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Refactor of response processing #208

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Jan 3, 2023
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Original file line number Diff line number Diff line change
@@ -0,0 +1,12 @@
using System.Net;

namespace EasyNetQ.Management.Client.Internals;

internal static class HttpResponseMessageExtensions
{
public static void EnsureExpectedStatusCode(this HttpResponseMessage response, Func<HttpStatusCode, bool> isExpected)
{
if (!isExpected(response.StatusCode))
throw new UnexpectedHttpStatusCodeException(response.StatusCode);
}
}
61 changes: 14 additions & 47 deletions Source/EasyNetQ.Management.Client/ManagementClient.cs
Original file line number Diff line number Diff line change
Expand Up @@ -684,11 +684,9 @@ private async Task<T> GetAsync<T>(
using var request = CreateRequest(HttpMethod.Get, path, queryParameters);
using var response = await httpClient.SendAsync(request, cancellationToken).ConfigureAwait(false);

return await DeserializeResponseAsync<T>(
statusCode => statusCode == HttpStatusCode.OK,
response,
cancellationToken
).ConfigureAwait(false);
response.EnsureExpectedStatusCode(statusCode => statusCode == HttpStatusCode.OK);

return (await response.Content.ReadFromJsonAsync<T>(SerializerOptions, cancellationToken).ConfigureAwait(false))!;
}

private async Task<TResult> PostAsync<TItem, TResult>(
Expand All @@ -697,15 +695,13 @@ private async Task<TResult> PostAsync<TItem, TResult>(
CancellationToken cancellationToken = default
)
{
using var requestContent = CreateRequestContent(item);
using var requestContent = JsonContent.Create(item, JsonMediaTypeHeaderValue, SerializerOptions);
using var request = CreateRequest(HttpMethod.Post, path, null, requestContent);
using var response = await httpClient.SendAsync(request, cancellationToken).ConfigureAwait(false);

return await DeserializeResponseAsync<TResult>(
statusCode => statusCode is HttpStatusCode.OK or HttpStatusCode.Created or HttpStatusCode.NoContent,
response,
cancellationToken
).ConfigureAwait(false);
response.EnsureExpectedStatusCode(statusCode => statusCode is HttpStatusCode.OK or HttpStatusCode.Created or HttpStatusCode.NoContent);

return (await response.Content.ReadFromJsonAsync<TResult>(SerializerOptions, cancellationToken).ConfigureAwait(false))!;
}

private async Task PostAsync<TItem>(
Expand All @@ -714,14 +710,11 @@ private async Task PostAsync<TItem>(
CancellationToken cancellationToken = default
)
{
using var requestContent = CreateRequestContent(item);
using var requestContent = JsonContent.Create(item, JsonMediaTypeHeaderValue, SerializerOptions);
using var request = CreateRequest(HttpMethod.Post, path, null, requestContent);
using var response = await httpClient.SendAsync(request, cancellationToken).ConfigureAwait(false);

await DeserializeResponseAsync(
statusCode => statusCode is HttpStatusCode.OK or HttpStatusCode.Created or HttpStatusCode.NoContent,
response
).ConfigureAwait(false);
response.EnsureExpectedStatusCode(statusCode => statusCode is HttpStatusCode.OK or HttpStatusCode.Created or HttpStatusCode.NoContent);
}

private async Task PostAsync(
Expand All @@ -732,16 +725,15 @@ private async Task PostAsync(
using var request = CreateRequest(HttpMethod.Post, path);
using var response = await httpClient.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, cancellationToken).ConfigureAwait(false);

await DeserializeResponseAsync(statusCode => statusCode is HttpStatusCode.OK or HttpStatusCode.Created or HttpStatusCode.NoContent, response)
.ConfigureAwait(false);
response.EnsureExpectedStatusCode(statusCode => statusCode is HttpStatusCode.OK or HttpStatusCode.Created or HttpStatusCode.NoContent);
}

private async Task DeleteAsync(RelativePath path, CancellationToken cancellationToken = default)
{
using var request = CreateRequest(HttpMethod.Delete, path);
using var response = await httpClient.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, cancellationToken).ConfigureAwait(false);

await DeserializeResponseAsync(statusCode => statusCode == HttpStatusCode.NoContent, response).ConfigureAwait(false);
response.EnsureExpectedStatusCode(statusCode => statusCode == HttpStatusCode.NoContent);
}

private async Task PutAsync<T>(
Expand All @@ -750,23 +742,19 @@ private async Task PutAsync<T>(
CancellationToken cancellationToken = default
)
{
using var requestContent = CreateRequestContent(item);
using var requestContent = JsonContent.Create(item, JsonMediaTypeHeaderValue, SerializerOptions);
using var request = CreateRequest(HttpMethod.Put, path, null, requestContent);
using var response = await httpClient.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, cancellationToken).ConfigureAwait(false);

await DeserializeResponseAsync(
statusCode => statusCode is HttpStatusCode.Created or HttpStatusCode.NoContent, response
).ConfigureAwait(false);
response.EnsureExpectedStatusCode(statusCode => statusCode is HttpStatusCode.Created or HttpStatusCode.NoContent);
}

private async Task PutAsync(RelativePath path, CancellationToken cancellationToken = default)
{
using var request = CreateRequest(HttpMethod.Put, path);
using var response = await httpClient.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, cancellationToken).ConfigureAwait(false);

await DeserializeResponseAsync(
statusCode => statusCode is HttpStatusCode.Created or HttpStatusCode.NoContent, response
).ConfigureAwait(false);
response.EnsureExpectedStatusCode(statusCode => statusCode is HttpStatusCode.Created or HttpStatusCode.NoContent);
}

private HttpRequestMessage CreateRequest(
Expand All @@ -783,27 +771,6 @@ private HttpRequestMessage CreateRequest(
return request;
}

private static HttpContent CreateRequestContent<T>(T item) => JsonContent.Create(item, JsonMediaTypeHeaderValue, SerializerOptions);

private static Task DeserializeResponseAsync(Func<HttpStatusCode, bool> success, HttpResponseMessage response)
{
return success(response.StatusCode)
? Task.CompletedTask
: Task.FromException(new UnexpectedHttpStatusCodeException(response.StatusCode));
}

private static async Task<T> DeserializeResponseAsync<T>(
Func<HttpStatusCode, bool> success,
HttpResponseMessage response,
CancellationToken cancellationToken
)
{
if (!success(response.StatusCode))
throw new UnexpectedHttpStatusCodeException(response.StatusCode);

return (await response.Content.ReadFromJsonAsync<T>(SerializerOptions, cancellationToken))!;
}

private static IReadOnlyDictionary<string, string>? MergeQueryParameters(params IReadOnlyDictionary<string, string>?[]? multipleQueryParameters)
{
if (multipleQueryParameters == null || multipleQueryParameters.Length == 0)
Expand Down