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using System;
using System.Collections.Generic;
using System.Net;
using System.Threading.Tasks;
using EventStore.ClientAPI.Exceptions;
using EventStore.ClientAPI.SystemData;
using EventStore.ClientAPI.Transport.Http;
using Newtonsoft.Json.Linq;
using HttpStatusCode = EventStore.ClientAPI.Transport.Http.HttpStatusCode;
namespace EventStore.ClientAPI.Projections
{
internal class ProjectionsClient
{
private readonly HttpAsyncClient _client;
private readonly TimeSpan _operationTimeout;
public ProjectionsClient(ILogger log, TimeSpan operationTimeout)
{
_operationTimeout = operationTimeout;
_client = new HttpAsyncClient(_operationTimeout);
}
public Task Enable(EndPoint endPoint, string name, UserCredentials userCredentials = null, string httpSchema = EndpointExtensions.HTTP_SCHEMA)
{
return SendPost(endPoint.ToHttpUrl(httpSchema, "/projection/{0}/command/enable", name), string.Empty, userCredentials, HttpStatusCode.OK);
}
public Task Disable(EndPoint endPoint, string name, UserCredentials userCredentials = null, string httpSchema = EndpointExtensions.HTTP_SCHEMA)
{
return SendPost(endPoint.ToHttpUrl(httpSchema, "/projection/{0}/command/disable", name), string.Empty, userCredentials, HttpStatusCode.OK);
}
public Task Abort(EndPoint endPoint, string name, UserCredentials userCredentials = null, string httpSchema = EndpointExtensions.HTTP_SCHEMA)
{
return SendPost(endPoint.ToHttpUrl(httpSchema, "/projection/{0}/command/abort", name), string.Empty, userCredentials, HttpStatusCode.OK);
}
public Task CreateOneTime(EndPoint endPoint, string query, UserCredentials userCredentials = null, string httpSchema = EndpointExtensions.HTTP_SCHEMA)
{
return SendPost(endPoint.ToHttpUrl(httpSchema, "/projections/onetime?type=JS"), query, userCredentials, HttpStatusCode.Created);
}
public Task CreateTransient(EndPoint endPoint, string name, string query, UserCredentials userCredentials = null, string httpSchema = EndpointExtensions.HTTP_SCHEMA)
{
return SendPost(
endPoint.ToHttpUrl(httpSchema, "/projections/transient?name={0}&type=JS", name),
query,
userCredentials,
HttpStatusCode.Created);
}
public Task CreateContinuous(EndPoint endPoint, string name, string query, bool trackEmitted, UserCredentials userCredentials = null, string httpSchema = EndpointExtensions.HTTP_SCHEMA)
{
return SendPost(endPoint.ToHttpUrl(httpSchema, "/projections/continuous?name={0}&type=JS&emit=1&trackemittedstreams={1}", name, trackEmitted),
query, userCredentials, HttpStatusCode.Created);
}
[Obsolete("Use 'Task<List<ProjectionDetails>> ListAll' instead")]
public Task<string> ListAllAsString(EndPoint endPoint, UserCredentials userCredentials = null, string httpSchema = EndpointExtensions.HTTP_SCHEMA)
{
return SendGet(endPoint.ToHttpUrl(httpSchema, "/projections/any"), userCredentials, HttpStatusCode.OK);
}
public Task<List<ProjectionDetails>> ListAll(EndPoint endPoint, UserCredentials userCredentials = null, string httpSchema = EndpointExtensions.HTTP_SCHEMA)
{
return SendGet(endPoint.ToHttpUrl(httpSchema, "/projections/any"), userCredentials, HttpStatusCode.OK)
.ContinueWith(x =>
{
if (x.IsFaulted) throw x.Exception;
var r = JObject.Parse(x.Result);
return r["projections"] != null ? r["projections"].ToObject<List<ProjectionDetails>>() : null;
});
}
[Obsolete("Use 'Task<List<ProjectionDetails>> ListOneTime' instead")]
public Task<string> ListOneTimeAsString(EndPoint endPoint, UserCredentials userCredentials = null, string httpSchema = EndpointExtensions.HTTP_SCHEMA)
