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Merge pull request #386 from aackerman/aackerman/fix-metric-labels

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Fix documented metrics labels to work for k8s 1.16+
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Kubernetes Prow Robot 2021-03-23 11:07:36 -07:00 • committed by GitHub
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7 changed files with 51 additions and 51 deletions
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28
cmd/config-gen/utils/default.go
View file

@ -12,50 +12,50 @@ import (
// DefaultConfig returns a configuration equivalent to the former // DefaultConfig returns a configuration equivalent to the former
// pre-advanced-config settings. This means that "normal" series labels // pre-advanced-config settings. This means that "normal" series labels
// will be of the form `<prefix><<.Resource>>`, cadvisor series will be // will be of the form `<prefix><<.Resource>>`, cadvisor series will be
// of the form `container_`, and have the label `pod_name`. Any series ending // of the form `container_`, and have the label `pod`. Any series ending
// in total will be treated as a rate metric. // in total will be treated as a rate metric.
func DefaultConfig(rateInterval time.Duration, labelPrefix string) *MetricsDiscoveryConfig { func DefaultConfig(rateInterval time.Duration, labelPrefix string) *MetricsDiscoveryConfig {
return &MetricsDiscoveryConfig{ return &MetricsDiscoveryConfig{
Rules: []DiscoveryRule{ Rules: []DiscoveryRule{
// container seconds rate metrics // container seconds rate metrics
{ {
SeriesQuery: string(prom.MatchSeries("", prom.NameMatches("^container_.*"), prom.LabelNeq("container_name", "POD"), prom.LabelNeq("namespace", ""), prom.LabelNeq("pod_name", ""))), SeriesQuery: string(prom.MatchSeries("", prom.NameMatches("^container_.*"), prom.LabelNeq("container", "POD"), prom.LabelNeq("namespace", ""), prom.LabelNeq("pod", ""))),
Resources: ResourceMapping{ Resources: ResourceMapping{
Overrides: map[string]GroupResource{ Overrides: map[string]GroupResource{
"namespace": {Resource: "namespace"}, "namespace": {Resource: "namespace"},
"pod_name": {Resource: "pod"}, "pod": {Resource: "pod"},
}, },
}, },
Name: NameMapping{Matches: "^container_(.*)_seconds_total$"}, Name: NameMapping{Matches: "^container_(.*)_seconds_total$"},
MetricsQuery: fmt.Sprintf(`sum(rate(<<.Series>>{<<.LabelMatchers>>,container_name!="POD"}[%s])) by (<<.GroupBy>>)`, pmodel.Duration(rateInterval).String()), MetricsQuery: fmt.Sprintf(`sum(rate(<<.Series>>{<<.LabelMatchers>>,container!="POD"}[%s])) by (<<.GroupBy>>)`, pmodel.Duration(rateInterval).String()),
}, },
// container rate metrics // container rate metrics
{ {
SeriesQuery: string(prom.MatchSeries("", prom.NameMatches("^container_.*"), prom.LabelNeq("container_name", "POD"), prom.LabelNeq("namespace", ""), prom.LabelNeq("pod_name", ""))), SeriesQuery: string(prom.MatchSeries("", prom.NameMatches("^container_.*"), prom.LabelNeq("container", "POD"), prom.LabelNeq("namespace", ""), prom.LabelNeq("pod", ""))),
SeriesFilters: []RegexFilter{{IsNot: "^container_.*_seconds_total$"}}, SeriesFilters: []RegexFilter{{IsNot: "^container_.*_seconds_total$"}},
Resources: ResourceMapping{ Resources: ResourceMapping{
