Restore Policy options added (#350)

* Issue #349:
Added policy for restore to code base.  Policy Items are placed in the `internal/common` directory

.github/workflows/lint.yml

@@ -21,9 +21,28 @@ jobs:
         with:
           go-version: 1.18
 
+      - name: Cache Go build
+        uses: actions/cache@v3
+        id: mybuild
+        with:
+          path: ~/.cache/go-build
+          key: ${{ runner.os }}-go-build-${{ hashFiles('**/go.sum')}}
+      
+      - name: Cache Go Mod
+        uses: actions/cache@v3
+        id: cache
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-mod${{ hashFiles('**/go.sum')}}
+
       - name: Download package dependencies
+        if: steps.cache.outputs.cache-hit != 'true'
         run: go mod download
 
+      - name: Build for Lint
+        if: steps.mybuild.outputs.cache-hit != 'true'
+        run: go build ./...
+
       - name: Go Lint
         uses: golangci/golangci-lint-action@v3.2.0
         with:

src/internal/common/policy.go

@@ -0,0 +1,12 @@
+package common
+
+// Policy is a type that defines the actions taken
+type RestorePolicy int
+
+//go:generate stringer -type=RestorePolicy
+const (
+	Unknown RestorePolicy = iota
+	Copy
+	Drop
+	Replace
+)

src/internal/common/restorepolicy_string.go

@@ -0,0 +1,26 @@
+// Code generated by "stringer -type=RestorePolicy"; DO NOT EDIT.
+
+package common
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[Unknown-0]
+	_ = x[Copy-1]
+	_ = x[Drop-2]
+	_ = x[Replace-3]
+}
+
+const _RestorePolicy_name = "UnknownCopyDropReplace"
+
+var _RestorePolicy_index = [...]uint8{0, 7, 11, 15, 22}
+
+func (i RestorePolicy) String() string {
+	if i < 0 || i >= RestorePolicy(len(_RestorePolicy_index)-1) {
+		return "RestorePolicy(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+	return _RestorePolicy_name[_RestorePolicy_index[i]:_RestorePolicy_index[i+1]]
+}