[gold] Getting traceserver ready for K8s

The first instance will the be the Lottie server.
This is still WIP.

Bug: skia:
Change-Id: Iaa634c42fecb195642a072d97848be68e1276bc8
Reviewed-on: https://skia-review.googlesource.com/143062
Commit-Queue: Stephan Altmueller <stephana@google.com>
Reviewed-by: Ben Wagner <benjaminwagner@google.com>

.gitignore

@@ -104,3 +104,4 @@ promk/tmp
 # kube
 **/chat_config.txt
 .vscode
+tracedb/build

tracedb/Makefile

@@ -1,3 +1,5 @@
+KGO := CGO_ENABLED=0 GOOS=linux go build
+
 default:
 	go install -v ./go/traceserver
 	go install -v ./go/tracetool
@@ -17,3 +19,10 @@ default:
 	mv $(GOPATH)/bin/chromevr_gold_ingestion $(GOPATH)/bin/chromevr_gold_ingestion_old
 	cp $(GOPATH)/bin/skia_ingestion $(GOPATH)/bin/chromevr_gold_ingestion
 	rm $(GOPATH)/bin/chromevr_gold_ingestion_old
+
+.PHONY: k8s-binaries
+k8s-binaries:
+	mkdir -p ./build
+	rm -f ./build/*
+	$(KGO) -o build/traceserver_k8s  -a ./go/traceserver/main.go
+	$(KGO) -o build/skia_ingestion_k8s  -a ./go/skia_ingestion/main.go

tracedb/dockerfiles/Dockerfile_traceserver

@@ -0,0 +1,9 @@
+FROM gcr.io/skia-public/basealpine:3.7
+
+USER root
+
+COPY . /
+
+USER skia
+
+ENTRYPOINT ["/usr/local/bin/gold-traceserver"]

tracedb/go/traceserver/main.go

@@ -3,7 +3,9 @@ package main
 
 import (
 	"flag"
+	"log"
 	"net"
+	"net/http"
 	"os"
 	"path/filepath"
 	"runtime/pprof"
@@ -13,13 +15,15 @@ import (
 	"go.skia.org/infra/go/sklog"
 	tracedb "go.skia.org/infra/go/trace/db"
 	"go.skia.org/infra/go/trace/service"
+	"go.skia.org/infra/go/util"
 	"google.golang.org/grpc"
 )
 
 // flags
 var (
 	cpuprofile = flag.String("cpuprofile", "", "Write cpu profile to file.")
 	db_file    = flag.String("db_file", "", "The name of the BoltDB file that will store the traces.")
+	httpPort   = flag.String("http_port", ":9091", "The http port where ready-ness endpoints are served.")
 	local      = flag.Bool("local", false, "Running locally if true. As opposed to in production.")
 	port       = flag.String("port", ":9090", "The port to serve the gRPC endpoint on.")
 	promPort   = flag.String("prom_port", ":20000", "Metrics service address (e.g., ':10110')")
@@ -73,5 +77,10 @@ func main() {
 		})
 	}
 
-	select {}
+	// Set up the http handler to indicate ready-ness and start serving.
+	http.HandleFunc("/ready", func(w http.ResponseWriter, r *http.Request) {
+		_, err := w.Write([]byte("ready"))
+		util.LogErr(err)
+	})
+	log.Fatal(http.ListenAndServe(*httpPort, nil))
 }

tracedb/k8s_build_traceserver

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+set -x -e
+
+# Builds and uploads a container image for traceserver.
+
+APPNAME="gold-traceserver"
+
+# Copy files into the right locations in ${ROOT}.
+copy_release_files()
+{
+INSTALL="install -D --verbose --backup=none"
+INSTALL_DIR="install -d --verbose --backup=none"
+
+${INSTALL} --mode=644 -T ./dockerfiles/Dockerfile_traceserver   ${ROOT}/Dockerfile
+${INSTALL}  --mode=755 -T ./build/traceserver_k8s               ${ROOT}/usr/local/bin/gold-traceserver
+}
+
+source ../bash/docker_build.sh