mirror of
https://github.com/prometheus/statsd_exporter.git
synced 2024-12-28 00:10:30 +00:00
add simple YAML config tests
This commit is contained in:
Brian Akins
parent
2643f1550f
commit
c9510f7f23
2 changed files with 222 additions and 51 deletions
16
mapper.go
16
mapper.go
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@ -143,6 +143,21 @@ func (m *metricMapper) initFromYAMLString(fileContents string) error {
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return fmt.Errorf("invalid match: %s", currentMapping.Match)
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}
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// check that label is correct
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for k, v := range currentMapping.Labels {
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label := fmt.Sprintf("%s=%q", k, v)
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if len(labelLineRE.FindStringSubmatch(label)) != 3 {
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return fmt.Errorf("invalid label: %s: %s", k, v)
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}
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if k == "name" && !metricNameRE.MatchString(v) {
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return fmt.Errorf("metric name '%s' doesn't match regex '%s'", v, metricNameRE)
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}
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}
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if _, ok := currentMapping.Labels["name"]; !ok {
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return fmt.Errorf("Line %d: metric mapping didn't set a metric name", i)
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}
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// Translate the glob-style metric match line into a proper regex that we
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// can use to match metrics later on.
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metricRe := strings.Replace(currentMapping.Match, ".", "\\.", -1)
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@ -156,6 +171,7 @@ func (m *metricMapper) initFromYAMLString(fileContents string) error {
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if currentMapping.Buckets == nil || len(currentMapping.Buckets) == 0 {
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currentMapping.Buckets = n.Defaults.Buckets
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}
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}
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m.mutex.Lock()
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257
mapper_test.go
257
mapper_test.go
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@ -28,30 +28,30 @@ func TestMetricMapper(t *testing.T) {
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// Config with several mapping definitions.
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{
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config: `
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# this is a comment
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# this is another
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test.dispatcher.*.*.*
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name="dispatch_events"
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processor="$1"
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action="$2"
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result="$3"
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# here is a third
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job="test_dispatcher"
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# this is a comment
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# this is another
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test.dispatcher.*.*.*
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name="dispatch_events"
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processor="$1"
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action="$2"
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result="$3"
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# here is a third
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job="test_dispatcher"
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test.my-dispatch-host01.name.dispatcher.*.*.*
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name="host_dispatch_events"
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processor="$1"
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action="$2"
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result="$3"
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job="test_dispatcher"
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test.my-dispatch-host01.name.dispatcher.*.*.*
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name="host_dispatch_events"
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processor="$1"
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action="$2"
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result="$3"
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job="test_dispatcher"
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*.*
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name="catchall"
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first="$1"
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second="$2"
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third="$3"
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job="$1-$2-$3"
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`,
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*.*
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name="catchall"
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first="$1"
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second="$2"
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third="$3"
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job="$1-$2-$3"
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`,
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mappings: map[string]map[string]string{
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"test.dispatcher.FooProcessor.send.succeeded": map[string]string{
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"name": "dispatch_events",
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@ -80,10 +80,10 @@ func TestMetricMapper(t *testing.T) {
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// Config with bad regex reference.
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{
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config: `
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test.*
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name="name"
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label="$1_foo"
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`,
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test.*
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name="name"
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label="$1_foo"
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`,
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mappings: map[string]map[string]string{
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"test.a": map[string]string{
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"name": "name",
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@ -94,10 +94,10 @@ func TestMetricMapper(t *testing.T) {
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// Config with good regex reference.
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{
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config: `
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test.*
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name="name"
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label="${1}_foo"
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`,
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test.*
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name="name"
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label="${1}_foo"
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`,
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mappings: map[string]map[string]string{
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"test.a": map[string]string{
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"name": "name",
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@ -108,53 +108,53 @@ func TestMetricMapper(t *testing.T) {
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// Config with bad metric line.
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{
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config: `
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bad--metric-line.*.*
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name="foo"
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`,
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bad--metric-line.*.*
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name="foo"
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`,
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configBad: true,
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},
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// Config with bad label line.
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{
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config: `
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test.*.*
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name=foo
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`,
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test.*.*
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name=foo
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`,
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configBad: true,
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},
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// Config with bad label line.
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{
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config: `
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test.*.*
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name="foo-name"
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`,
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test.*.*
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name="foo-name"
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`,
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configBad: true,
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},
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// Config with bad metric name.
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{
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config: `
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test.*.*
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name="0foo"
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`,
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test.*.*
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name="0foo"
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`,
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configBad: true,
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},
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// A single mapping config without a terminating newline.
