83 lines
2.7 KiB
C#
83 lines
2.7 KiB
C#
using Logging;
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using System.Globalization;
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namespace MetricsPlugin
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{
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public class MetricsDownloader
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{
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private readonly ILog log;
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public MetricsDownloader(ILog log)
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{
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this.log = log;
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}
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public LogFile? DownloadAllMetrics(string targetName, IMetricsAccess access)
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{
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var metrics = access.GetAllMetrics();
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if (metrics == null || metrics.Sets.Length == 0 || metrics.Sets.All(s => s.Values.Length == 0)) return null;
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var headers = new[] { "timestamp" }.Concat(metrics.Sets.Select(s => s.Name)).ToArray();
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var map = CreateValueMap(metrics);
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return WriteToFile(targetName, headers, map);
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}
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private LogFile WriteToFile(string nodeName, string[] headers, Dictionary<DateTime, List<string>> map)
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{
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var file = log.CreateSubfile("csv");
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log.Log($"Downloading metrics for {nodeName} to file {file.FullFilename}");
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file.WriteRaw(string.Join(",", headers));
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foreach (var pair in map)
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{
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file.WriteRaw(string.Join(",", new[] { FormatTimestamp(pair.Key) }.Concat(pair.Value)));
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}
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return file;
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}
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private Dictionary<DateTime, List<string>> CreateValueMap(Metrics metrics)
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{
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var map = CreateForAllTimestamps(metrics);
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foreach (var metric in metrics.Sets)
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{
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AddToMap(map, metric);
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}
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return map;
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}
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private Dictionary<DateTime, List<string>> CreateForAllTimestamps(Metrics metrics)
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{
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var result = new Dictionary<DateTime, List<string>>();
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var timestamps = metrics.Sets.SelectMany(s => s.Values).Select(v => v.Timestamp).Distinct().ToArray();
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foreach (var timestamp in timestamps) result.Add(timestamp, new List<string>());
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return result;
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}
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private void AddToMap(Dictionary<DateTime, List<string>> map, MetricsSet metric)
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{
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foreach (var key in map.Keys)
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{
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map[key].Add(GetValueAtTimestamp(key, metric));
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}
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}
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private string GetValueAtTimestamp(DateTime key, MetricsSet metric)
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{
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var value = metric.Values.SingleOrDefault(v => v.Timestamp == key);
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if (value == null) return "";
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return value.Value.ToString(CultureInfo.InvariantCulture);
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}
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private string FormatTimestamp(DateTime key)
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{
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var origin = new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc);
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var diff = key - origin;
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return Math.Floor(diff.TotalSeconds).ToString(CultureInfo.InvariantCulture);
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}
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}
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}
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