{
return SendGet(endPoint.ToHttpUrl(httpSchema, "/projections/onetime"), userCredentials, HttpStatusCode.OK);
}
public Task<List<ProjectionDetails>> ListOneTime(EndPoint endPoint, UserCredentials userCredentials = null, string httpSchema = EndpointExtensions.HTTP_SCHEMA)
{
return SendGet(endPoint.ToHttpUrl(httpSchema, "/projections/onetime"), userCredentials, HttpStatusCode.OK)
.ContinueWith(x =>
{
if (x.IsFaulted) throw x.Exception;
var r = JObject.Parse(x.Result);
return r["projections"] != null ? r["projections"].ToObject<List<ProjectionDetails>>() : null;
});
}
[Obsolete("Use 'Task<List<ProjectionDetails>> ListContinuous' instead")]
public Task<string> ListContinuousAsString(EndPoint endPoint, UserCredentials userCredentials = null, string httpSchema = EndpointExtensions.HTTP_SCHEMA)
{
return SendGet(endPoint.ToHttpUrl(httpSchema, "/projections/continuous"), userCredentials, HttpStatusCode.OK);
}
public Task<List<ProjectionDetails>> ListContinuous(EndPoint endPoint, UserCredentials userCredentials = null, string httpSchema = EndpointExtensions.HTTP_SCHEMA)
{
return SendGet(endPoint.ToHttpUrl(httpSchema, "/projections/continuous"), userCredentials, HttpStatusCode.OK)
.ContinueWith(x =>
{
if (x.IsFaulted) throw x.Exception;
var r = JObject.Parse(x.Result);
return r["projections"] != null ? r["projections"].ToObject<List<ProjectionDetails>>() : null;
});
}
public Task<string> GetStatus(EndPoint endPoint, string name, UserCredentials userCredentials = null, string httpSchema = EndpointExtensions.HTTP_SCHEMA)
{
return SendGet(endPoint.ToHttpUrl(httpSchema, "/projection/{0}", name), userCredentials, HttpStatusCode.OK);
}
public Task<string> GetState(EndPoint endPoint, string name, UserCredentials userCredentials = null, string httpSchema = EndpointExtensions.HTTP_SCHEMA)
{
return SendGet(endPoint.ToHttpUrl(httpSchema, "/projection/{0}/state", name), userCredentials, HttpStatusCode.OK);
}
public Task<string> GetPartitionStateAsync(EndPoint endPoint, string name, string partition, UserCredentials userCredentials = null, string httpSchema = EndpointExtensions.HTTP_SCHEMA)
{
return SendGet(endPoint.ToHttpUrl(httpSchema, "/projection/{0}/state?partition={1}", name, partition), userCredentials, HttpStatusCode.OK);
}
public Task<string> GetResult(EndPoint endPoint, string name, UserCredentials userCredentials = null, string httpSchema = EndpointExtensions.HTTP_SCHEMA)
{
return SendGet(endPoint.ToHttpUrl(httpSchema, "/projection/{0}/result", name), userCredentials, HttpStatusCode.OK);
}
public Task<string> GetPartitionResultAsync(EndPoint endPoint, string name, string partition, UserCredentials userCredentials = null, string httpSchema = EndpointExtensions.HTTP_SCHEMA)
{
return SendGet(endPoint.ToHttpUrl(httpSchema, "/projection/{0}/result?partition={1}", name, partition), userCredentials, HttpStatusCode.OK);
}
public Task<string> GetStatistics(EndPoint endPoint, string name, UserCredentials userCredentials = null, string httpSchema = EndpointExtensions.HTTP_SCHEMA)
{
return SendGet(endPoint.ToHttpUrl(httpSchema, "/projection/{0}/statistics", name), userCredentials, HttpStatusCode.OK);
}
public Task<string> GetQuery(EndPoint endPoint, string name, UserCredentials userCredentials = null, string httpSchema = EndpointExtensions.HTTP_SCHEMA)
{
return SendGet(endPoint.ToHttpUrl(httpSchema, "/projection/{0}/query", name), userCredentials, HttpStatusCode.OK);
}
public Task UpdateQuery(EndPoint endPoint, string name, string query, UserCredentials userCredentials = null, string httpSchema = EndpointExtensions.HTTP_SCHEMA)
