sidecar: add initial sidecar setup with client

Sidecar accepts timeout and csiAddonsAddress,
tries to connect, probe and gets driverName
from the CSI Driver.

Signed-off-by: Rakshith R <rar@redhat.com>

Author: Rakshith-R

go.mod

@@ -3,10 +3,15 @@ module github.com/csi-addons/kubernetes-csi-addons
 go 1.17
 
 require (
+	github.com/csi-addons/spec v0.1.2-0.20211208151110-e720204c043b
+	github.com/kubernetes-csi/csi-lib-utils v0.10.0
 	github.com/onsi/ginkgo v1.16.4
 	github.com/onsi/gomega v1.15.0
+	google.golang.org/grpc v1.43.0
+	google.golang.org/protobuf v1.27.1
 	k8s.io/apimachinery v0.22.1
 	k8s.io/client-go v0.22.1
+	k8s.io/klog/v2 v2.9.0
 	sigs.k8s.io/controller-runtime v0.10.0
 )
 
@@ -19,6 +24,7 @@ require (
 	github.com/Azure/go-autorest/logger v0.2.1 // indirect
 	github.com/Azure/go-autorest/tracing v0.6.0 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/blang/semver v3.5.1+incompatible // indirect
 	github.com/cespare/xxhash/v2 v2.1.1 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/evanphx/json-patch v4.11.0+incompatible // indirect
@@ -57,15 +63,14 @@ require (
 	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 v1.27.1 // indirect
+	google.golang.org/genproto v0.0.0-20210602131652-f16073e35f0c // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // 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/apiextensions-apiserver v0.22.1 // indirect
 	k8s.io/component-base v0.22.1 // indirect
-	k8s.io/klog/v2 v2.9.0 // indirect
 	k8s.io/kube-openapi v0.0.0-20210421082810-95288971da7e // indirect
 	k8s.io/utils v0.0.0-20210802155522-efc7438f0176 // indirect
 	sigs.k8s.io/structured-merge-diff/v4 v4.1.2 // indirect

