go: use dep in builds, remove relative imports

Fixes #11.
Fixes #12.
Fixes #13.

Signed-off-by: Ahmet Alp Balkan <ahmetb@google.com>

src/cartservice/Dockerfile

@@ -1,8 +1,12 @@
 # cartservice_probe
 FROM golang:1.10 as builder
-WORKDIR /src/microservices-demo/cartservice/probe
-COPY probe/ .
-RUN go get -d ./...
+RUN wget -qO/go/bin/dep https://github.com/golang/dep/releases/download/v0.5.0/dep-linux-amd64 && \
+      chmod +x /go/bin/dep
+ENV PROJECT github.com/GoogleCloudPlatform/microservices-demo/src/cartservice/probe
+WORKDIR /go/src/$PROJECT
+COPY probe/Gopkg.* ./
+RUN dep ensure --vendor-only -v
+COPY ./probe ./
 RUN go build -o /cartservice_probe .
 
 # cartservice

src/cartservice/probe/.dockerignore

@@ -0,0 +1 @@
+vendor/

src/cartservice/probe/Gopkg.lock

@@ -0,0 +1,101 @@
+# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
+
+
+[[projects]]
+  name = "github.com/golang/protobuf"
+  packages = [
+    "proto",
+    "ptypes",
+    "ptypes/any",
+    "ptypes/duration",
+    "ptypes/timestamp"
+  ]
+  revision = "b4deda0973fb4c70b50d226b1af49f3da59f5265"
+  version = "v1.1.0"
+
+[[projects]]
+  branch = "master"
+  name = "golang.org/x/net"
+  packages = [
+    "context",
+    "http/httpguts",
+    "http2",
+    "http2/hpack",
+    "idna",
+    "internal/timeseries",
+    "trace"
+  ]
+  revision = "f4c29de78a2a91c00474a2e689954305c350adf9"
+
+[[projects]]
+  branch = "master"
+  name = "golang.org/x/sys"
+  packages = ["unix"]
+  revision = "0ffbfd41fbef8ffcf9b62b0b0aa3a5873ed7a4fe"
+
+[[projects]]
+  name = "golang.org/x/text"
+  packages = [
+    "collate",
+    "collate/build",
+    "internal/colltab",
+    "internal/gen",
+    "internal/tag",
+    "internal/triegen",
+    "internal/ucd",
+    "language",
+    "secure/bidirule",
+    "transform",
+    "unicode/bidi",
+    "unicode/cldr",
+    "unicode/norm",
+    "unicode/rangetable"
+  ]
+  revision = "f21a4dfb5e38f5895301dc265a8def02365cc3d0"
+  version = "v0.3.0"
+
+[[projects]]
+  branch = "master"
+  name = "google.golang.org/genproto"
+  packages = ["googleapis/rpc/status"]
+  revision = "daca94659cb50e9f37c1b834680f2e46358f10b0"
+
+[[projects]]
+  name = "google.golang.org/grpc"
+  packages = [
+    ".",
+    "balancer",
+    "balancer/base",
+    "balancer/roundrobin",
+    "codes",
+    "connectivity",
+    "credentials",
+    "encoding",
+    "encoding/proto",
+    "grpclog",
+    "internal",
+    "internal/backoff",
+    "internal/channelz",
+    "internal/envconfig",
+    "internal/grpcrand",
+    "internal/transport",
+    "keepalive",
+    "metadata",
+    "naming",
+    "peer",
+    "resolver",
+    "resolver/dns",
+    "resolver/passthrough",
+    "stats",
+    "status",
+    "tap"
+  ]
+  revision = "32fb0ac620c32ba40a4626ddf94d90d12cce3455"
+  version = "v1.14.0"
+
+[solve-meta]
+  analyzer-name = "dep"
+  analyzer-version = 1
+  inputs-digest = "8f3c07df5ebc7dc4d50ca8a6c274eef95f3045d33bbe5f384271fa87166a457e"
+  solver-name = "gps-cdcl"
+  solver-version = 1

src/cartservice/probe/Gopkg.toml

@@ -0,0 +1,42 @@
+# Gopkg.toml example
+#
+# Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+#   name = "github.com/user/project"
+#   version = "1.0.0"
+#
+# [[constraint]]
+#   name = "github.com/user/project2"
+#   branch = "dev"
+#   source = "github.com/myfork/project2"
+#
+# [[override]]
+#   name = "github.com/x/y"
+#   version = "2.4.0"
+#
+# [prune]
+#   non-go = false
+#   go-tests = true
+#   unused-packages = true
+
+
+[[constraint]]
+  name = "github.com/golang/protobuf"
+  version = "1.1.0"
+
+[[constraint]]
+  branch = "master"
+  name = "golang.org/x/net"
+
+[[constraint]]
+  name = "google.golang.org/grpc"
+  version = "1.14.0"
+
+[prune]
+  go-tests = true
+  unused-packages = true

src/cartservice/probe/main.go

@@ -20,9 +20,8 @@ import (
 	"os"
 	"time"
 
-	pb "./genproto"
+	pb "github.com/GoogleCloudPlatform/microservices-demo/src/cartservice/probe/genproto"
 
-	"go.opencensus.io/plugin/ocgrpc"
 	"google.golang.org/grpc"
 )
 
@@ -38,7 +37,6 @@ func main() {
 		grpc.WithBlock(),
 		grpc.WithTimeout(time.Second*3),
 		grpc.WithInsecure(),
-		grpc.WithStatsHandler(&ocgrpc.ClientHandler{}),
 	)
 	if err != nil {
 		log.Fatalf("probe failed: failed to connect: %+v", err)