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https://github.com/grafana/grafana.git
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6c1de260a2
Adds support for logs (specify level), metrics (enable metrics and Prometheus /metrics endpoint and traces (jaeger or otlp) for standalone API server. This will allow any grafana core service part of standalone apiserver to use logging, metrics and traces as normal.
44 lines
1.1 KiB
Go
44 lines
1.1 KiB
Go
package tracing
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import (
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func TestInitSampler(t *testing.T) {
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otel := &TracingService{}
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otel.cfg = NewEmptyTracingConfig()
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sampler, err := otel.initSampler()
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require.NoError(t, err)
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assert.Equal(t, "AlwaysOffSampler", sampler.Description())
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otel.cfg.Sampler = "bogus"
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_, err = otel.initSampler()
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require.Error(t, err)
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otel.cfg.Sampler = "const"
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otel.cfg.SamplerParam = 0.5
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_, err = otel.initSampler()
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require.Error(t, err)
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otel.cfg.Sampler = "const"
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otel.cfg.SamplerParam = 1.0
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sampler, err = otel.initSampler()
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require.NoError(t, err)
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assert.Equal(t, "AlwaysOnSampler", sampler.Description())
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otel.cfg.Sampler = "probabilistic"
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otel.cfg.SamplerParam = 0.5
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sampler, err = otel.initSampler()
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require.NoError(t, err)
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assert.Equal(t, "TraceIDRatioBased{0.5}", sampler.Description())
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otel.cfg.Sampler = "rateLimiting"
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otel.cfg.SamplerParam = 100.25
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sampler, err = otel.initSampler()
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require.NoError(t, err)
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assert.Equal(t, "RateLimitingSampler{100.25}", sampler.Description())
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}
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