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{
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config: `
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test.*
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name="name"
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label="foo"`,
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test.*
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name="name"
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label="foo"`,
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configBad: true,
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},
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// Multiple mapping configs and no terminating newline.
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{
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config: `
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test.bar
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name="name_bar"
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label="foo"
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test.bar
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name="name_bar"
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label="foo"
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test.foo
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name="name_foo"
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label="bar"`,
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test.foo
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name="name_foo"
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label="bar"`,
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configBad: true,
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},
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}
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@ -185,3 +185,158 @@ func TestMetricMapper(t *testing.T) {
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}
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}
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}
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func TestMetricMapperYAML(t *testing.T) {
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scenarios := []struct {
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config string
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configBad bool
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mappings map[string]map[string]string
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}{
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// Empty config.
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{},
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// Config with several mapping definitions.
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{
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config: `---
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mappings:
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- match: test.dispatcher.*.*.*
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labels:
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name: "dispatch_events"
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processor: "$1"
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action: "$2"
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result: "$3"
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job: "test_dispatcher"
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- match: test.my-dispatch-host01.name.dispatcher.*.*.*
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labels:
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name: "host_dispatch_events"
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processor: "$1"
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action: "$2"
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result: "$3"
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job: "test_dispatcher"
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- match: "*.*"
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labels:
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name: "catchall"
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first: "$1"
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second: "$2"
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third: "$3"
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job: "$1-$2-$3"
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`,
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mappings: map[string]map[string]string{
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"test.dispatcher.FooProcessor.send.succeeded": map[string]string{
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"name": "dispatch_events",
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"processor": "FooProcessor",
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"action": "send",
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"result": "succeeded",
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"job": "test_dispatcher",
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},
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"test.my-dispatch-host01.name.dispatcher.FooProcessor.send.succeeded": map[string]string{
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"name": "host_dispatch_events",
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"processor": "FooProcessor",
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"action": "send",
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"result": "succeeded",
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"job": "test_dispatcher",
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},
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"foo.bar": map[string]string{
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"name": "catchall",
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"first": "foo",
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"second": "bar",
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"third": "",
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"job": "foo-bar-",
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},
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"foo.bar.baz": map[string]string{},
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},
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},
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// Config with bad regex reference.
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{
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config: `---
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mappings:
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- match: test.*
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labels:
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name: "name"
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label: "$1_foo"
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`,
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mappings: map[string]map[string]string{
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"test.a": map[string]string{
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"name": "name",
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"label": "",
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},
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},
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},
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// Config with good regex reference.
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{
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config: `
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mappings:
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- match: test.*
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labels:
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name: "name"
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label: "${1}_foo"
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`,
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mappings: map[string]map[string]string{
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"test.a": map[string]string{
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"name": "name",
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"label": "a_foo",
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},
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},
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},
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// Config with bad metric line.
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{
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config: `---
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mappings:
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- match: bad--metric-line.*.*
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labels:
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name: "foo"
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`,
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configBad: true,
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},
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// Config with bad metric name.
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{
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config: `---
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mappings:
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- match: test.*.*
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labels:
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name: "0foo"
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`,
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configBad: true,
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},
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// Config with no metric name.
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{
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config: `---
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mappings:
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- match: test.*.*
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labels:
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this: "$1"
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`,
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configBad: true,
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},
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// Config with no mappings.
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{
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config: ``,
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mappings: map[string]map[string]string{},
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},
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}
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mapper := metricMapper{}
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for i, scenario := range scenarios {
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err := mapper.initFromYAMLString(scenario.config)
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if err != nil && !scenario.configBad {
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t.Fatalf("%d. Config load error: %s %s", i, scenario.config, err)
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}
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if err == nil && scenario.configBad {
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t.Fatalf("%d. Expected bad config, but loaded ok: %s", i, scenario.config)
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}
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for metric, mapping := range scenario.mappings {
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_, labels, present := mapper.getMapping(metric)
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if len(labels) == 0 && present {
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t.Fatalf("%d.%q: Expected metric to not be present", i, metric)
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}
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if len(labels) != len(mapping) {
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t.Fatalf("%d.%q: Expected %d labels, got %d", i, metric, len(mapping), len(labels))
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}
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for label, value := range labels {
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if mapping[label] != value {
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t.Fatalf("%d.%q: Expected labels %v, got %v", i, metric, mapping, labels)
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}
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}
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}
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}
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}
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