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Merged
merged 2 commits into from
Nov 9, 2021
Merged

Gatewayclass controller #3

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a9378a8
Add GatewayClass Controller
pleshakov Nov 8, 2021
d5d4d7c
Address PR feedback
pleshakov Nov 9, 2021
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2 changes: 2 additions & 0 deletions build/Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,8 @@ COPY go.mod go.sum /go/src/github.com/nginxinc/nginx-gateway-kubernetes
RUN go mod download

COPY cmd /go/src/github.com/nginxinc/nginx-gateway-kubernetes/cmd
COPY internal /go/src/github.com/nginxinc/nginx-gateway-kubernetes/internal
COPY pkg /go/src/github.com/nginxinc/nginx-gateway-kubernetes/pkg
RUN CGO_ENABLED=0 GOOS=linux go build -trimpath -a -ldflags "-s -w -X main.version=${VERSION} -X main.commit=${GIT_COMMIT} -X main.date=${DATE}" -o gateway .

FROM scratch as common
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69 changes: 27 additions & 42 deletions cmd/gateway/main.go
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Original file line number Diff line number Diff line change
@@ -1,18 +1,17 @@
package main

import (
"context"
"flag"
"fmt"
"os"
"os/signal"
"syscall"
"time"

"go.uber.org/zap"
meta_v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"github.com/nginxinc/nginx-gateway-kubernetes/internal/implementation"
"github.com/nginxinc/nginx-gateway-kubernetes/pkg/sdk"
"k8s.io/client-go/rest"
"sigs.k8s.io/gateway-api/pkg/client/clientset/gateway/versioned"
"sigs.k8s.io/controller-runtime/pkg/log/zap"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/manager/signals"
"sigs.k8s.io/gateway-api/apis/v1alpha2"
)

var (
Expand All @@ -33,58 +32,44 @@ func main() {
os.Exit(1)
}

logger, err := zap.NewProduction()
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to initialize logging: %v\n", err)
os.Exit(1)
}
sugar := logger.Sugar()
logger := zap.New()

sugar.Infow("Starting NGINX Gateway",
logger.Info("Starting NGINX Gateway",
"version", version,
"commit", commit,
"date", date)

config, err := rest.InClusterConfig()
if err != nil {
sugar.Fatalw("Failed to create InClusterConfig",
"error", err)
logger.Error(err, "Failed to create InClusterConfig")
os.Exit(1)
}

gatewayClient, err := versioned.NewForConfig(config)
mgr, err := manager.New(config, manager.Options{
Logger: logger,
})
if err != nil {
sugar.Fatalw("Failed to create a client for Gateway APIs",
"error", err)
logger.Error(err, "Failed to create Manager")
os.Exit(1)
}

gc, err := gatewayClient.GatewayV1alpha2().GatewayClasses().Get(context.TODO(), *gatewayClass, meta_v1.GetOptions{})
err = v1alpha2.AddToScheme(mgr.GetScheme())
if err != nil {
sugar.Fatalw("Failed to get the GatewayClass",
"name", *gatewayClass,
"error", err)
logger.Error(err, "Failed to add Gateway API scheme")
os.Exit(1)
}

if gc.Spec.ControllerName != "k8s-gateway.nginx.org/gateway" {
sugar.Fatalw("Wrong ControllerName in the GatewayClass resource",
"expected", "k8s-gateway.nginx.org/gateway",
"got", "gc.Spec.ControllerName")
err = sdk.RegisterGatewayClassController(mgr, implementation.NewGatewayClassImplementation(logger))
if err != nil {
logger.Error(err, "Failed to register GatewayClassController")
os.Exit(1)
}

sugar.Infow("Gateway class info",
"name", gc.Name,
"creation timestamp", gc.CreationTimestamp)

signalChan := make(chan os.Signal, 1)
signal.Notify(signalChan, os.Interrupt, syscall.SIGTERM)
go func() {
sugar.Infow("Terminating because of the signal",
"signal", <-signalChan)
logger.Info("Starting manager")

os.Exit(0)
}()