Overrides: map[string]GroupResource{ Overrides: map[string]GroupResource{
"namespace": {Resource: "namespace"}, "namespace": {Resource: "namespace"},
"pod_name": {Resource: "pod"}, "pod": {Resource: "pod"},
}, },
}, },
Name: NameMapping{Matches: "^container_(.*)_total$"}, Name: NameMapping{Matches: "^container_(.*)_total$"},
MetricsQuery: fmt.Sprintf(`sum(rate(<<.Series>>{<<.LabelMatchers>>,container_name!="POD"}[%s])) by (<<.GroupBy>>)`, pmodel.Duration(rateInterval).String()), MetricsQuery: fmt.Sprintf(`sum(rate(<<.Series>>{<<.LabelMatchers>>,container!="POD"}[%s])) by (<<.GroupBy>>)`, pmodel.Duration(rateInterval).String()),
}, },
// container non-cumulative metrics // container non-cumulative metrics
{ {
SeriesQuery: string(prom.MatchSeries("", prom.NameMatches("^container_.*"), prom.LabelNeq("container_name", "POD"), prom.LabelNeq("namespace", ""), prom.LabelNeq("pod_name", ""))), SeriesQuery: string(prom.MatchSeries("", prom.NameMatches("^container_.*"), prom.LabelNeq("container", "POD"), prom.LabelNeq("namespace", ""), prom.LabelNeq("pod", ""))),
SeriesFilters: []RegexFilter{{IsNot: "^container_.*_total$"}}, SeriesFilters: []RegexFilter{{IsNot: "^container_.*_total$"}},
Resources: ResourceMapping{ Resources: ResourceMapping{
Overrides: map[string]GroupResource{ Overrides: map[string]GroupResource{
"namespace": {Resource: "namespace"}, "namespace": {Resource: "namespace"},
"pod_name": {Resource: "pod"}, "pod": {Resource: "pod"},
}, },
}, },
Name: NameMapping{Matches: "^container_(.*)$"}, Name: NameMapping{Matches: "^container_(.*)$"},
MetricsQuery: `sum(<<.Series>>{<<.LabelMatchers>>,container_name!="POD"}) by (<<.GroupBy>>)`, MetricsQuery: `sum(<<.Series>>{<<.LabelMatchers>>,container!="POD"}) by (<<.GroupBy>>)`,
}, },
// normal non-cumulative metrics // normal non-cumulative metrics
@ -97,11 +97,11 @@ func DefaultConfig(rateInterval time.Duration, labelPrefix string) *MetricsDisco
Resources: ResourceMapping{ Resources: ResourceMapping{
Overrides: map[string]GroupResource{ Overrides: map[string]GroupResource{
"namespace": {Resource: "namespace"}, "namespace": {Resource: "namespace"},
"pod_name": {Resource: "pod"}, "pod": {Resource: "pod"},
"instance": {Resource: "node"}, "instance": {Resource: "node"},
}, },
}, },
ContainerLabel: fmt.Sprintf("%scontainer_name", labelPrefix), ContainerLabel: fmt.Sprintf("%scontainer", labelPrefix),
}, },
Memory: ResourceRule{ Memory: ResourceRule{
ContainerQuery: "sum(container_memory_working_set_bytes{<<.LabelMatchers>>}) by (<<.GroupBy>>)", ContainerQuery: "sum(container_memory_working_set_bytes{<<.LabelMatchers>>}) by (<<.GroupBy>>)",
@ -109,11 +109,11 @@ func DefaultConfig(rateInterval time.Duration, labelPrefix string) *MetricsDisco
Resources: ResourceMapping{ Resources: ResourceMapping{
Overrides: map[string]GroupResource{ Overrides: map[string]GroupResource{
"namespace": {Resource: "namespace"}, "namespace": {Resource: "namespace"},
"pod_name": {Resource: "pod"}, "pod": {Resource: "pod"},
"instance": {Resource: "node"}, "instance": {Resource: "node"},
}, },
}, },
ContainerLabel: fmt.Sprintf("%scontainer_name", labelPrefix), ContainerLabel: fmt.Sprintf("%scontainer", labelPrefix),
}, },
Window: pmodel.Duration(rateInterval), Window: pmodel.Duration(rateInterval),
}, },