{
return SendPut(endPoint.ToHttpUrl(httpSchema, "/projection/{0}/query?type=JS", name), query, userCredentials, HttpStatusCode.OK);
}
public Task UpdateQuery(EndPoint endPoint, string name, string query, UserCredentials userCredentials = null, string httpSchema = EndpointExtensions.HTTP_SCHEMA, bool? emitEnabled = null)
{
var emit = emitEnabled.HasValue ? (emitEnabled.Value ? "1" : "0") : string.Empty;
var url = emitEnabled.HasValue ? "/projection/{0}/query?emit={1}" : "/projection/{0}/query";
return SendPut(endPoint.ToHttpUrl(httpSchema, url, name, emit), query, userCredentials, HttpStatusCode.OK);
}
public Task Delete(EndPoint endPoint, string name, bool deleteEmittedStreams, UserCredentials userCredentials = null, string httpSchema = EndpointExtensions.HTTP_SCHEMA)
{
return SendDelete(endPoint.ToHttpUrl(httpSchema, "/projection/{0}?deleteEmittedStreams={1}", name, deleteEmittedStreams), userCredentials, HttpStatusCode.OK);
}
private Task<string> SendGet(string url, UserCredentials userCredentials, int expectedCode)
{
var source = new TaskCompletionSource<string>(TaskCreationOptions.RunContinuationsAsynchronously);
_client.Get(url,
userCredentials,
response =>
{
if (response.HttpStatusCode == expectedCode)
source.SetResult(response.Body);
else
source.SetException(new ProjectionCommandFailedException(
response.HttpStatusCode,
string.Format("Server returned {0} ({1}) for GET on {2}",
response.HttpStatusCode,
response.StatusDescription,
url)));
},
source.SetException);
return source.Task;
}
private Task<string> SendDelete(string url, UserCredentials userCredentials, int expectedCode)
{
var source = new TaskCompletionSource<string>(TaskCreationOptions.RunContinuationsAsynchronously);
_client.Delete(url,
userCredentials,
response =>
{
if (response.HttpStatusCode == expectedCode)
source.SetResult(response.Body);
else
source.SetException(new ProjectionCommandFailedException(
response.HttpStatusCode,
string.Format("Server returned {0} ({1}) for DELETE on {2}",
response.HttpStatusCode,
response.StatusDescription,
url)));
},
source.SetException);
return source.Task;
}
private Task SendPut(string url, string content, UserCredentials userCredentials, int expectedCode)
{
var source = new TaskCompletionSource<object>(TaskCreationOptions.RunContinuationsAsynchronously);
_client.Put(url,
content,
"application/json",
userCredentials,
response =>
{
if (response.HttpStatusCode == expectedCode)
source.SetResult(null);
else
source.SetException(new ProjectionCommandFailedException(
response.HttpStatusCode,
string.Format("Server returned {0} ({1}) for PUT on {2}",
response.HttpStatusCode,
response.StatusDescription,
url)));
},
source.SetException);
return source.Task;
}
private Task SendPost(string url, string content, UserCredentials userCredentials, int expectedCode)
{
var source = new TaskCompletionSource<object>(TaskCreationOptions.RunContinuationsAsynchronously);
_client.Post(url,
content,
"application/json",
userCredentials,
response =>
{
if (response.HttpStatusCode == expectedCode)
source.SetResult(null);
else if (response.HttpStatusCode == 409)
source.SetException(new ProjectionCommandConflictException(response.HttpStatusCode, response.StatusDescription));
else
source.SetException(new ProjectionCommandFailedException(
response.HttpStatusCode,
string.Format("Server returned {0} ({1}) for POST on {2}",
response.HttpStatusCode,
response.StatusDescription,
url)));
},
source.SetException);
return source.Task;
}
}
}