle appropriately |
| 66 | + if (entry.Action.StartsWith(StartPrefix)) |
| 67 | + { |
| 68 | + string unprefixedAction = entry.Action.Substring(StartPrefix.Length); |
| 69 | + string expectedEndAction = EndPrefix + unprefixedAction; |
| 70 | + |
| 71 | + // Note: in theory we should probably do this by index rather than timing, but it's very unlikely |
| 72 | + // to cause issues. |
| 73 | + var nextStart = entries.Skip(index + 1).FirstOrDefault(e => e.Action.StartsWith(entry.Action)); |
| 74 | + var nextEnd = entries.Skip(index + 1).FirstOrDefault(e => e.Action.StartsWith(expectedEndAction)); |
| 75 | + if (nextEnd == null) |
| 76 | + { |
| 77 | + PrintEntry(entry.Timestamp, null, $"No matching end: {unprefixedAction}"); |
| 78 | + return; |
| 79 | + } |
| 80 | + if (nextStart != null && nextStart.Timestamp < nextEnd.Timestamp) |
| 81 | + { |
| 82 | + PrintEntry(entry.Timestamp, null, $"Matching start before end: {unprefixedAction}"); |
| 83 | + return; |
| 84 | + } |
| 85 | + // We report the action in parentheses as a simple indication that it's a compound action. |
| 86 | + PrintEntry(entry.Timestamp, nextEnd.Timestamp, $"({unprefixedAction})"); |
| 87 | + return; |
| 88 | + } |
| 89 | + // Simple case: just one line for this action. Use the next entry if we have one. |
| 90 | + if (index == entries.Count) |
| 91 | + { |
| 92 | + PrintEntry(entry.Timestamp, null, $"Final line of file: {entry.Action}"); |
| 93 | + } |
| 94 | + else |
| 95 | + { |
| 96 | + PrintEntry(entry.Timestamp, entries[index + 1].Timestamp, entry.Action); |
| 97 | + } |
| 98 | + |
| 99 | + void PrintEntry(Instant start, Instant? end, string action) |
| 100 | + { |
| 101 | + string formattedDuration = end != null |
| 102 | + ? s_durationPattern.Format(end.Value - start) |
| 103 | + : NoDurationText; |
| 104 | + Console.WriteLine($"{InstantPattern.General.Format(start)} {formattedDuration} {action}"); |
| 105 | + } |
| 106 | + } |
| 107 | + } |
| 108 | +} |
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