26
deploy/manifests/custom-metrics-config-map.yaml
View file

@ -6,44 +6,44 @@ metadata:
data: data:
config.yaml: | config.yaml: |
rules: rules:
- seriesQuery: '{__name__=~"^container_.*",container_name!="POD",namespace!="",pod_name!=""}' - seriesQuery: '{__name__=~"^container_.*",container!="POD",namespace!="",pod!=""}'
seriesFilters: [] seriesFilters: []
resources: resources:
overrides: overrides:
namespace: namespace:
resource: namespace resource: namespace
pod_name: pod:
resource: pod resource: pod
name: name:
matches: ^container_(.*)_seconds_total$ matches: ^container_(.*)_seconds_total$
as: "" as: ""
metricsQuery: sum(rate(<<.Series>>{<<.LabelMatchers>>,container_name!="POD"}[1m])) by (<<.GroupBy>>) metricsQuery: sum(rate(<<.Series>>{<<.LabelMatchers>>,container!="POD"}[1m])) by (<<.GroupBy>>)
- seriesQuery: '{__name__=~"^container_.*",container_name!="POD",namespace!="",pod_name!=""}' - seriesQuery: '{__name__=~"^container_.*",container!="POD",namespace!="",pod!=""}'
seriesFilters: seriesFilters:
- isNot: ^container_.*_seconds_total$ - isNot: ^container_.*_seconds_total$
resources: resources:
overrides: overrides:
namespace: namespace:
resource: namespace resource: namespace
pod_name: pod:
resource: pod resource: pod
name: name:
matches: ^container_(.*)_total$ matches: ^container_(.*)_total$
as: "" as: ""
metricsQuery: sum(rate(<<.Series>>{<<.LabelMatchers>>,container_name!="POD"}[1m])) by (<<.GroupBy>>) metricsQuery: sum(rate(<<.Series>>{<<.LabelMatchers>>,container!="POD"}[1m])) by (<<.GroupBy>>)
- seriesQuery: '{__name__=~"^container_.*",container_name!="POD",namespace!="",pod_name!=""}' - seriesQuery: '{__name__=~"^container_.*",container!="POD",namespace!="",pod!=""}'
seriesFilters: seriesFilters:
- isNot: ^container_.*_total$ - isNot: ^container_.*_total$
resources: resources:
overrides: overrides:
namespace: namespace:
resource: namespace resource: namespace
pod_name: pod:
resource: pod resource: pod
name: name:
matches: ^container_(.*)$ matches: ^container_(.*)$
as: "" as: ""
metricsQuery: sum(<<.Series>>{<<.LabelMatchers>>,container_name!="POD"}) by (<<.GroupBy>>) metricsQuery: sum(<<.Series>>{<<.LabelMatchers>>,container!="POD"}) by (<<.GroupBy>>)
- seriesQuery: '{namespace!="",__name__!~"^container_.*"}' - seriesQuery: '{namespace!="",__name__!~"^container_.*"}'
seriesFilters: seriesFilters:
- isNot: .*_total$ - isNot: .*_total$
@ -80,9 +80,9 @@ data:
resource: node resource: node
namespace: namespace:
resource: namespace resource: namespace
pod_name: pod:
resource: pod resource: pod
containerLabel: container_name containerLabel: container
memory: memory:
containerQuery: sum(container_memory_working_set_bytes{<<.LabelMatchers>>}) by (<<.GroupBy>>) containerQuery: sum(container_memory_working_set_bytes{<<.LabelMatchers>>}) by (<<.GroupBy>>)
nodeQuery: sum(container_memory_working_set_bytes{<<.LabelMatchers>>,id='/'}) by (<<.GroupBy>>) nodeQuery: sum(container_memory_working_set_bytes{<<.LabelMatchers>>,id='/'}) by (<<.GroupBy>>)
@ -92,9 +92,9 @@ data:
resource: node resource: node
namespace: namespace:
resource: namespace resource: namespace
pod_name: pod:
resource: pod resource: pod
containerLabel: container_name containerLabel: container
window: 1m window: 1m
externalRules: externalRules:
- seriesQuery: '{__name__=~"^.*_queue_(length|size)$",namespace!=""}' - seriesQuery: '{__name__=~"^.*_queue_(length|size)$",namespace!=""}'

