CI: Add golint-ci (Azure#888)

* add golint-ci

* add gofmt

* enable linters

* uncap count

* fix linting/fmt issues

.gitattributes

@@ -0,0 +1 @@
+*.go text eol=lf

.github/workflows/cyclonus-netpol-test.yaml

@@ -6,6 +6,8 @@ on:
     branches:
       - main
   pull_request:
+    paths:
+      - 'npm/**'
   schedule:
     # run once a day at midnight
     - cron: '0 0 * * *'

.github/workflows/repo-hygiene.yaml

@@ -0,0 +1,34 @@
+name: golangci-lint
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+  pull_request:
+  schedule:
+    # run once a day at midnight
+    - cron: '0 0 * * *'
+jobs:
+  golangci:
+    strategy:
+      matrix:
+        go-version: [1.16.x]
+        os: [ubuntu-latest, windows-latest]
+    name: Lint
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v2
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v2
+        with:
+          # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
+          version: v1.40
+          # Optional: working directory, useful for monorepos
+          # working-directory: somedir
+
+          # Optional: golangci-lint command line arguments.
+          # args: --issues-exit-code=0
+          args: --timeout=5m
+
+          # Optional: show only new issues if it's a pull request. The default value is `false`.
+          only-new-issues: true

.golangci.yml

@@ -0,0 +1,24 @@
+issues:
+  max-same-issues: 0
+  max-issues-per-linter: 0
+
+enable:
+    - bodyclose
+    - deadcode
+    - errcheck
+    - goconst
+    - gocritic
+    - gocyclo
+    - gofmt
+    - goimports
+    - golint
+    - gomnd
+    - goprintffuncname
+    - gosec
+    - gosimple
+    - govet
+    - ineffassign
+    - interfacer
+    - lll
+    - misspell
+    - nakedret

cni/netconfig.go

@@ -131,4 +131,4 @@ func GetPoliciesFromNwCfg(kvp []KVPair) []policy.Policy {
 func (nwcfg *NetworkConfig) Serialize() []byte {
 	bytes, _ := json.Marshal(nwcfg)
 	return bytes
-}
+}

cni/network/invoker.go

@@ -1,20 +1,20 @@
-package network
-
-import (
-	"net"
-
-	"github.com/Azure/azure-container-networking/cni"
-	cniTypesCurr "github.com/containernetworking/cni/pkg/types/current"
-)
-
-// IPAMInvoker is used by the azure-vnet CNI plugin to call different sources for IPAM.
-// This interface can be used to call into external binaries, like the azure-vnet-ipam binary,
-// or simply act as a client to an external ipam, such as azure-cns.
-type IPAMInvoker interface {
-
-	//Add returns two results, one IPv4, the other IPv6.
-	Add(nwCfg *cni.NetworkConfig, subnetPrefix *net.IPNet, options map[string]interface{}) (*cniTypesCurr.Result, *cniTypesCurr.Result, error)
-
-	//Delete calls to the invoker source, and returns error. Returning an error here will fail the CNI Delete call.
-	Delete(address *net.IPNet, nwCfg *cni.NetworkConfig, options map[string]interface{}) error
-}
+package network
+
+import (
+	"net"
+
+	"github.com/Azure/azure-container-networking/cni"
+	cniTypesCurr "github.com/containernetworking/cni/pkg/types/current"
+)
+
+// IPAMInvoker is used by the azure-vnet CNI plugin to call different sources for IPAM.
+// This interface can be used to call into external binaries, like the azure-vnet-ipam binary,
+// or simply act as a client to an external ipam, such as azure-cns.
+type IPAMInvoker interface {
+
+	//Add returns two results, one IPv4, the other IPv6.
+	Add(nwCfg *cni.NetworkConfig, subnetPrefix *net.IPNet, options map[string]interface{}) (*cniTypesCurr.Result, *cniTypesCurr.Result, error)
+
+	//Delete calls to the invoker source, and returns error. Returning an error here will fail the CNI Delete call.
+	Delete(address *net.IPNet, nwCfg *cni.NetworkConfig, options map[string]interface{}) error
+}