go.sum

@@ -65,6 +65,7 @@ github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
 github.com/bketelsen/crypt v0.0.3-0.20200106085610-5cbc8cc4026c/go.mod h1:MKsuJmJgSg28kpZDP6UIiPt0e0Oz0kqKNGyRaWEPv84=
+github.com/blang/semver v3.5.1+incompatible h1:cQNTCjp13qL8KC3Nbxr/y2Bqb63oX6wdnnjpJbkM4JQ=
 github.com/blang/semver v3.5.1+incompatible/go.mod h1:kRBLl5iJ+tD4TcOOxsy/0fnwebNt5EWlYSAyrTnjyyk=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/certifi/gocertifi v0.0.0-20191021191039-0944d244cd40/go.mod h1:sGbDF6GwGcLpkNXPUTkMRoywsNa/ol15pxFe6ERfguA=
@@ -79,9 +80,15 @@ github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMn
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
+github.com/cncf/udpa/go v0.0.0-20210930031921-04548b0d99d4/go.mod h1:6pvJx4me5XPnfI9Z40ddWsdw2W/uZgQLFXToKeRcDiI=
+github.com/cncf/xds/go v0.0.0-20210805033703-aa0b78936158/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
+github.com/cncf/xds/go v0.0.0-20210922020428-25de7278fc84/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
+github.com/cncf/xds/go v0.0.0-20211011173535-cb28da3451f1/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
 github.com/cockroachdb/datadriven v0.0.0-20200714090401-bf6692d28da5/go.mod h1:h6jFvWxBdQXxjopDMZyH2UVceIRfR84bdzbkoKrsWNo=
 github.com/cockroachdb/errors v1.2.4/go.mod h1:rQD95gz6FARkaKkQXUksEje/d9a6wBJoCr5oaCLELYA=
 github.com/cockroachdb/logtags v0.0.0-20190617123548-eb05cc24525f/go.mod h1:i/u985jwjWRlyHXQbwatDASoW0RMlZ/3i9yJHE2xLkI=
+github.com/container-storage-interface/spec v1.5.0 h1:lvKxe3uLgqQeVQcrnL2CPQKISoKjTJxojEs9cBk+HXo=
+github.com/container-storage-interface/spec v1.5.0/go.mod h1:8K96oQNkJ7pFcC2R9Z1ynGGBB1I93kcS6PGg3SsOk8s=
 github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
 github.com/coreos/etcd v3.3.13+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
 github.com/coreos/go-oidc v2.1.0+incompatible/go.mod h1:CgnwVTmzoESiwO9qyAFEMiHoZ1nMCKZlZ9V6mm3/LKc=
@@ -92,6 +99,8 @@ github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfc
 github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/creack/pty v1.1.11/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
+github.com/csi-addons/spec v0.1.2-0.20211208151110-e720204c043b h1:nBr77+3rcC8DFvhoV1t6rQFwAmvU1TekTJ5FFDK+sKM=
+github.com/csi-addons/spec v0.1.2-0.20211208151110-e720204c043b/go.mod h1:Mwq4iLiUV4s+K1bszcWU6aMsR5KPsbIYzzszJ6+56vI=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -107,6 +116,7 @@ github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.m
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
 github.com/envoyproxy/go-control-plane v0.9.9-0.20201210154907-fd9021fe5dad/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
 github.com/envoyproxy/go-control-plane v0.9.9-0.20210217033140-668b12f5399d/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
+github.com/envoyproxy/go-control-plane v0.9.10-0.20210907150352-cf90f659a021/go.mod h1:AFq3mo9L8Lqqiid3OhADV3RfLJnjiw63cSpi+fDTRC0=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/evanphx/json-patch v0.5.2/go.mod h1:ZWS5hhDbVDyob71nXKNL0+PWn6ToqBHMikGIFbs31qQ=
 github.com/evanphx/json-patch v4.11.0+incompatible h1:glyUF9yIYtMHzn8xaKw5rMhdWcwsYV8dZHIq5567/xs=
@@ -269,6 +279,8 @@ github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
+github.com/kubernetes-csi/csi-lib-utils v0.10.0 h1:Aqm8X81eCzzfH/bvIEqSWtcbK9HF9NbFk4d+le1snVA=
+github.com/kubernetes-csi/csi-lib-utils v0.10.0/go.mod h1:BmGZZB16L18+9+Lgg9YWwBKfNEHIDdgGfAyuW6p2NV0=
 github.com/magiconair/properties v1.8.1/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
 github.com/mailru/easyjson v0.0.0-20190614124828-94de47d64c63/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
 github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
@@ -680,6 +692,7 @@ google.golang.org/genproto v0.0.0-20200423170343-7949de9c1215/go.mod h1:55QSHmfG
 google.golang.org/genproto v0.0.0-20200513103714-09dca8ec2884/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
 google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
 google.golang.org/genproto v0.0.0-20201019141844-1ed22bb0c154/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210602131652-f16073e35f0c h1:wtujag7C+4D6KMoulW9YauvK2lgdvCMS260jsqqBXr0=
 google.golang.org/genproto v0.0.0-20210602131652-f16073e35f0c/go.mod h1:UODoCrxHCcBojKKwX1terBiRUaqAsFqJiF615XL43r0=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
@@ -694,6 +707,8 @@ google.golang.org/grpc v1.33.1/go.mod h1:fr5YgcSWrqhRRxogOsw7RzIpsmvOZ6IcH4kBYTp
 google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
 google.golang.org/grpc v1.37.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
 google.golang.org/grpc v1.38.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
+google.golang.org/grpc v1.43.0 h1:Eeu7bZtDZ2DpRCsLhUlcrLnvYaMK1Gz86a+hMVvELmM=
+google.golang.org/grpc v1.43.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@@ -705,7 +720,6 @@ google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpAD
 google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4=
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
-google.golang.org/protobuf v1.26.0 h1:bxAC2xTBsZGibn2RTntX0oH50xLsqy1OxA9tTL3p/lk=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
 google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
@@ -747,16 +761,20 @@ honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWh
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
+k8s.io/api v0.22.0/go.mod h1:0AoXXqst47OI/L0oGKq9DG61dvGRPXs7X4/B7KyjBCU=
 k8s.io/api v0.22.1 h1:ISu3tD/jRhYfSW8jI/Q1e+lRxkR7w9UwQEZ7FgslrwY=
 k8s.io/api v0.22.1/go.mod h1:bh13rkTp3F1XEaLGykbyRD2QaTTzPm0e/BMd8ptFONY=
 k8s.io/apiextensions-apiserver v0.22.1 h1:YSJYzlFNFSfUle+yeEXX0lSQyLEoxoPJySRupepb0gE=
 k8s.io/apiextensions-apiserver v0.22.1/go.mod h1:HeGmorjtRmRLE+Q8dJu6AYRoZccvCMsghwS8XTUYb2c=
+k8s.io/apimachinery v0.22.0/go.mod h1:O3oNtNadZdeOMxHFVxOreoznohCpy0z6mocxbZr7oJ0=
 k8s.io/apimachinery v0.22.1 h1:DTARnyzmdHMz7bFWFDDm22AM4pLWTQECMpRTFu2d2OM=
 k8s.io/apimachinery v0.22.1/go.mod h1:O3oNtNadZdeOMxHFVxOreoznohCpy0z6mocxbZr7oJ0=
 k8s.io/apiserver v0.22.1/go.mod h1:2mcM6dzSt+XndzVQJX21Gx0/Klo7Aen7i0Ai6tIa400=
+k8s.io/client-go v0.22.0/go.mod h1:GUjIuXR5PiEv/RVK5OODUsm6eZk7wtSWZSaSJbpFdGg=
 k8s.io/client-go v0.22.1 h1:jW0ZSHi8wW260FvcXHkIa0NLxFBQszTlhiAVsU5mopw=
 k8s.io/client-go v0.22.1/go.mod h1:BquC5A4UOo4qVDUtoc04/+Nxp1MeHcVc1HJm1KmG8kk=
 k8s.io/code-generator v0.22.1/go.mod h1:eV77Y09IopzeXOJzndrDyCI88UBok2h6WxAlBwpxa+o=
+k8s.io/component-base v0.22.0/go.mod h1:SXj6Z+V6P6GsBhHZVbWCw9hFjUdUYnJerlhhPnYCBCg=
 k8s.io/component-base v0.22.1 h1:SFqIXsEN3v3Kkr1bS6rstrs1wd45StJqbtgbQ4nRQdo=
 k8s.io/component-base v0.22.1/go.mod h1:0D+Bl8rrnsPN9v0dyYvkqFfBeAd4u7n77ze+p8CMiPo=
 k8s.io/gengo v0.0.0-20200413195148-3a45101e95ac/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=