for {
sugar.Infow("Gateway is running")
time.Sleep(30 * time.Second)
err = mgr.Start(signals.SetupSignalHandler())
if err != nil {
logger.Error(err, "Failed to start Manager")
os.Exit(1)
}
}
3 changes: 2 additions & 1 deletion deploy/manifests/nginx-gateway.yaml
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Expand Up @@ -19,7 +19,8 @@ rules:
resources:
- gatewayclasses
verbs:
- get
- list
- watch
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
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32 changes: 26 additions & 6 deletions go.mod
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Expand Up @@ -3,38 +3,58 @@ module github.com/nginxinc/nginx-gateway-kubernetes
go 1.17

require (
github.com/go-logr/logr v0.4.0
go.uber.org/zap v1.19.1
k8s.io/apimachinery v0.22.1
k8s.io/client-go v0.22.1
golang.org/x/net v0.0.0-20210520170846-37e1c6afe023
k8s.io/apimachinery v0.22.2
k8s.io/client-go v0.22.2
sigs.k8s.io/controller-runtime v0.10.2
sigs.k8s.io/gateway-api v0.4.0
)

require (
github.com/beorn7/perks v1.0.1 // indirect
github.com/cespare/xxhash/v2 v2.1.1 // indirect
github.com/davecgh/go-spew v1.1.1 // indirect
github.com/go-logr/logr v0.4.0 // indirect
github.com/evanphx/json-patch v4.11.0+incompatible // indirect
github.com/fsnotify/fsnotify v1.4.9 // indirect
github.com/go-logr/zapr v0.4.0 // indirect
github.com/gogo/protobuf v1.3.2 // indirect
github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
github.com/golang/protobuf v1.5.2 // indirect
github.com/google/go-cmp v0.5.6 // indirect
github.com/google/gofuzz v1.1.0 // indirect
github.com/google/uuid v1.1.2 // indirect
github.com/googleapis/gnostic v0.5.5 // indirect
github.com/imdario/mergo v0.3.12 // indirect
github.com/json-iterator/go v1.1.11 // indirect
github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369 // indirect
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
github.com/modern-go/reflect2 v1.0.1 // indirect
github.com/pkg/errors v0.9.1 // indirect
github.com/prometheus/client_golang v1.11.0 // indirect
github.com/prometheus/client_model v0.2.0 // indirect
github.com/prometheus/common v0.26.0 // indirect
github.com/prometheus/procfs v0.6.0 // indirect
github.com/spf13/pflag v1.0.5 // indirect
go.uber.org/atomic v1.9.0 // indirect
go.uber.org/multierr v1.7.0 // indirect
golang.org/x/net v0.0.0-20210520170846-37e1c6afe023 // indirect
golang.org/x/oauth2 v0.0.0-20210402161424-2e8d93401602 // indirect
golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c // indirect
golang.org/x/sys v0.0.0-20210817190340-bfb29a6856f2 // indirect
golang.org/x/term v0.0.0-20210220032956-6a3ed077a48d // indirect
golang.org/x/text v0.3.6 // indirect
golang.org/x/time v0.0.0-20210723032227-1f47c861a9ac // indirect
gomodules.xyz/jsonpatch/v2 v2.2.0 // indirect
google.golang.org/appengine v1.6.7 // indirect
google.golang.org/protobuf v1.26.0 // indirect
gopkg.in/inf.v0 v0.9.1 // indirect
gopkg.in/yaml.v2 v2.4.0 // indirect
gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
k8s.io/api v0.22.1 // indirect
k8s.io/api v0.22.2 // indirect
k8s.io/apiextensions-apiserver v0.22.2 // indirect
k8s.io/component-base v0.22.2 // indirect
k8s.io/klog/v2 v2.10.0 // indirect
k8s.io/kube-openapi v0.0.0-20210421082810-95288971da7e // indirect
k8s.io/utils v0.0.0-20210820185131-d34e5cb4466e // indirect
sigs.k8s.io/structured-merge-diff/v4 v4.1.2 // indirect
sigs.k8s.io/yaml v1.2.0 // indirect
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