public async Task Can_format_payload_with_multiple_fields_correctly()
{
// Arrange
await using var ms = new MemoryStream();
await using var jsonWriter = new Utf8JsonWriter(ms);
var fields = new Dictionary <string, object>
{
{ "field1key", "field1value" },
{ "field2key", 2 },
{ "field3key", false }
};
var timestamp = new DateTime(2017, 1, 1, 1, 1, 1, DateTimeKind.Utc);
var point = new DatadogPoint(null, "measurement", fields, MetricTags.Empty, new DefaultDatadogMetricJsonWriter(), FlushInterval, timestamp);
// Act
jsonWriter.WriteStartArray();
await point.Write(jsonWriter);
jsonWriter.WriteEndArray();
await jsonWriter.FlushAsync();
var result = Encoding.UTF8.GetString(ms.ToArray());
// Assert
result.Should().Be("[{\"metric\":\"measurement.field1key\",\"points\":[[1483232461,0]],\"type\":\"gauge\",\"tags\":[]},{\"metric\":\"measurement.field2key\",\"points\":[[1483232461,2]],\"type\":\"gauge\",\"tags\":[]},{\"metric\":\"measurement.field3key\",\"points\":[[1483232461,0]],\"type\":\"gauge\",\"tags\":[]}]");
}
public void At_least_one_field_is_required()
{
// Arrange
var fields = new Dictionary <string, object>();
Action action = () =>
{
// Act
var point = new DatadogPoint(null, "measurement", fields, MetricTags.Empty, new DefaultDatadogMetricJsonWriter(), FlushInterval);
};
// Assert
action.Should().Throw <ArgumentException>();
}
public void Field_key_cannot_be_empty()
{
// Arrange
var fields = new Dictionary <string, object> {
{ string.Empty, "value" }
};
Action action = () =>
{
// Act
var point = new DatadogPoint(null, "measurement", fields, MetricTags.Empty, new DefaultDatadogMetricJsonWriter(), FlushInterval);
};
// Assert
action.Should().Throw <ArgumentException>();
}
public async Task Should_add_context_when_provided()
{
// Arrange
await using var ms = new MemoryStream();
await using var jsonWriter = new Utf8JsonWriter(ms);
var fields = new Dictionary <string, object> {
{ "key", "value" }
};
var tags = new MetricTags("tagkey", "tagvalue");
var timestamp = new DateTime(2017, 1, 1, 1, 1, 1, DateTimeKind.Utc);
var point = new DatadogPoint("context", "measurement", fields, tags, new DefaultDatadogMetricJsonWriter(), FlushInterval, timestamp);
// Act
await point.Write(jsonWriter);
await jsonWriter.FlushAsync();
var result = Encoding.UTF8.GetString(ms.ToArray());
// Assert
result.Should().Be("{\"metric\":\"context.measurement.key\",\"points\":[[1483232461,0]],\"type\":\"gauge\",\"tags\":[\"tagkey:tagvalue\"]}", "Hosted Metrics request at the moment allow tags array but its not yet used.");
}
public void Time_stamp_should_be_utc(DateTimeKind dateTimeKind, bool expected)
{
// Arrange
var fields = new Dictionary <string, object> {
{ "key", "value" }
};
var timestamp = new DateTime(2017, 1, 1, 1, 1, 1, dateTimeKind);
Action action = () =>
{
// Act
var point = new DatadogPoint(null, "measurement", fields, MetricTags.Empty, new DefaultDatadogMetricJsonWriter(), FlushInterval, timestamp);
};
// Assert
if (!expected)
{
action.Should().Throw <ArgumentException>();
}
else
{
action.Should().NotThrow();
}
}
/// <inheritdoc />
public async Task Write(Utf8JsonWriter jsonWriter, DatadogPoint point, bool writeTimestamp = true)
{
if (jsonWriter == null)
{
throw new ArgumentNullException(nameof(jsonWriter));
}
var tagsDictionary = point.Tags.ToDictionary();
var tags = tagsDictionary.Where(tag => !ExcludeTags.Contains(tag.Key));
var utcTimestamp = point.UtcTimestamp ?? DateTime.UtcNow;
tagsDictionary.TryGetValue("mtype", out var metricType);
foreach (var f in point.Fields)
{
jsonWriter.WriteStartObject();
var hasPrevious = false;
var metricWriter = new StringWriter();
if (!string.IsNullOrWhiteSpace(point.Context))
{
await metricWriter.WriteAsync(point.Context);
hasPrevious = true;
}
if (hasPrevious)
{
await metricWriter.WriteAsync(".");
}
await metricWriter.WriteAsync(point.Measurement.Replace(' ', '_'));
if (!string.IsNullOrWhiteSpace(metricType))
{
await metricWriter.WriteAsync(".");
await metricWriter.WriteAsync(metricType);
}
await metricWriter.WriteAsync(".");
await metricWriter.WriteAsync(f.Key);
var metric = metricWriter.ToString();
jsonWriter.WriteString("metric", metric);
jsonWriter.WriteStartArray("points");
jsonWriter.WriteStartArray();
jsonWriter.WriteNumberValue(DatadogSyntax.FormatTimestamp(utcTimestamp));
jsonWriter.WriteNumberValue(DatadogSyntax.FormatValue(f.Value, metric));
jsonWriter.WriteEndArray();
jsonWriter.WriteEndArray();
var datadogMetricType = DatadogSyntax.FormatMetricType(metricType);
jsonWriter.WriteString("type", datadogMetricType);
if (datadogMetricType == DatadogSyntax.Rate || datadogMetricType == DatadogSyntax.Count)
{
jsonWriter.WriteNumber("interval", point.FlushInterval.Seconds);
}
jsonWriter.WritePropertyName("tags");
jsonWriter.WriteStartArray();
foreach (var tag in tags)
{
jsonWriter.WriteStringValue($"{tag.Key}:{tag.Value}");
}
jsonWriter.WriteEndArray();
jsonWriter.WriteEndObject();
}
}
