go: use dep in builds, remove relative imports

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

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

src/checkoutservice/.dockerignore

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

src/checkoutservice/Dockerfile

@@ -1,19 +1,16 @@
 FROM golang:1.10-alpine as builder
-RUN apk add --no-cache ca-certificates git
-WORKDIR /go/src/checkoutservice
+RUN apk add --no-cache ca-certificates git && \
+      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/checkoutservice
+WORKDIR /go/src/$PROJECT
+
+# restore dependencies
+COPY Gopkg.* ./
+RUN dep ensure --vendor-only -v
 
-# get known dependencies
-RUN go get -d github.com/google/uuid \
-    google.golang.org/grpc \
-    google.golang.org/grpc/codes \
-    google.golang.org/grpc/status \
-    go.opencensus.io/plugin/ocgrpc \
-    go.opencensus.io/exporter/stackdriver \
-	go.opencensus.io/trace \
-    cloud.google.com/go/profiler
 COPY . .
-# get remaining dependencies
-RUN go get -d ./...
 RUN go build -gcflags='-N -l' -o /checkoutservice .
 
 FROM alpine as release

src/checkoutservice/Gopkg.lock

@@ -13,6 +13,15 @@
   revision = "aad3f485ee528456e0768f20397b4d9dd941e755"
   version = "v0.25.0"
 
+[[projects]]
+  name = "contrib.go.opencensus.io/exporter/stackdriver"
+  packages = [
+    ".",
+    "propagation"
+  ]
+  revision = "37aa2801fbf0205003e15636096ebf0373510288"
+  version = "v0.5.0"
+
 [[projects]]
   name = "github.com/golang/protobuf"
   packages = [
@@ -51,8 +60,6 @@
   name = "go.opencensus.io"
   packages = [
     ".",
-    "exporter/stackdriver",
-    "exporter/stackdriver/propagation",
     "internal",
     "internal/tagencoding",
     "plugin/ocgrpc",
@@ -82,7 +89,7 @@
     "internal/timeseries",
     "trace"
   ]
-  revision = "a0f8a16cb08c06df97cbdf9c47f4731ba548c33c"
+  revision = "f4c29de78a2a91c00474a2e689954305c350adf9"
 
 [[projects]]
   branch = "master"
@@ -102,6 +109,12 @@
   packages = ["semaphore"]
   revision = "1d60e4601c6fd243af51cc01ddf169918a5407ca"
 
+[[projects]]
+  branch = "master"
+  name = "golang.org/x/sys"
+  packages = ["unix"]
+  revision = "0ffbfd41fbef8ffcf9b62b0b0aa3a5873ed7a4fe"
+
 [[projects]]
   name = "golang.org/x/text"
   packages = [
@@ -136,7 +149,7 @@
     "transport/grpc",
     "transport/http"
   ]
-  revision = "31ca0e01cd791f07750cb23fc99327721f753290"
+  revision = "f6d94689cbd71030af1108ddac733886fcae1d75"
 
 [[projects]]
   name = "google.golang.org/appengine"
@@ -173,7 +186,7 @@
     "googleapis/rpc/status",
     "protobuf/field_mask"
   ]
-  revision = "2a72893556e4d1f6c795a4c039314c9fa751eedb"
+  revision = "daca94659cb50e9f37c1b834680f2e46358f10b0"
 
 [[projects]]
   name = "google.golang.org/grpc"
@@ -192,7 +205,9 @@
     "internal",
     "internal/backoff",
     "internal/channelz",
+    "internal/envconfig",
     "internal/grpcrand",
+    "internal/transport",
     "keepalive",
     "metadata",
     "naming",
@@ -202,15 +217,14 @@
     "resolver/passthrough",
     "stats",
     "status",
-    "tap",
-    "transport"
+    "tap"
   ]
-  revision = "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
-  version = "v1.13.0"
+  revision = "32fb0ac620c32ba40a4626ddf94d90d12cce3455"
+  version = "v1.14.0"
 
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "73bafb0f18bd463b549babecf99cc93904602a143a87e666f7f8f1a3790c5a3b"
+  inputs-digest = "54254ec0ccf29fb2b490b54b12e5f3eb752ab9b8f9d4f5ab097d60f96eeed9d9"
   solver-name = "gps-cdcl"
   solver-version = 1

src/checkoutservice/Gopkg.toml

@@ -29,6 +29,10 @@
   name = "cloud.google.com/go"
   version = "0.25.0"
 
+[[constraint]]
+  name = "contrib.go.opencensus.io/exporter/stackdriver"
+  version = "0.5.0"
+
 [[constraint]]
   name = "github.com/golang/protobuf"
   version = "1.1.0"
@@ -47,7 +51,7 @@
 
 [[constraint]]
   name = "google.golang.org/grpc"
-  version = "1.13.0"
+  version = "1.14.0"
 
 [prune]
   go-tests = true

src/checkoutservice/README.md

@@ -0,0 +1,5 @@
+# checkoutservice
+
+Run the following command to restore dependencies to `vendor/` directory:
+
+    dep ensure --vendor-only

src/checkoutservice/main.go

@@ -23,16 +23,16 @@ import (
 	"time"
 
 	"cloud.google.com/go/profiler"
+	"contrib.go.opencensus.io/exporter/stackdriver"
 	"github.com/google/uuid"
-	"go.opencensus.io/exporter/stackdriver"
 	"go.opencensus.io/plugin/ocgrpc"
 	"go.opencensus.io/trace"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
 
-	pb "checkoutservice/genproto"
-	money "checkoutservice/money"
+	pb "github.com/GoogleCloudPlatform/microservices-demo/src/checkoutservice/genproto"
+	money "github.com/GoogleCloudPlatform/microservices-demo/src/checkoutservice/money"
 )
 
 const (

src/checkoutservice/money/money.go

@@ -17,7 +17,7 @@ package money
 import (
 	"errors"
 
-	pb "checkoutservice/genproto"
+	pb "github.com/GoogleCloudPlatform/microservices-demo/src/checkoutservice/genproto"
 )
 
 const (

src/checkoutservice/money/money_test.go

@@ -19,7 +19,7 @@ import (
 	"reflect"
 	"testing"
 
-	pb "checkoutservice/genproto"
+	pb "github.com/GoogleCloudPlatform/microservices-demo/src/checkoutservice/genproto"
 )
 
 func mmc(u int64, n int32, c string) pb.Money { return pb.Money{Units: u, Nanos: n, CurrencyCode: c} }