telegraf/testutil/testutil.go

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package testutil
import (
"net"
"net/url"
"os"
"time"
"github.com/influxdata/telegraf"
"github.com/influxdata/telegraf/metric"
)
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var localhost = "localhost"
// GetLocalHost returns the DOCKER_HOST environment variable, parsing
// out any scheme or ports so that only the IP address is returned.
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func GetLocalHost() string {
if dockerHostVar := os.Getenv("DOCKER_HOST"); dockerHostVar != "" {
u, err := url.Parse(dockerHostVar)
if err != nil {
return dockerHostVar
}
// split out the ip addr from the port
host, _, err := net.SplitHostPort(u.Host)
if err != nil {
return dockerHostVar
}
return host
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}
return localhost
}
// MockMetrics returns a mock []telegraf.Metric object for using in unit tests
// of telegraf output sinks.
func MockMetrics() []telegraf.Metric {
metrics := make([]telegraf.Metric, 0)
// Create a new point batch
metrics = append(metrics, TestMetric(1.0))
return metrics
}
// TestMetric Returns a simple test point:
// measurement -> "test1" or name
// tags -> "tag1":"value1"
// value -> value
// time -> time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC)
func TestMetric(value interface{}, name ...string) telegraf.Metric {
if value == nil {
panic("Cannot use a nil value")
}
measurement := "test1"
if len(name) > 0 {
measurement = name[0]
}
tags := map[string]string{"tag1": "value1"}
pt, _ := metric.New(
measurement,
tags,
map[string]interface{}{"value": value},
time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC),
)
return pt
}