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Simplify instrumentation metrics.

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- fix javascript deserialization in UI with json response
-  create swarm watcher to monitor replicas
This commit is contained in:
Alex Ellis
2017-03-14 22:04:17 +00:00
committed by Alex Ellis
parent 38713184e5
commit a63dd8ee4c
8 changed files with 115 additions and 44 deletions
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48
gateway/metrics/metrics.go
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@ -8,10 +8,9 @@ import (
// MetricOptions to be used by web handlers
type MetricOptions struct {
GatewayRequestsTotal prometheus.Counter
GatewayServerlessServedTotal prometheus.Counter
GatewayFunctions prometheus.Histogram
GatewayFunctionInvocation *prometheus.CounterVec
GatewayFunctionInvocation *prometheus.CounterVec
GatewayFunctionsHistogram *prometheus.HistogramVec
ServiceReplicasCounter *prometheus.GaugeVec
}
// PrometheusHandler Bootstraps prometheus for metrics collection
@ -19,20 +18,14 @@ func PrometheusHandler() http.Handler {
return prometheus.Handler()
}
// BuildMetricsOptions builds metrics for tracking functions in the API gateway
func BuildMetricsOptions() MetricOptions {
GatewayRequestsTotal := prometheus.NewCounter(prometheus.CounterOpts{
Name: "gateway_requests_total",
Help: "Total amount of HTTP requests to the gateway",
})
GatewayServerlessServedTotal := prometheus.NewCounter(prometheus.CounterOpts{
Name: "gateway_serverless_invocation_total",
Help: "Total amount of serverless function invocations",
})
GatewayFunctions := prometheus.NewHistogram(prometheus.HistogramOpts{
Name: "gateway_functions",
Help: "Gateway functions",
})
GatewayFunctionInvocation := prometheus.NewCounterVec(
gatewayFunctionsHistogram := prometheus.NewHistogramVec(prometheus.HistogramOpts{
Name: "gateway_functions_seconds",
Help: "Function time taken",
}, []string{"function_name"})
gatewayFunctionInvocation := prometheus.NewCounterVec(
prometheus.CounterOpts{
Name: "gateway_function_invocation_total",
Help: "Individual function metrics",
@ -40,19 +33,26 @@ func BuildMetricsOptions() MetricOptions {
[]string{"function_name", "code"},
)
serviceReplicas := prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Name: "gateway_service_count",
Help: "Docker service replicas",
},
[]string{"function_name"},
)
metricsOptions := MetricOptions{
GatewayRequestsTotal: GatewayRequestsTotal,
GatewayServerlessServedTotal: GatewayServerlessServedTotal,
GatewayFunctions: GatewayFunctions,
GatewayFunctionInvocation: GatewayFunctionInvocation,
GatewayFunctionsHistogram: gatewayFunctionsHistogram,
GatewayFunctionInvocation: gatewayFunctionInvocation,
ServiceReplicasCounter: serviceReplicas,
}
return metricsOptions
}
//RegisterMetrics registers with Prometheus for tracking
func RegisterMetrics(metricsOptions MetricOptions) {
prometheus.Register(metricsOptions.GatewayRequestsTotal)
prometheus.Register(metricsOptions.GatewayServerlessServedTotal)
prometheus.Register(metricsOptions.GatewayFunctions)
prometheus.Register(metricsOptions.GatewayFunctionInvocation)
prometheus.Register(metricsOptions.GatewayFunctionsHistogram)
prometheus.Register(metricsOptions.ServiceReplicasCounter)
}