pkg/cloud/services/s3: initial commit

This commit adds initial implementation of S3 service, which will be
used to store bootstrap data for nodes, which do not support pulling
them from Secret Manager, like ones using Ignition as bootstrap system.

This commit also adds a function for creating a real S3 client similar
to other functions in this package.

Co-authored-by: Dongsu Park <[email protected]>
Signed-off-by: Mateusz Gozdek <[email protected]>

Author: invidian

pkg/cloud/scope/clients.go

@@ -34,6 +34,8 @@ import (
 	"github.com/aws/aws-sdk-go/service/iam/iamiface"
 	"github.com/aws/aws-sdk-go/service/resourcegroupstaggingapi"
 	"github.com/aws/aws-sdk-go/service/resourcegroupstaggingapi/resourcegroupstaggingapiiface"
+	"github.com/aws/aws-sdk-go/service/s3"
+	"github.com/aws/aws-sdk-go/service/s3/s3iface"
 	"github.com/aws/aws-sdk-go/service/secretsmanager"
 	"github.com/aws/aws-sdk-go/service/secretsmanager/secretsmanageriface"
 	"github.com/aws/aws-sdk-go/service/sqs"
@@ -182,6 +184,16 @@ func NewSSMClient(scopeUser cloud.ScopeUsage, session cloud.Session, logger clou
 	return ssmClient
 }
 
+// NewS3Client creates a new S3 API client for a given session.
+func NewS3Client(scopeUser cloud.ScopeUsage, session cloud.Session, logger cloud.Logger, target runtime.Object) s3iface.S3API {
+	s3Client := s3.New(session.Session(), aws.NewConfig().WithLogLevel(awslogs.GetAWSLogLevel(logger)).WithLogger(awslogs.NewWrapLogr(logger)))
+	s3Client.Handlers.Build.PushFrontNamed(getUserAgentHandler())
+	s3Client.Handlers.CompleteAttempt.PushFront(awsmetrics.CaptureRequestMetrics(scopeUser.ControllerName()))
+	s3Client.Handlers.Complete.PushBack(recordAWSPermissionsIssue(target))
+
+	return s3Client
+}
+
 func recordAWSPermissionsIssue(target runtime.Object) func(r *request.Request) {
 	return func(r *request.Request) {
 		if awsErr, ok := r.Error.(awserr.Error); ok {

pkg/cloud/services/interfaces.go

@@ -102,3 +102,11 @@ type SecurityGroupInterface interface {
 	DeleteSecurityGroups() error
 	ReconcileSecurityGroups() error
 }
+
+// ObjectStoreInterface encapsulates the methods exposed to the machine actuator.
+type ObjectStoreInterface interface {
+	DeleteBucket() error
+	ReconcileBucket() error
+	Delete(m *scope.MachineScope) error
+	Create(m *scope.MachineScope, data []byte) (objectURL string, err error)
+}

pkg/cloud/services/mock_services/doc.go

@@ -19,6 +19,8 @@ limitations under the License.
 //go:generate /usr/bin/env bash -c "cat ../../../../hack/boilerplate/boilerplate.generatego.txt ec2_interface_mock.go > _ec2_interface_mock.go && mv _ec2_interface_mock.go ec2_interface_mock.go"
 //go:generate ../../../../hack/tools/bin/mockgen -destination secretsmanager_machine_interface_mock.go -package mock_services sigs.k8s.io/cluster-api-provider-aws/pkg/cloud/services SecretInterface
 //go:generate /usr/bin/env bash -c "cat ../../../../hack/boilerplate/boilerplate.generatego.txt secretsmanager_machine_interface_mock.go > _secretsmanager_machine_interface_mock.go && mv _secretsmanager_machine_interface_mock.go secretsmanager_machine_interface_mock.go"
+//go:generate ../../../../hack/tools/bin/mockgen -destination objectstore_machine_interface_mock.go -package mock_services sigs.k8s.io/cluster-api-provider-aws/pkg/cloud/services ObjectStoreInterface
+//go:generate /usr/bin/env bash -c "cat ../../../../hack/boilerplate/boilerplate.generatego.txt objectstore_machine_interface_mock.go > _objectstore_machine_interface_mock.go && mv _objectstore_machine_interface_mock.go objectstore_machine_interface_mock.go"
 //go:generate ../../../../hack/tools/bin/mockgen -destination autoscaling_interface_mock.go -package mock_services sigs.k8s.io/cluster-api-provider-aws/pkg/cloud/services ASGInterface
 //go:generate /usr/bin/env bash -c "cat ../../../../hack/boilerplate/boilerplate.generatego.txt autoscaling_interface_mock.go > _autoscaling_interface_mock.go && mv _autoscaling_interface_mock.go autoscaling_interface_mock.go"
 //go:generate ../../../../hack/tools/bin/mockgen -destination elb_interface_mock.go -package mock_services sigs.k8s.io/cluster-api-provider-aws/pkg/cloud/services ELBInterface

pkg/cloud/services/mock_services/objectstore_machine_interface_mock.go

@@ -0,0 +1,20 @@
+/*
+Copyright 2019 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Run go generate to regenerate this mock.
+//go:generate ../../../../../hack/tools/bin/mockgen -destination s3api_mock.go -package mock_s3iface github.com/aws/aws-sdk-go/service/s3/s3iface S3API
+//go:generate /usr/bin/env bash -c "cat ../../../../../hack/boilerplate/boilerplate.generatego.txt s3api_mock.go > _s3api_mock.go && mv _s3api_mock.go s3api_mock.go"
+package mock_s3iface //nolint