Move the tash tool here

Moves the current state of the `tash` code from hacks[^1] and adjusts
the `hack/generate-ta-tasks.sh` script to use `go run` and run the local
version of it.

Resolves: https://issues.redhat.com/browse/EC-690

[^1]: https://github.com/enterprise-contract/hacks/tree/main/tash

.github/workflows/checkton.yaml

@@ -21,6 +21,7 @@ jobs:
           # Set to false when re-enabling SARIF uploads
           fail-on-findings: true
           find-copies-harder: true
+          exclude-regex: ^ta-generator
 
       # Currently, code scanning alerts annoyingly stay open even if you fix them.
       # Don't upload SARIF until https://github.com/orgs/community/discussions/132787 is resolved.

hack/generate-ta-tasks.sh

@@ -1,29 +1,23 @@
 #!/usr/bin/env bash
 
 set -o errexit
+set -o errtrace
 set -o nounset
 set -o pipefail
 set -o posix
 
 shopt -s globstar nullglob
 
+command -v go &> /dev/null || { echo Please install golang to run this tool; exit 1; }
+[[ "$(go env GOVERSION)" == @(go1|go1.[1-9]+(|.*|rc*|beta*)|go1.1[0-9]+(|.*|rc*|beta*)|go1.20*) ]] && { echo Please install golang 1.21.0 or newer; exit 1; }
+
 HACK_DIR="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
 ROOT_DIR="$(git rev-parse --show-toplevel)"
 TASK_DIR="$(realpath "${ROOT_DIR}/task")"
 
-if ! command -v tash &> /dev/null; then
-  echo INFO: tash command is not available will download and use the latest version
-  tash_dir="$(mktemp -d)"
-  trap 'rm -rf ${tash_dir}' EXIT
-  tash_url=https://github.com/enterprise-contract/hacks/releases/download/latest/tash
-  echo INFO: downloading from ${tash_url} to "${tash_dir}"
-  curl --no-progress-meter --location --output "${tash_dir}/tash" "${tash_url}"
-  echo INFO: SHA256: "$(sha256sum "${tash_dir}/tash")"
-  chmod +x "${tash_dir}/tash"
-  tash() {
-    "${tash_dir}/tash" "$@"
-  }
-fi
+tash() {
+  go run -C "${ROOT_DIR}/ta-generator/" github.com/konflux-ci/build-definitions/ta-generator "$@"
+}
 
 declare -i changes=0
 emit() {
@@ -44,7 +38,8 @@ fi
 cd "${TASK_DIR}"
 for recipe_path in **/recipe.yaml; do
     task_path="${recipe_path%/recipe.yaml}/$(basename "${recipe_path%/*/*}").yaml"
-    cat <<< "$(tash "${recipe_path}")" > "${task_path}"
+    sponge=$(tash "${TASK_DIR}/${recipe_path}")
+    echo "${sponge}" > "${task_path}"
     readme_path="${recipe_path%/recipe.yaml}/README.md"
     "${HACK_DIR}/generate-readme.sh" "${task_path}" > "${readme_path}"
     if ! git diff --quiet HEAD "${task_path}"; then

ta-generator/README.md

@@ -0,0 +1,17 @@
+# Trusted Artifacts variants generator
+
+## Description and usage
+
+The code in here will process a set of directions in `recipe.yaml` file and
+based on that and a set of builtin conventions generate the Tekton Task
+definition in YAML format.
+
+Usage (from this directory):
+
+    go run . path/to/recipe.yaml
+
+The generated Trusted Artifacts Task is provided on the standard output.
+
+## Development
+
+To build the tool executable run `go build`, to run the tests run `go test`.

ta-generator/expect.go

@@ -0,0 +1,22 @@
+package main
+
+import (
+	"fmt"
+	"os"
+)
+
+func expect(err error) {
+	if err == nil {
+		return
+	}
+	fmt.Fprint(os.Stderr, err)
+	os.Exit(1)
+}
+
+func expectValue[T any](val T, err error) T {
+	if err != nil {
+		expect(err)
+	}
+
+	return val
+}

