public void WriteVariablesToDiskCache(GitPreparer gitPreparer, GitVersionCacheKey cacheKey, VersionVariables variablesFromCache)
{
var cacheDir = PrepareCacheDirectory(gitPreparer);
var cacheFileName = GetCacheFileName(cacheKey, cacheDir);
variablesFromCache.FileName = cacheFileName;
Dictionary <string, string> dictionary;
using (Logger.IndentLog("Creating dictionary"))
{
dictionary = variablesFromCache.ToDictionary(x => x.Key, x => x.Value);
}
Action writeCacheOperation = () =>
{
using (var stream = fileSystem.OpenWrite(cacheFileName))
{
using (var sw = new StreamWriter(stream))
{
using (Logger.IndentLog("Storing version variables to cache file " + cacheFileName))
{
var serializer = new Serializer();
serializer.Serialize(sw, dictionary);
}
}
}
};
var retryOperation = new OperationWithExponentialBackoff <IOException>(new ThreadSleep(), writeCacheOperation, maxRetries: 6);
retryOperation.ExecuteAsync().Wait();
}
public async Task TotalSleepTimeForSixRetriesIsAboutThirtySecondsAsync()
{
const int numberOfRetries = 6;
int totalSleep = 0;
Action operation = () =>
{
throw new IOException();
};
Func <int, Task> validator = u =>
{
return(Task.Run(() =>
{
totalSleep += u;
}));
};
var retryOperation = new OperationWithExponentialBackoff <IOException>(new MockThreadSleep(validator), operation, numberOfRetries);
Task action = retryOperation.ExecuteAsync();
await action.ShouldThrowAsync <AggregateException>();
// Action action = () => retryOperation.ExecuteAsync();
// action.ShouldThrow<AggregateException>();
// Exact number is 31,5 seconds
totalSleep.ShouldBe(31500);
}
public async Task OperationDelayDoublesBetweenRetries()
{
const int numberOfRetries = 3;
var expectedSleepMSec = 500;
var sleepCount = 0;
Action operation = () => throw new IOException();
Func <int, Task> validator = u =>
{
return(Task.Run(() =>
{
sleepCount++;
u.ShouldBe(expectedSleepMSec);
expectedSleepMSec *= 2;
}));
};
var retryOperation = new OperationWithExponentialBackoff <IOException>(new MockThreadSleep(validator), operation, numberOfRetries);
Task action = retryOperation.ExecuteAsync();
await action.ShouldThrowAsync <AggregateException>();
// action.ShouldThrow<AggregateException>();
sleepCount.ShouldBe(numberOfRetries);
}
public void Execute(VersionVariables variables, OutputContext context)
{
var gitVersionOptions = options.Value;
if (gitVersionOptions.Output.Contains(OutputType.BuildServer))
{
buildAgent?.WriteIntegration(console.WriteLine, variables, context.UpdateBuildNumber ?? true);
}
if (gitVersionOptions.Output.Contains(OutputType.File))
{
var retryOperation = new OperationWithExponentialBackoff <IOException>(new ThreadSleep(), log, () => fileSystem.WriteAllText(context.OutputFile, variables.ToString()));
retryOperation.ExecuteAsync().Wait();
}
if (gitVersionOptions.Output.Contains(OutputType.Json))
{
switch (gitVersionOptions.ShowVariable)
{
case null:
console.WriteLine(variables.ToString());
break;
default:
if (!variables.TryGetValue(gitVersionOptions.ShowVariable, out var part))
{
throw new WarningException($"'{gitVersionOptions.ShowVariable}' variable does not exist");
}
console.WriteLine(part);
break;
}
}
}
public async Task TotalSleepTimeForSixRetriesIsAboutThirtySecondsAsync()
{
const int numberOfRetries = 6;
var totalSleep = 0;
void Operation()
{
throw new IOException();
}
Task Validator(int u)
{
return(Task.Run(() => { totalSleep += u; }));
}
var retryOperation = new OperationWithExponentialBackoff <IOException>(new MockThreadSleep(Validator), new NullLog(), Operation, numberOfRetries);
var action = retryOperation.ExecuteAsync();
await action.ShouldThrowAsync <AggregateException>();
// Action action = () => retryOperation.ExecuteAsync();
// action.ShouldThrow<AggregateException>();
// Exact number is 31,5 seconds
totalSleep.ShouldBe(31500);
}
public async Task OperationIsNotRetriedOnInvalidException()
{
void Operation()
{
throw new Exception();
}
var retryOperation = new OperationWithExponentialBackoff <IOException>(threadSleep, log, Operation);
var action = retryOperation.ExecuteAsync();
await action.ShouldThrowAsync <Exception>();
}
public async Task OperationIsNotRetriedOnInvalidException()
{
Action operation = () =>
{
throw new Exception();
};
var retryOperation = new OperationWithExponentialBackoff <IOException>(new MockThreadSleep(), operation);
Task action = retryOperation.ExecuteAsync();
await action.ShouldThrowAsync <Exception>();
}
public async Task OperationIsRetriedAMaximumNumberOfTimesAsync()
{
const int numberOfRetries = 3;
var operationCount = 0;
void Operation()
{
operationCount++;
throw new IOException();
}
var retryOperation = new OperationWithExponentialBackoff <IOException>(threadSleep, log, Operation, numberOfRetries);
var action = retryOperation.ExecuteAsync();
await action.ShouldThrowAsync <AggregateException>();
operationCount.ShouldBe(numberOfRetries + 1);
}
public async Task OperationIsRetriedOnIoException()
{
var operationCount = 0;
void Operation()
{
operationCount++;
if (operationCount < 2)
{
throw new IOException();
}
}
var retryOperation = new OperationWithExponentialBackoff <IOException>(threadSleep, log, Operation);
await retryOperation.ExecuteAsync();
operationCount.ShouldBe(2);
}
public async Task OperationIsRetriedOnIOException()
{
var operationCount = 0;
Action operation = () =>
{
operationCount++;
if (operationCount < 2)
{
throw new IOException();
}
};
var retryOperation = new OperationWithExponentialBackoff <IOException>(new MockThreadSleep(), operation);
await retryOperation.ExecuteAsync();
operationCount.ShouldBe(2);
}
public static VersionVariables FromFile(string filePath, IFileSystem fileSystem, ILog log)
{
try
{
if (log == null)
{
return(FromFileInternal(filePath, fileSystem));
}
var retryOperation = new OperationWithExponentialBackoff <IOException, VersionVariables>(new ThreadSleep(), log, () => FromFileInternal(filePath, fileSystem));
var versionVariables = retryOperation.ExecuteAsync().Result;
return(versionVariables);
}
catch (AggregateException ex)
{
var lastException = ex.InnerExceptions?.LastOrDefault() ?? ex.InnerException;
if (lastException != null)
{
throw lastException;
}
throw;
}
}