public static Object Extract( HttpContent content, Type commandType )
{
var read = content.ReadAsAsync( commandType );
read.Wait();
//reset the internal stream position to allow the WebAPI pipeline to read it again.
content.ReadAsStreamAsync()
.ContinueWith( t =>
{
if( t.Result.CanSeek )
{
t.Result.Seek( 0, SeekOrigin.Begin );
}
} )
.Wait();
return read.Result;
}
public async Task ReadAsAsyncOfT_ReadsFromContent_ThenInvokesFormattersReadFromStreamMethod()
{
Stream contentStream = null;
string value = "42";
var contentMock = new Mock <TestableHttpContent> {
CallBase = true
};
contentMock
.Setup(
c =>
c.SerializeToStreamAsyncPublic(
It.IsAny <Stream>(),
It.IsAny <TransportContext>()
)
)
.Returns(TaskHelpers.Completed)
.Callback((Stream s, TransportContext _) => contentStream = s)
.Verifiable();
HttpContent content = contentMock.Object;
content.Headers.ContentType = _mediaType;
_formatterMock
.Setup(
f =>
f.ReadFromStreamAsync(
typeof(string),
It.IsAny <Stream>(),
It.IsAny <HttpContent>(),
It.IsAny <IFormatterLogger>()
)
)
.Returns(Task.FromResult <object>(value));
_formatterMock.Setup(f => f.CanReadType(typeof(string))).Returns(true);
var resultValue = await content.ReadAsAsync <string>(_formatters);
Assert.Same(value, resultValue);
contentMock.Verify();
_formatterMock.Verify(
f => f.ReadFromStreamAsync(typeof(string), contentStream, content, null),
Times.Once()
);
}
//This code is tightly coupled to Templeton. If parsing fails, we capture the full json payload, the error
//then log it upstream. I've left the constants here, since this is A) The only place they are used and B) there are a lot of them.
//In the future, if we see this being something that is reused, they could be moved.
//For a sample response see the large comment at the end of this file.
internal async Task<JobDetails> GetJobDetailsFromServerResponse(HttpContent content)
{
const string userArgsSection = "userargs";
const string defineSection = "define";
const string statusSection = "status";
const string jobNameKey = "hdInsightJobName=";
const string statusDirectory = "statusdir";
const string exitCodeValue = "exitValue";
const string startTimeValue = "startTime";
const string jobStatusValue = "runState";
const string hiveQueryValue = "execute";
const string outputFile = "/stdout";
const string errorFile = "/stderr";
Contract.AssertArgNotNull(content, "content");
JObject result = null;
try
{
result = await content.ReadAsAsync<JObject>();
Contract.Assert(result != null);
var outputAsvPath = (string)result[userArgsSection][statusDirectory];
var outputFolderUri = GetOutputFolderUri(outputAsvPath);
var defines = result[userArgsSection][defineSection].ToArray();
var jobNameItem = (string)defines.First(s => ((string)s).Contains(jobNameKey));
var jobName = jobNameItem.Split('=')[1];
var details = new JobDetails
{
ExitCode = (int)result[exitCodeValue],
SubmissionTime = result[statusSection][startTimeValue].ToString(),
Name = jobName,
StatusCode = (JobStatusCode)Enum.Parse(typeof(JobStatusCode), result[statusSection][jobStatusValue].ToString()),
PhysicalOutputPath = new Uri(outputFolderUri + outputFile),
LogicalOutputPath = outputAsvPath + outputFile,
ErrorOutputPath = outputFolderUri + errorFile,
Query = (string)result[userArgsSection][hiveQueryValue],
};
return details;
}
catch (Exception ex)
{
var rawJson = string.Empty;
if(result != null)
{
rawJson = result.ToString();
if (rawJson.Length > 4000)
{
//truncating the response if its large then 4000 char, in order to prevent large data in the logs
rawJson = rawJson.Substring(0, 4000);
}
}
throw new HttpParseException(string.Format(JobSubmissionConstants.UnableToParseJobDetailsLogMessage, ex.Message, rawJson));
}
}
//This code is tightly coupled to Templeton. If parsing fails, we capture the full json payload, the error
//then log it upstream.
