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Merge pull request #8 from bloomberg/write_http
Added support for WriteHttp plugin
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,187 @@ | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Configuration; | ||
| using System.IO; | ||
| using System.Net; | ||
| using System.Text; | ||
| using NLog; | ||
|
|
||
| namespace BloombergFLP.CollectdWin | ||
| { | ||
| internal class WriteHttpPlugin : IMetricsWritePlugin | ||
| { | ||
| private static readonly Logger Logger = LogManager.GetCurrentClassLogger(); | ||
|
|
||
| private readonly IList<HttpWriter> _httpWriters; | ||
|
|
||
| public WriteHttpPlugin() | ||
| { | ||
| _httpWriters = new List<HttpWriter>(); | ||
| } | ||
|
|
||
| public void Configure() | ||
| { | ||
| var config = ConfigurationManager.GetSection("CollectdWinConfig") as CollectdWinConfig; | ||
| if (config == null) | ||
| { | ||
| throw new Exception("WriteHttpPlugin - Cannot get configuration section : CollectdWinConfig"); | ||
| } | ||
|
|
||
| _httpWriters.Clear(); | ||
|
|
||
| foreach (CollectdWinConfig.WriteHttpNodeConfig node in config.WriteHttp.Nodes) | ||
| { | ||
| var writer = new HttpWriter | ||
| { | ||
| Url = node.Url, | ||
| Timeout = node.Timeout, | ||
| BatchSize = node.BatchSize, | ||
| MaxIdleTime = node.MaxIdleTime, | ||
| EnableProxy = node.Proxy.Enable | ||
| }; | ||
|
|
||
| if (writer.EnableProxy) | ||
| { | ||
| writer.WebProxy = node.Proxy.Url.Length > 0 ? new WebProxy(node.Proxy.Url) : new WebProxy(); | ||
| } | ||
| _httpWriters.Add(writer); | ||
| } | ||
|
|
||
| Logger.Info("WriteHttp plugin configured"); | ||
| } | ||
|
|
||
| public void Start() | ||
| { | ||
| Logger.Info("WriteHttp - plugin started"); | ||
| } | ||
|
|
||
| public void Stop() | ||
| { | ||
| Logger.Info("WriteHttp - plugin stopped"); | ||
| } | ||
|
|
||
| public void Write(MetricValue metric) | ||
| { | ||
| if (metric == null) | ||
| { | ||
| Logger.Debug("write() - Invalid null metric"); | ||
| return; | ||
| } | ||
| foreach (HttpWriter writer in _httpWriters) | ||
| { | ||
| writer.Write(metric); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| internal class HttpWriter | ||
| { | ||
| private static readonly Logger Logger = LogManager.GetCurrentClassLogger(); | ||
|
|
||
| public int BatchSize = 20; | ||
| public bool EnableProxy = false; | ||
| public int MaxIdleTime; | ||
| public int Timeout; | ||
| public string Url; | ||
| public WebProxy WebProxy = null; | ||
|
|
||
| private StringBuilder _batchedMetricStr; | ||
| private int _numMetrics; | ||
|
|
||
| public void Write(MetricValue metric) | ||
| { | ||
| string message = metric.GetMetricJsonStr(); | ||
| if (_batchedMetricStr == null) | ||
| { | ||
| _batchedMetricStr = new StringBuilder("[").Append(message); | ||
| } | ||
| else | ||
| { | ||
| _batchedMetricStr.Append(",").Append(message); | ||
| } | ||
| _numMetrics++; | ||
|
|
||
| if (_numMetrics < BatchSize) return; | ||
|
|
||
| _batchedMetricStr.Append("]"); | ||
| HttpPost(_batchedMetricStr.ToString()); | ||
| _batchedMetricStr = null; | ||
| _numMetrics = 0; | ||
| } | ||
|
|
||
| public void HttpPost(string metricJsonStr) | ||
| { | ||
| HttpWebResponse response = null; | ||
| try | ||
| { | ||
| byte[] data = Encoding.UTF8.GetBytes(metricJsonStr); | ||
| var request = (HttpWebRequest) WebRequest.Create(Url); | ||
|
|
||
| request.Method = "POST"; | ||
| request.ContentType = "application/json"; | ||
| request.ContentLength = data.Length; | ||
| request.UserAgent = "CollectdWin/1.0"; | ||
| request.Accept = "*/*"; | ||
| request.KeepAlive = true; | ||
| request.Timeout = Timeout; | ||
|
|
||
| if (EnableProxy) | ||
| { | ||
| request.Proxy = WebProxy; | ||
| } | ||
| if (MaxIdleTime > 0) | ||
| { | ||
| request.ServicePoint.MaxIdleTime = MaxIdleTime; | ||
| } | ||
|
|
||
| // Display service point properties. | ||
| Logger.Trace("Connection properties: ServicePoint - HashCode:{0}, MaxIdleTime:{1}, IdleSince:{2}", | ||
| request.ServicePoint.GetHashCode(), request.ServicePoint.MaxIdleTime, request.ServicePoint.IdleSince); | ||
|
|
||
| using (Stream reqStream = request.GetRequestStream()) | ||
| { | ||
| reqStream.Write(data, 0, data.Length); | ||
| } | ||
|
|
||
| response = (HttpWebResponse) request.GetResponse(); | ||
| var statusCode = (int) response.StatusCode; | ||
| if (statusCode < 200 || statusCode >= 300) | ||
| { | ||
| Logger.Error("Got a bad response code : ", statusCode); | ||
| } | ||
|
|
||
| if (!Logger.IsTraceEnabled) return; | ||
|
|
||
| Stream respStream = response.GetResponseStream(); | ||
| string responseString = new StreamReader(respStream).ReadToEnd(); | ||
| Logger.Trace("Got response: " + responseString); | ||
| } | ||
| catch (Exception exp) | ||
| { | ||
| Logger.Error("Got exception in http post : ", exp); | ||
| } | ||
| finally | ||
| { | ||
| if (response != null) | ||
| { | ||
| response.Close(); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| // ---------------------------------------------------------------------------- | ||
| // Copyright (C) 2015 Bloomberg Finance L.P. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
| // | ||
| // ----------------------------- END-OF-FILE ---------------------------------- |
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