sidecar/internal/client/client.go

@@ -0,0 +1,130 @@
+/*
+Copyright 2021 The Kubernetes-CSI-Addons 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.
+*/
+
+package client
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"time"
+
+	"github.com/csi-addons/spec/lib/go/identity"
+	"github.com/kubernetes-csi/csi-lib-utils/connection"
+	"github.com/kubernetes-csi/csi-lib-utils/metrics"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+	"k8s.io/klog/v2"
+)
+
+// Client holds the GRPC connenction details
+type Client struct {
+	Client  *grpc.ClientConn
+	Timeout time.Duration
+	// Interval of trying to call Probe() until it succeeds
+	probeInterval time.Duration
+}
+
+// Connect to the GRPC client
+func (c *Client) connect(address string) (*grpc.ClientConn, error) {
+	return connection.Connect(address, metrics.NewCSIMetricsManager(""), connection.OnConnectionLoss(connection.ExitOnConnectionLoss()))
+}
+
+// New creates and returns the GRPC client
+func New(address string, timeout time.Duration) (*Client, error) {
+	c := &Client{}
+	cc, err := c.connect(address)
+	if err != nil {
+		return nil, err
+	}
+	c.Client = cc
+	c.Timeout = timeout
+	c.probeInterval = time.Second
+	return c, nil
+}
+
+// Probe calls Probe() of a CSI driver and waits until the driver becomes ready.
+// Any error other than timeout is returned.
+func (c *Client) Probe() error {
+	for {
+		klog.Info("Probing CSI driver for readiness")
+		ready, err := c.probeOnce()
+		if err != nil {
+			st, ok := status.FromError(err)
+			if !ok {
+				// This is not gRPC error. The probe must have failed before gRPC
+				// method was called, otherwise we would get gRPC error.
+				return fmt.Errorf("CSI driver probe failed: %s", err)
+			}
+			if st.Code() != codes.DeadlineExceeded {
+				return fmt.Errorf("CSI driver probe failed: %s", err)
+			}
+			// Timeout -> driver is not ready. Fall through to sleep() below.
+			klog.Warning("CSI driver probe timed out")
+		} else {
+			if ready {
+				return nil
+			}
+			klog.Warning("CSI driver is not ready")
+		}
+		// Timeout was returned or driver is not ready.
+		time.Sleep(c.probeInterval)
+	}
+}
+
+// probeOnce calls driver Probe() just once and returns its result without any processing.
+func (c *Client) probeOnce() (bool, error) {
+	ctx, cancel := context.WithTimeout(context.TODO(), c.Timeout)
+	defer cancel()
+
+	identityClient := identity.NewIdentityClient(c.Client)
+	req := identity.ProbeRequest{}
+
+	rsp, err := identityClient.Probe(ctx, &req)
+
+	if err != nil {
+		return false, err
+	}
+
+	r := rsp.GetReady()
+	if r == nil {
+		// "If not present, the caller SHALL assume that the plugin is in a ready state"
+		return true, nil
+	}
+	return r.GetValue(), nil
+}
+
+// GetDriverName gets the driver name from the driver
+func (c *Client) GetDriverName() (string, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), c.Timeout)
+	defer cancel()
+
+	identityClient := identity.NewIdentityClient(c.Client)
+
+	req := identity.GetIdentityRequest{}
+	rsp, err := identityClient.GetIdentity(ctx, &req)
+	if err != nil {
+		return "", err
+	}
+
+	name := rsp.GetName()
+	if name == "" {
+		return "", errors.New("driver name is empty")
+	}
+
+	return name, nil
+}