10
docs/config.md
View file

@ -31,13 +31,13 @@ might look like:
```yaml ```yaml
rules: rules:
# this rule matches cumulative cAdvisor metrics measured in seconds # this rule matches cumulative cAdvisor metrics measured in seconds
- seriesQuery: '{__name__=~"^container_.*",container_name!="POD",namespace!="",pod_name!=""}' - seriesQuery: '{__name__=~"^container_.*",container!="POD",namespace!="",pod!=""}'
resources: resources:
# skip specifying generic resource<->label mappings, and just # skip specifying generic resource<->label mappings, and just
# attach only pod and namespace resources by mapping label names to group-resources # attach only pod and namespace resources by mapping label names to group-resources
overrides: overrides:
namespace: {resource: "namespace"}, namespace: {resource: "namespace"},
pod_name: {resource: "pod"}, pod: {resource: "pod"},
# specify that the `container_` and `_seconds_total` suffixes should be removed. # specify that the `container_` and `_seconds_total` suffixes should be removed.
# this also introduces an implicit filter on metric family names # this also introduces an implicit filter on metric family names
name: name:
@ -48,7 +48,7 @@ rules:
# This is a Go template where the `.Series` and `.LabelMatchers` string values # This is a Go template where the `.Series` and `.LabelMatchers` string values
# are available, and the delimiters are `<<` and `>>` to avoid conflicts with # are available, and the delimiters are `<<` and `>>` to avoid conflicts with
# the prometheus query language # the prometheus query language
metricsQuery: "sum(rate(<<.Series>>{<<.LabelMatchers>>,container_name!="POD"}[2m])) by (<<.GroupBy>>)" metricsQuery: "sum(rate(<<.Series>>{<<.LabelMatchers>>,container!="POD"}[2m])) by (<<.GroupBy>>)"
``` ```
Discovery Discovery
@ -83,7 +83,7 @@ For example:
```yaml ```yaml
# match all cAdvisor metrics that aren't measured in seconds # match all cAdvisor metrics that aren't measured in seconds
seriesQuery: '{__name__=~"^container_.*_total",container_name!="POD",namespace!="",pod_name!=""}' seriesQuery: '{__name__=~"^container_.*_total",container!="POD",namespace!="",pod!=""}'
seriesFilters: seriesFilters:
- isNot: "^container_.*_seconds_total" - isNot: "^container_.*_seconds_total"
``` ```
@ -211,5 +211,5 @@ For example:
```yaml ```yaml
# convert cumulative cAdvisor metrics into rates calculated over 2 minutes # convert cumulative cAdvisor metrics into rates calculated over 2 minutes
metricsQuery: "sum(rate(<<.Series>>{<<.LabelMatchers>>,container_name!="POD"}[2m])) by (<<.GroupBy>>)" metricsQuery: "sum(rate(<<.Series>>{<<.LabelMatchers>>,container!="POD"}[2m])) by (<<.GroupBy>>)"
``` ```

