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main.go
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main.go
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package main
import (
"context"
"github.com/fnproject/fn/api/agent"
"github.com/fnproject/fn/api/agent/drivers/docker"
"github.com/fnproject/fn/api/server"
// The trace package is imported in several places by different dependencies and if we don't import explicity here it is
// initialized every time it is imported and that creates a panic at run time as we register multiple time the handler for
// /debug/requests. For example see: https://github.com/GoogleCloudPlatform/google-cloud-go/issues/663 and https://github.com/bradleyfalzon/gopherci/issues/101
_ "golang.org/x/net/trace"
// EXTENSIONS: Add extension imports here or use `fn build-server`. Learn more: https://github.com/fnproject/fn/blob/master/docs/operating/extending.md
_ "github.com/fnproject/fn/api/server/defaultexts"
)
func main() {
ctx := context.Background()
registerViews()
funcServer := server.NewFromEnv(ctx)
funcServer.Start(ctx)
}
func registerViews() {
keys := []string{}
latencyDist := []float64{1, 10, 50, 100, 250, 500, 1000, 10000, 60000, 120000}
// IO buckets in Mbits (Using same buckets for network + disk)
mb := float64(131072)
ioDist := []float64{0, mb, 4 * mb, 8 * mb, 16 * mb, 32 * mb, 64 * mb, 128 * mb, 256 * mb, 512 * mb, 1024 * mb}
// Memory buckets in MB
mB := float64(1048576)
memoryDist := []float64{0, 128 * mB, 256 * mB, 512 * mB, 1024 * mB, 2 * 1024 * mB, 4 * 1024 * mB, 8 * 1024 * mB}
// 10% granularity buckets
cpuDist := []float64{0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100}
agent.RegisterRunnerViews(keys, latencyDist)
agent.RegisterAgentViews(keys, latencyDist)
agent.RegisterDockerViews(keys, latencyDist, ioDist, ioDist, memoryDist, cpuDist)
// container views have additional metrics, optional to turn on
// TODO more cohesive plan for wiring these in
cKeys := append(keys, agent.AppIDMetricKey.Name(), agent.FnIDMetricKey.Name(), agent.ImageNameMetricKey.Name())
agent.RegisterContainerViews(cKeys, latencyDist)
// Register docker client views
docker.RegisterViews(keys, latencyDist)
server.RegisterAPIViews(keys, latencyDist)
}