internal async Task<string> GetJobIdFromServerResponse(HttpContent content)
{
Contract.AssertArgNotNull(content,"content");
try
{
var result = await content.ReadAsAsync<JObject>();
Contract.Assert(result != null);
JToken jobId;
Contract.Assert(result.TryGetValue(JobSubmissionConstants.JobIdPropertyName,out jobId));
Contract.Assert(jobId != null);
return jobId.ToString();
}
catch (Exception ex)
{
throw new HttpParseException(ex.Message);
}
}
//This code is tightly coupled to Templeton. If parsing fails, we capture the full json payload, the error
//then log it upstream.
internal async Task<List<string>> GetJobIdListFromServerResponse(HttpContent content)
{
Contract.AssertArgNotNull(content, "content");
try
{
var result = await content.ReadAsAsync<JArray>();
if (result == null || !result.HasValues)
{
return new List<string>();
}
var ret = result.Values<string>();
return ret.ToList();
}
catch (Exception ex)
{
throw new HttpParseException(ex.Message);
}
}
/// <summary>
/// Returns a <see cref="Task" /> that will yield an object of the specified <paramref name="type" />
/// from the <paramref name="content" /> instance.
/// </summary>
/// <remarks>This override use the built-in collection of formatters.</remarks>
/// <param name="content">The <see cref="HttpContent" /> instance from which to read.</param>
/// <param name="type">The type of the object to read.</param>
/// <param name="cancellationToken">The token to monitor for cancellation requests.</param>
/// <returns>A task object representing reading the content as an object of the specified type.</returns>
public static Task <object?> ReadAsAsync(this HttpContent content, Type type, CancellationToken cancellationToken)
{
return(content.ReadAsAsync(type, MediaTypeFormatterCollection.Default, cancellationToken));
}
/// <summary>
/// Returns a <see cref="Task" /> that will yield an object of the specified
/// type <typeparamref name="T" /> from the <paramref name="content" /> instance.
/// </summary>
/// <remarks>This override use the built-in collection of formatters.</remarks>
/// <typeparam name="T">The type of the object to read.</typeparam>
/// <param name="content">The <see cref="HttpContent" /> instance from which to read.</param>
/// <param name="cancellationToken">The token to monitor for cancellation requests.</param>
/// <returns>A task object representing reading the content as an object of the specified type.</returns>
public static Task <T> ReadAsAsync <T>(this HttpContent content, CancellationToken cancellationToken)
{
return(content.ReadAsAsync <T>(MediaTypeFormatterCollection.Default, cancellationToken));
}
/// <summary>
/// Returns a <see cref="Task" /> that will yield an object of the specified
/// type <typeparamref name="T" /> from the <paramref name="content" /> instance.
/// </summary>
/// <remarks>This override use the built-in collection of formatters.</remarks>
/// <typeparam name="T">The type of the object to read.</typeparam>
/// <param name="content">The <see cref="HttpContent" /> instance from which to read.</param>
/// <returns>A task object representing reading the content as an object of the specified type.</returns>
public static Task <T> ReadAsAsync <T>(this HttpContent content)
{
return(content.ReadAsAsync <T>(MediaTypeFormatterCollection.Default));
}
/// <summary>
/// Returns a <see cref="Task"/> that will yield an object of the specified <paramref name="type"/>
/// from the <paramref name="content"/> instance.
/// </summary>
/// <remarks>This override use the built-in collection of formatters.</remarks>
/// <param name="content">The <see cref="HttpContent"/> instance from which to read.</param>
/// <param name="type">The type of the object to read.</param>
/// <returns>A task object representing reading the content as an object of the specified type.</returns>
public static Task <object> ReadAsAsync(this HttpContent content, Type type)
{
return(content.ReadAsAsync(type, DefaultMediaTypeFormatterCollection));
}
private static async Task <NameValueCollection> ReadAsAsyncCore(HttpContent content, MediaTypeFormatter[] formatters)
{
FormDataCollection formData = await content.ReadAsAsync <FormDataCollection>(formatters);
return(formData == null ? null : formData.ReadAsNameValueCollection());
}
private static async Task<NameValueCollection> ReadAsAsyncCore(HttpContent content, MediaTypeFormatter[] formatters,
CancellationToken cancellationToken)
{
FormDataCollection formData = await content.ReadAsAsync<FormDataCollection>(formatters, cancellationToken);
return formData == null ? null : formData.ReadAsNameValueCollection();
}
public override async Task <object> DecodeAsync(System.Net.Http.HttpContent httpContent, ActionContext actionContext)
{
return(await httpContent.ReadAsAsync(actionContext.ReturnTypeDescription.TargetObjectType, new[] { actionContext.HttpClientSettings.JsonMediaTypeFormatter }).ConfigureAwait(false));
}