16
docs/sample-config.yaml
View file

@ -10,16 +10,16 @@ rules:
# can be found in pkg/config/default.go # can be found in pkg/config/default.go
# this rule matches cumulative cAdvisor metrics measured in seconds # this rule matches cumulative cAdvisor metrics measured in seconds
- seriesQuery: '{__name__=~"^container_.*",container_name!="POD",namespace!="",pod_name!=""}' - seriesQuery: '{__name__=~"^container_.*",container!="POD",namespace!="",pod!=""}'
resources: resources:
# skip specifying generic resource<->label mappings, and just # skip specifying generic resource<->label mappings, and just
# attach only pod and namespace resources by mapping label names to group-resources # attach only pod and namespace resources by mapping label names to group-resources
overrides: overrides:
namespace: {resource: "namespace"}, namespace: {resource: "namespace"},
pod_name: {resource: "pod"}, pod: {resource: "pod"},
# specify that the `container_` and `_seconds_total` suffixes should be removed. # specify that the `container_` and `_seconds_total` suffixes should be removed.
# this also introduces an implicit filter on metric family names # this also introduces an implicit filter on metric family names
name: name:
# we use the value of the capture group implicitly as the API name # we use the value of the capture group implicitly as the API name
# we could also explicitly write `as: "$1"` # we could also explicitly write `as: "$1"`
matches: "^container_(.*)_seconds_total$" matches: "^container_(.*)_seconds_total$"
@ -27,19 +27,19 @@ rules:
# This is a Go template where the `.Series` and `.LabelMatchers` string values # This is a Go template where the `.Series` and `.LabelMatchers` string values
# are available, and the delimiters are `<<` and `>>` to avoid conflicts with # are available, and the delimiters are `<<` and `>>` to avoid conflicts with
# the prometheus query language # the prometheus query language
metricsQuery: "sum(rate(<<.Series>>{<<.LabelMatchers>>,container_name!="POD"}[2m])) by (<<.GroupBy>>)" metricsQuery: "sum(rate(<<.Series>>{<<.LabelMatchers>>,container!="POD"}[2m])) by (<<.GroupBy>>)"
# this rule matches cumulative cAdvisor metrics not measured in seconds # this rule matches cumulative cAdvisor metrics not measured in seconds
- seriesQuery: '{__name__=~"^container_.*_total",container_name!="POD",namespace!="",pod_name!=""}' - seriesQuery: '{__name__=~"^container_.*_total",container!="POD",namespace!="",pod!=""}'
resources: resources:
overrides: overrides:
namespace: {resource: "namespace"}, namespace: {resource: "namespace"},
pod_name: {resource: "pod"}, pod: {resource: "pod"},
seriesFilters: seriesFilters:
# since this is a superset of the query above, we introduce an additional filter here # since this is a superset of the query above, we introduce an additional filter here
- isNot: "^container_.*_seconds_total$" - isNot: "^container_.*_seconds_total$"
name: {matches: "^container_(.*)_total$"} name: {matches: "^container_(.*)_total$"}
metricsQuery: "sum(rate(<<.Series>>{<<.LabelMatchers>>,container_name!="POD"}[2m])) by (<<.GroupBy>>)" metricsQuery: "sum(rate(<<.Series>>{<<.LabelMatchers>>,container!="POD"}[2m])) by (<<.GroupBy>>)"
# this rule matches cumulative non-cAdvisor metrics # this rule matches cumulative non-cAdvisor metrics
- seriesQuery: '{namespace!="",__name__!="^container_.*"}' - seriesQuery: '{namespace!="",__name__!="^container_.*"}'
@ -52,7 +52,7 @@ rules:
# Group will be converted to a form acceptible for use as a label automatically. # Group will be converted to a form acceptible for use as a label automatically.
template: "<<.Resource>>" template: "<<.Resource>>"
# if we wanted to, we could also specify overrides here # if we wanted to, we could also specify overrides here
metricsQuery: "sum(rate(<<.Series>>{<<.LabelMatchers>>,container_name!="POD"}[2m])) by (<<.GroupBy>>)" metricsQuery: "sum(rate(<<.Series>>{<<.LabelMatchers>>,container!="POD"}[2m])) by (<<.GroupBy>>)"
# this rule matches only a single metric, explicitly naming it something else # this rule matches only a single metric, explicitly naming it something else
# It's series query *must* return only a single metric family # It's series query *must* return only a single metric family

4
pkg/custom-provider/provider_test.go
View file

@ -45,13 +45,13 @@ func setupPrometheusProvider() (provider.CustomMetricsProvider, *fakeprom.FakePr
prov, _ := NewPrometheusProvider(restMapper(), fakeKubeClient, fakeProm, namers, fakeProviderUpdateInterval, fakeProviderStartDuration) prov, _ := NewPrometheusProvider(restMapper(), fakeKubeClient, fakeProm, namers, fakeProviderUpdateInterval, fakeProviderStartDuration)
containerSel := prom.MatchSeries("", prom.NameMatches("^container_.*"), prom.LabelNeq("container_name", "POD"), prom.LabelNeq("namespace", ""), prom.LabelNeq("pod_name", "")) containerSel := prom.MatchSeries("", prom.NameMatches("^container_.*"), prom.LabelNeq("container", "POD"), prom.LabelNeq("namespace", ""), prom.LabelNeq("pod", ""))
namespacedSel := prom.MatchSeries("", prom.LabelNeq("namespace", ""), prom.NameNotMatches("^container_.*")) namespacedSel := prom.MatchSeries("", prom.LabelNeq("namespace", ""), prom.NameNotMatches("^container_.*"))
fakeProm.SeriesResults = map[prom.Selector][]prom.Series{ fakeProm.SeriesResults = map[prom.Selector][]prom.Series{
containerSel: { containerSel: {
{ {
Name: "container_some_usage", Name: "container_some_usage",
Labels: pmodel.LabelSet{"pod_name": "somepod", "namespace": "somens", "container_name": "somecont"}, Labels: pmodel.LabelSet{"pod": "somepod", "namespace": "somens", "container": "somecont"},
}, },
}, },
namespacedSel: { namespacedSel: {

