/// <inheritdoc />
public void Write(TextWriter textWriter, GraphitePoint point, bool writeTimestamp = true)
{
if (textWriter == null)
{
throw new ArgumentNullException(nameof(textWriter));
}
var hasPrevious = false;
var measurementWriter = new StringWriter();
measurementWriter.Write(_prefix);
var tagsDictionary = point.Tags.ToDictionary(GraphiteSyntax.EscapeName);
if (tagsDictionary.TryGetValue("mtype", out var metricType) && !string.IsNullOrWhiteSpace(metricType))
{
measurementWriter.Write(metricType);
hasPrevious = true;
}
if (hasPrevious)
{
measurementWriter.Write(".");
}
measurementWriter.Write(GraphiteSyntax.EscapeName(point.Measurement, true));
var tags = tagsDictionary.Where(tag => !ExcludeTags.Contains(tag.Key));
foreach (var tag in tags)
{
measurementWriter.Write('.');
measurementWriter.Write(GraphiteSyntax.EscapeName(tag.Key));
measurementWriter.Write('.');
measurementWriter.Write(tag.Value);
}
measurementWriter.Write('.');
var prefix = measurementWriter.ToString();
var utcTimestamp = point.UtcTimestamp ?? DateTime.UtcNow;
foreach (var f in point.Fields)
{
textWriter.Write(prefix);
textWriter.Write(GraphiteSyntax.EscapeName(f.Key));
textWriter.Write(' ');
textWriter.Write(GraphiteSyntax.FormatValue(f.Value));
textWriter.Write(' ');
textWriter.Write(GraphiteSyntax.FormatTimestamp(utcTimestamp));
textWriter.Write('\n');
}
}
public CustomGraphitePointTextWriter(params string[] pathNodes)
{
var stringWriter = new StringWriter();
foreach (var pathNode in pathNodes)
{
stringWriter.Write(GraphiteSyntax.EscapeName(pathNode, false));
stringWriter.Write(".");
}
_prefix = stringWriter.ToString();
}
public void Can_format_value(object value, string expected)
{
GraphiteSyntax.FormatValue(value).Should().Be(expected);
}
public void Can_format_timestamp()
{
var dateTime = new DateTime(2017, 01, 01, 1, 1, 1, DateTimeKind.Utc);
GraphiteSyntax.FormatTimestamp(dateTime).Should().Be("1483232461");
}
public void Can_format_timespan()
{
var value = TimeSpan.FromMinutes(1);
GraphiteSyntax.FormatValue(value).Should().Be("60000");
}
public void Can_escape_name(string nameOrKey, string expected)
{
GraphiteSyntax.EscapeName(nameOrKey, true).Should().Be(expected);
}
/// <inheritdoc />
public void Write(JsonWriter textWriter, HostedMetricsPoint point, bool writeTimestamp = true)
{
if (textWriter == null)
{
throw new ArgumentNullException(nameof(textWriter));
}
var hasPrevious = false;
var measurementWriter = new StringWriter();
var tagsDictionary = point.Tags.ToDictionary(GraphiteSyntax.EscapeName);
if (tagsDictionary.TryGetValue("app", out var appValue))
{
measurementWriter.Write("app.");
measurementWriter.Write(appValue);
hasPrevious = true;
}
if (tagsDictionary.TryGetValue("env", out var envValue))
{
if (hasPrevious)
{
measurementWriter.Write(".");
}
measurementWriter.Write("env.");
measurementWriter.Write(envValue);
hasPrevious = true;
}
if (tagsDictionary.TryGetValue("server", out var serverValue))
{
if (hasPrevious)
{
measurementWriter.Write(".");
}
measurementWriter.Write("server.");
measurementWriter.Write(serverValue);
hasPrevious = true;
}
if (tagsDictionary.TryGetValue("mtype", out var metricType) && !string.IsNullOrWhiteSpace(metricType))
{
if (hasPrevious)
{
measurementWriter.Write(".");
}
measurementWriter.Write(metricType);
hasPrevious = true;
}
if (!string.IsNullOrWhiteSpace(point.Context))
{
if (hasPrevious)
{
measurementWriter.Write(".");
}
measurementWriter.Write(GraphiteSyntax.EscapeName(point.Context, true));
hasPrevious = true;
}
if (hasPrevious)
{
measurementWriter.Write(".");
}
measurementWriter.Write(GraphiteSyntax.EscapeName(point.Measurement, true));
var tags = tagsDictionary.Where(tag => !ExcludeTags.Contains(tag.Key));
foreach (var tag in tags)
{
measurementWriter.Write('.');
measurementWriter.Write(GraphiteSyntax.EscapeName(tag.Key));
measurementWriter.Write('.');
measurementWriter.Write(tag.Value);
}
measurementWriter.Write('.');
var prefix = measurementWriter.ToString();
var utcTimestamp = point.UtcTimestamp ?? DateTime.UtcNow;
foreach (var f in point.Fields)
{
textWriter.WriteStartObject();
var metric = $"{prefix}{GraphiteSyntax.EscapeName(f.Key)}";
textWriter.WritePropertyName("name");
// in graphite style format. should be same as Metric field below (used for partitioning, schema matching, indexing)
textWriter.WriteValue(metric);
textWriter.WritePropertyName("metric");
// in graphite style format. should be same as Name field above (used to generate Id)
textWriter.WriteValue(metric);
textWriter.WritePropertyName("value");
textWriter.WriteValue(HostedMetricsSyntax.FormatValue(f.Value, metric));
textWriter.WritePropertyName("interval");
textWriter.WriteValue(point.FlushInterval.Seconds);
textWriter.WritePropertyName("mtype");
// not used yet. but should be one of gauge rate count counter timestamp
textWriter.WriteValue("gauge");
textWriter.WritePropertyName("unit");
// not needed or used yet
textWriter.WriteValue(string.Empty);
textWriter.WritePropertyName("time");
// unix timestamp in seconds
textWriter.WriteValue(HostedMetricsSyntax.FormatTimestamp(utcTimestamp));
textWriter.WritePropertyName("tags");
textWriter.WriteStartArray();
// TODO: Hosted Metrics requests take tags but not yet used, provided in metric tag for now.
textWriter.WriteEndArray();
textWriter.WriteEndObject();
}
}
