[COMPLIANCE] Add copyright and license headers

.copywrite.hcl

@@ -0,0 +1,30 @@
+schema_version = 1
+
+project {
+  license        = "MPL-2.0"
+  copyright_year = 2019
+
+  header_ignore = [
+    # changie tooling configuration and CHANGELOG entries (prose)
+    ".changes/unreleased/*.yaml",
+    ".changie.yaml",
+
+    # examples used within documentation (prose)
+    "examples/**",
+
+    # GitHub issue template configuration
+    ".github/ISSUE_TEMPLATE/*.yml",
+
+    # GitHub Actions workflow-specific configurations
+    ".github/labeler-*.yml",
+
+    # golangci-lint tooling configuration
+    ".golangci.yml",
+
+    # GoReleaser tooling configuration
+    ".goreleaser.yml",
+
+    # Release Engineering tooling configuration
+    ".release/*.hcl",
+  ]
+}

.github/CONTRIBUTING.md

@@ -70,6 +70,7 @@ before raising a pull request.
   Refer to the [dependency updates](#dependency-updates) section for more information about how
   this project maintains existing dependencies.
 * [ ] **Changelog**: Refer to the [changelog](#changelog) section for more information about how to create changelog entries.
+* [ ] **License Headers**: All source code requires a license header at the top of the file, refer to [License Headers](#license-headers) for information on how to autogenerate these headers.
 
 ### Dependency Updates
 
@@ -132,4 +133,10 @@ The lists below are general guidelines to decide whether a change should have an
 * Bug fixes
 * Enhancements
 * Deprecations
-* Breaking changes and removals
+* Breaking changes and removals
+
+### License Headers
+
+All source code files (excluding autogenerated files like `go.mod`, prose, and files excluded in [.copywrite.hcl](../.copywrite.hcl)) must have a license header at the top.
+
+This can be autogenerated by running `make generate` or running `go generate ./...` in the [/tools](../tools) directory.

.github/dependabot.yml

@@ -15,3 +15,7 @@ updates:
     schedule:
       # Check for updates to Go modules every weekday
       interval: "daily"
+  - package-ecosystem: "gomod"
+    directory: "/copywrite"
+    schedule:
+      interval: "daily"

.github/workflows/compliance.yml

@@ -0,0 +1,17 @@
+name: compliance
+
+on:
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  # Reference: ENGSRV-059
+  copywrite:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab # v3.5.2
+      - uses: hashicorp/setup-copywrite@867a1a2a064a0626db322392806428f7dc59cb3e # v1.1.2
+      - run: copywrite headers --plan
+      - run: copywrite license --plan

GNUmakefile

@@ -10,8 +10,10 @@ install: build
 lint:
 	golangci-lint run
 
+# Generate docs and copywrite headers
 generate:
 	go generate ./...
+	cd copywrite; go generate ./...
 
 fmt:
 	gofmt -s -w -e .

copywrite/copywrite.go

@@ -0,0 +1,13 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
+//go:build generate
+
+package copywrite
+
+import (
+	// copywrite header generation
+	_ "github.com/hashicorp/copywrite"
+)
+
+//go:generate go run github.com/hashicorp/copywrite headers -d .. --config ../.copywrite.hcl

copywrite/go.mod

@@ -0,0 +1,63 @@
+module tools
+
+go 1.19
+
+require github.com/hashicorp/copywrite v0.16.3
+
+require (
+	github.com/AlecAivazis/survey/v2 v2.3.6 // indirect
+	github.com/asaskevich/govalidator v0.0.0-20200907205600-7a23bdc65eef // indirect
+	github.com/bmatcuk/doublestar/v4 v4.6.0 // indirect
+	github.com/bradleyfalzon/ghinstallation/v2 v2.1.0 // indirect
+	github.com/cli/go-gh v1.0.0 // indirect
+	github.com/cli/safeexec v1.0.0 // indirect
+	github.com/cli/shurcooL-graphql v0.0.2 // indirect
+	github.com/fatih/color v1.13.0 // indirect
+	github.com/fsnotify/fsnotify v1.5.4 // indirect
+	github.com/go-openapi/errors v0.20.2 // indirect
+	github.com/go-openapi/strfmt v0.21.3 // indirect
+	github.com/golang-jwt/jwt/v4 v4.4.2 // indirect
+	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/google/go-github/v45 v45.2.0 // indirect
+	github.com/google/go-querystring v1.1.0 // indirect
+	github.com/hashicorp/go-hclog v1.4.0 // indirect
+	github.com/hashicorp/hcl v1.0.0 // indirect
+	github.com/henvic/httpretty v0.0.6 // indirect
+	github.com/inconshreveable/mousetrap v1.0.1 // indirect
+	github.com/jedib0t/go-pretty v4.3.0+incompatible // indirect
+	github.com/jedib0t/go-pretty/v6 v6.4.4 // indirect
+	github.com/joho/godotenv v1.3.0 // indirect
+	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 // indirect
+	github.com/knadh/koanf v1.5.0 // indirect
+	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.17 // indirect
+	github.com/mattn/go-runewidth v0.0.13 // indirect
+	github.com/mergestat/timediff v0.0.3 // indirect
+	github.com/mgutz/ansi v0.0.0-20200706080929-d51e80ef957d // indirect
+	github.com/mitchellh/copystructure v1.2.0 // indirect
+	github.com/mitchellh/go-homedir v1.1.0 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
+	github.com/mitchellh/reflectwalk v1.0.2 // indirect
+	github.com/muesli/termenv v0.12.0 // indirect
+	github.com/oklog/ulid v1.3.1 // indirect
+	github.com/rivo/uniseg v0.2.0 // indirect
+	github.com/rogpeppe/go-internal v1.10.0 // indirect
+	github.com/samber/lo v1.37.0 // indirect
+	github.com/spf13/cobra v1.6.1 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/thanhpk/randstr v1.0.4 // indirect
+	github.com/thlib/go-timezone-local v0.0.0-20210907160436-ef149e42d28e // indirect
+	go.mongodb.org/mongo-driver v1.10.0 // indirect
+	golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d // indirect
+	golang.org/x/exp v0.0.0-20220303212507-bbda1eaf7a17 // indirect
+	golang.org/x/net v0.0.0-20220923203811-8be639271d50 // indirect
+	golang.org/x/oauth2 v0.0.0-20220411215720-9780585627b5 // indirect
+	golang.org/x/sync v0.1.0 // indirect
+	golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab // indirect
+	golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 // indirect
+	golang.org/x/text v0.3.7 // indirect
+	google.golang.org/appengine v1.6.7 // indirect
+	google.golang.org/protobuf v1.28.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)