12
pkg/custom-provider/series_registry_test.go
View file

@ -65,19 +65,19 @@ var seriesRegistryTestSeries = [][]prom.Series{
{ {
{ {
Name: "container_some_time_seconds_total", Name: "container_some_time_seconds_total",
Labels: pmodel.LabelSet{"pod_name": "somepod", "namespace": "somens", "container_name": "somecont"}, Labels: pmodel.LabelSet{"pod": "somepod", "namespace": "somens", "container": "somecont"},
}, },
}, },
{ {
{ {
Name: "container_some_count_total", Name: "container_some_count_total",
Labels: pmodel.LabelSet{"pod_name": "somepod", "namespace": "somens", "container_name": "somecont"}, Labels: pmodel.LabelSet{"pod": "somepod", "namespace": "somens", "container": "somecont"},
}, },
}, },
{ {
{ {
Name: "container_some_usage", Name: "container_some_usage",
Labels: pmodel.LabelSet{"pod_name": "somepod", "namespace": "somens", "container_name": "somecont"}, Labels: pmodel.LabelSet{"pod": "somepod", "namespace": "somens", "container": "somecont"},
}, },
}, },
{ {
@ -161,7 +161,7 @@ var _ = Describe("Series Registry", func() {
resourceNames: []string{"somepod1", "somepod2"}, resourceNames: []string{"somepod1", "somepod2"},
metricSelector: labels.Everything(), metricSelector: labels.Everything(),
expectedQuery: "sum(container_some_usage{namespace=\"somens\",pod_name=~\"somepod1|somepod2\",container_name!=\"POD\"}) by (pod_name)", expectedQuery: "sum(container_some_usage{namespace=\"somens\",pod=~\"somepod1|somepod2\",container!=\"POD\"}) by (pod)",
}, },
{ {
title: "container metrics counter", title: "container metrics counter",
@ -170,7 +170,7 @@ var _ = Describe("Series Registry", func() {
resourceNames: []string{"somepod1", "somepod2"}, resourceNames: []string{"somepod1", "somepod2"},
metricSelector: labels.Everything(), metricSelector: labels.Everything(),
expectedQuery: "sum(rate(container_some_count_total{namespace=\"somens\",pod_name=~\"somepod1|somepod2\",container_name!=\"POD\"}[1m])) by (pod_name)", expectedQuery: "sum(rate(container_some_count_total{namespace=\"somens\",pod=~\"somepod1|somepod2\",container!=\"POD\"}[1m])) by (pod)",
}, },
{ {
title: "container metrics seconds counter", title: "container metrics seconds counter",
@ -179,7 +179,7 @@ var _ = Describe("Series Registry", func() {
resourceNames: []string{"somepod1", "somepod2"}, resourceNames: []string{"somepod1", "somepod2"},
metricSelector: labels.Everything(), metricSelector: labels.Everything(),
expectedQuery: "sum(rate(container_some_time_seconds_total{namespace=\"somens\",pod_name=~\"somepod1|somepod2\",container_name!=\"POD\"}[1m])) by (pod_name)", expectedQuery: "sum(rate(container_some_time_seconds_total{namespace=\"somens\",pod=~\"somepod1|somepod2\",container!=\"POD\"}[1m])) by (pod)",
}, },
// namespaced metrics // namespaced metrics
{ {

6
pkg/resourceprovider/provider_test.go
View file

@ -49,9 +49,9 @@ func restMapper() apimeta.RESTMapper {
func buildPodSample(namespace, pod, container string, val float64, ts int64) *pmodel.Sample { func buildPodSample(namespace, pod, container string, val float64, ts int64) *pmodel.Sample {
return &pmodel.Sample{ return &pmodel.Sample{
Metric: pmodel.Metric{ Metric: pmodel.Metric{
"namespace": pmodel.LabelValue(namespace), "namespace": pmodel.LabelValue(namespace),
"pod_name": pmodel.LabelValue(pod), "pod": pmodel.LabelValue(pod),
"container_name": pmodel.LabelValue(container), "container": pmodel.LabelValue(container),
}, },
Value: pmodel.SampleValue(val), Value: pmodel.SampleValue(val),
Timestamp: pmodel.Time(ts), Timestamp: pmodel.Time(ts),