sidecar/internal/csiaddonsnode/csiaddonsnode.go

@@ -0,0 +1,129 @@
+/*
+Copyright 2021 The Kubernetes-CSI-Addons 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.
+*/
+
+package csiaddonsnode
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"strings"
+
+	csiaddonsv1alpha1 "github.com/csi-addons/kubernetes-csi-addons/api/v1alpha1"
+
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime/serializer"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/client-go/kubernetes/scheme"
+	"k8s.io/client-go/rest"
+)
+
+const (
+	podNameEnvKey      = "POD_NAME"
+	podNamespaceEnvKey = "POD_NAMESPACE"
+	podUIDEnvKey       = "POD_UID"
+	podIPEnvKey        = "POD_IP"
+)
+
+// Deploy creates CSIAddonsNode custom resource with all required information.
+func Deploy(config *rest.Config, driverName, nodeID, endpoint string) error {
+	object, err := getCSIAddonsNode(driverName, endpoint, nodeID)
+	if err != nil {
+		return fmt.Errorf("failed to get csiaddonsNode object: %w", err)
+	}
+
+	err = csiaddonsv1alpha1.AddToScheme(scheme.Scheme)
+	if err != nil {
+		return fmt.Errorf("failed to add scheme: %w", err)
+	}
+
+	crdConfig := *config
+	crdConfig.ContentConfig.GroupVersion = &csiaddonsv1alpha1.GroupVersion
+	crdConfig.APIPath = "/apis"
+	crdConfig.NegotiatedSerializer = serializer.NewCodecFactory(scheme.Scheme)
+	crdConfig.UserAgent = rest.DefaultKubernetesUserAgent()
+
+	c, err := rest.UnversionedRESTClientFor(&crdConfig)
+	if err != nil {
+		return fmt.Errorf("failed to get REST Client: %w", err)
+	}
+
+	err = c.Post().
+		Resource("csiaddonsnodes").
+		Namespace(object.Namespace).
+		Name(object.Name).
+		Body(object).
+		Do(context.TODO()).
+		Into(nil)
+
+	if err != nil && !strings.Contains(err.Error(), "already exists") {
+		return fmt.Errorf("failed to create csiaddonsnode object: %w", err)
+	}
+
+	return nil
+}
+
+// lookupEnc returns environmental variable value given the name.
+func lookupEnv(name string) (string, error) {
+	val, ok := os.LookupEnv(name)
+	if !ok {
+		return val, fmt.Errorf("required environmental variable %q not found", name)
+	}
+
+	return val, nil
+}
+
+// getCSIAddonsNode fills required information and return CSIAddonsNode object.
+func getCSIAddonsNode(driverName, endpoint, nodeID string) (*csiaddonsv1alpha1.CSIAddonsNode, error) {
+	podName, err := lookupEnv(podNameEnvKey)
+	if err != nil {
+		return nil, err
+	}
+	podNamespace, err := lookupEnv(podNamespaceEnvKey)
+	if err != nil {
+		return nil, err
+	}
+	podUID, err := lookupEnv(podUIDEnvKey)
+	if err != nil {
+		return nil, err
+	}
+	podIP, err := lookupEnv(podIPEnvKey)
+	if err != nil {
+		return nil, err
+	}
+
+	return &csiaddonsv1alpha1.CSIAddonsNode{
+		ObjectMeta: v1.ObjectMeta{
+			Name:      podUID,
+			Namespace: podNamespace,
+			OwnerReferences: []v1.OwnerReference{
+				{
+					APIVersion: "v1",
+					Kind:       "Pod",
+					Name:       podName,
+					UID:        types.UID(podUID),
+				},
+			},
+		},
+		Spec: csiaddonsv1alpha1.CSIAddonsNodeSpec{
+			Driver: csiaddonsv1alpha1.CSIAddonsNodeDriver{
+				Name:     driverName,
+				EndPoint: podIP + ":" + endpoint,
+				NodeID:   nodeID,
+			},
+		},
+	}, nil
+}