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Query Prometheus API for stats.

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Signed-off-by: Alex Ellis <alexellis2@gmail.com>
This commit is contained in:
Alex Ellis
2017-09-07 09:15:27 +01:00
parent 820bea13d2
commit 5339fdcdbe
6 changed files with 292 additions and 19 deletions
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34
gateway/handlers/reader.go
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@ -16,8 +16,6 @@ import (
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/filters"
"github.com/docker/docker/client"
"github.com/prometheus/client_golang/prometheus"
io_prometheus_client "github.com/prometheus/client_model/go"
)
// MakeFunctionReader gives a summary of Function structs with Docker service stats overlaid with Prometheus counters.
@ -41,8 +39,10 @@ func MakeFunctionReader(metricsOptions metrics.MetricOptions, c *client.Client)
for _, service := range services {
if len(service.Spec.TaskTemplate.ContainerSpec.Labels["function"]) > 0 {
invocations := getCounterValue(service.Spec.Name, "200", &metricsOptions) +
getCounterValue(service.Spec.Name, "500", &metricsOptions)
// Ping counters
// getCounterValue(service.Spec.Name, "200", &metricsOptions)
// getCounterValue(service.Spec.Name, "500", &metricsOptions)
var envProcess string
@ -55,7 +55,7 @@ func MakeFunctionReader(metricsOptions metrics.MetricOptions, c *client.Client)
f := requests.Function{
Name: service.Spec.Name,
Image: service.Spec.TaskTemplate.ContainerSpec.Image,
InvocationCount: invocations,
InvocationCount: 0,
Replicas: *service.Spec.Mode.Replicated.Replicas,
EnvProcess: envProcess,
}
@ -71,18 +71,18 @@ func MakeFunctionReader(metricsOptions metrics.MetricOptions, c *client.Client)
}
}
func getCounterValue(service string, code string, metricsOptions *metrics.MetricOptions) float64 {
// func getCounterValue(service string, code string, metricsOptions *metrics.MetricOptions) float64 {
metric, err := metricsOptions.GatewayFunctionInvocation.
GetMetricWith(prometheus.Labels{"function_name": service, "code": code})
// metric, err := metricsOptions.GatewayFunctionInvocation.
// GetMetricWith(prometheus.Labels{"function_name": service, "code": code})
if err != nil {
return 0
}
// if err != nil {
// return 0
// }
// Get the metric's value from ProtoBuf interface (idea via Julius Volz)
var protoMetric io_prometheus_client.Metric
metric.Write(&protoMetric)
invocations := protoMetric.GetCounter().GetValue()
return invocations
}
// // Get the metric's value from ProtoBuf interface (idea via Julius Volz)
// var protoMetric io_prometheus_client.Metric
// metric.Write(&protoMetric)
// invocations := protoMetric.GetCounter().GetValue()
// return invocations
// }