ta-generator/go.mod

@@ -0,0 +1,91 @@
+module github.com/konflux-ci/build-definitions/ta-generator
+
+go 1.22.3
+
+require (
+	github.com/google/go-cmp v0.6.0
+	github.com/google/go-containerregistry v0.19.1
+	github.com/tektoncd/pipeline v0.60.1
+	github.com/zregvart/tkn-fmt v0.0.0-20240613172239-ba04662da674
+	k8s.io/api v0.30.1
+	mvdan.cc/sh/v3 v3.8.0
+	sigs.k8s.io/yaml v1.4.0
+)
+
+require (
+	contrib.go.opencensus.io/exporter/ocagent v0.7.1-0.20200907061046-05415f1de66d // indirect
+	contrib.go.opencensus.io/exporter/prometheus v0.4.2 // indirect
+	github.com/antlr4-go/antlr/v4 v4.13.1 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/blendle/zapdriver v1.3.1 // indirect
+	github.com/braydonk/yaml v0.7.0 // indirect
+	github.com/census-instrumentation/opencensus-proto v0.4.1 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/containerd/stargz-snapshotter/estargz v0.14.3 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/docker/cli v24.0.7+incompatible // indirect
+	github.com/docker/distribution v2.8.2+incompatible // indirect
+	github.com/docker/docker v26.0.0+incompatible // indirect
+	github.com/docker/docker-credential-helpers v0.7.0 // indirect
+	github.com/emicklei/go-restful/v3 v3.12.1 // indirect
+	github.com/evanphx/json-patch/v5 v5.9.0 // indirect
+	github.com/go-kit/log v0.2.1 // indirect
+	github.com/go-logfmt/logfmt v0.6.0 // indirect
+	github.com/go-logr/logr v1.4.2 // indirect
+	github.com/go-openapi/jsonpointer v0.21.0 // indirect
+	github.com/go-openapi/jsonreference v0.21.0 // indirect
+	github.com/go-openapi/swag v0.23.0 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
+	github.com/golang/protobuf v1.5.4 // indirect
+	github.com/google/cel-go v0.20.1 // indirect
+	github.com/google/gnostic-models v0.6.8 // indirect
+	github.com/google/gofuzz v1.2.0 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.20.0 // indirect
+	github.com/josharian/intern v1.0.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/compress v1.16.6 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/mitchellh/go-homedir v1.1.0 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/opencontainers/go-digest v1.0.0 // indirect
+	github.com/opencontainers/image-spec v1.1.0 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/prometheus/client_golang v1.19.1 // indirect
+	github.com/prometheus/client_model v0.6.1 // indirect
+	github.com/prometheus/common v0.54.0 // indirect
+	github.com/prometheus/procfs v0.15.1 // indirect
+	github.com/prometheus/statsd_exporter v0.26.1 // indirect
+	github.com/sirupsen/logrus v1.9.3 // indirect
+	github.com/stoewer/go-strcase v1.3.0 // indirect
+	github.com/vbatts/tar-split v0.11.3 // indirect
+	go.opencensus.io v0.24.0 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	go.uber.org/zap v1.27.0 // indirect
+	golang.org/x/exp v0.0.0-20240604190554-fc45aab8b7f8 // indirect
+	golang.org/x/net v0.26.0 // indirect
+	golang.org/x/oauth2 v0.21.0 // indirect
+	golang.org/x/sync v0.7.0 // indirect
+	golang.org/x/sys v0.21.0 // indirect
+	golang.org/x/term v0.21.0 // indirect
+	golang.org/x/text v0.16.0 // indirect
+	golang.org/x/time v0.5.0 // indirect
+	gomodules.xyz/jsonpatch/v2 v2.4.0 // indirect
+	google.golang.org/api v0.183.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20240604185151-ef581f913117 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240604185151-ef581f913117 // indirect
+	google.golang.org/grpc v1.64.0 // indirect
+	google.golang.org/protobuf v1.34.1 // indirect
+	gopkg.in/inf.v0 v0.9.1 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	k8s.io/apimachinery v0.30.1 // indirect
+	k8s.io/client-go v0.30.1 // indirect
+	k8s.io/klog/v2 v2.120.1 // indirect
+	k8s.io/kube-openapi v0.0.0-20240521193020-835d969ad83a // indirect
+	k8s.io/utils v0.0.0-20240502163921-fe8a2dddb1d0 // indirect
+	knative.dev/pkg v0.0.0-20240604134003-58135c2c0694 // indirect
+	sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect
+	sigs.k8s.io/structured-merge-diff/v4 v4.4.1 // indirect
+)