Merge pull request #317 from Zemnmez/version-pipelining

version pipelining

.github/workflows/ci.yml

@@ -97,14 +97,10 @@ jobs:
         uses: actions/checkout@v3
         with:
           fetch-depth: 0
-      - name: Checkout versioned branch
-        run: git switch versioned
-      - name: Merge with main
-        run: git merge main
       - name: Open PR to 'versioned' branch
-        run: gh pr create -f
+        run: gh pr create -f --head main --base versioned
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - name: Set PR to merge automatically
-        run: gh pr merge --auto --merge
+        run: gh pr merge --auto --merge --head main --base versioned
 

bzl/hash/BUILD

@@ -0,0 +1 @@
+# no output defined here

bzl/hash/rules.bzl

@@ -0,0 +1,50 @@
+def _impl(ctx):
+    # Create actions to generate the three output files.
+    # Actions are run only when the corresponding file is requested.
+
+    inputs = ctx.files.srcs
+    arguments = [ file.path for file in ctx.files.srcs ]
+
+    ctx.actions.run_shell(
+        outputs = [ctx.outputs.md5],
+        inputs = inputs,
+        command = "md5sum $@ > {}".format( ctx.outputs.md5.path),
+        arguments = arguments,
+    )
+
+    ctx.actions.run_shell(
+        outputs = [ctx.outputs.sha1],
+        inputs = inputs,
+        command = "sha1sum $@ > {}".format( ctx.outputs.sha1.path),
+        arguments = arguments,
+    )
+
+    ctx.actions.run_shell(
+        outputs = [ctx.outputs.sha256],
+        inputs = inputs,
+        command = "sha256sum $@ > {}".format( ctx.outputs.sha256.path),
+        arguments = arguments,
+    )
+
+    # By default (if you run `bazel build` on this target, or if you use it as a
+    # source of another target), only the sha256 is computed.
+    return DefaultInfo(files = depset([ctx.outputs.sha256]))
+
+_hashes = rule(
+    implementation = _impl,
+    attrs = {
+        "srcs": attr.label_list(mandatory = True, allow_files = True),
+        "md5": attr.output(),
+        "sha1": attr.output(),
+        "sha256": attr.output(),
+    },
+)
+
+def hashes(**kwargs):
+    name = kwargs["name"]
+    _hashes(
+        md5 = "%s.md5" % name,
+        sha1 = "%s.sha1" % name,
+        sha256 = "%s.sha256" % name,
+        **kwargs
+    )

bzl/hash/test/BUILD

@@ -0,0 +1,13 @@
+load("//bzl/hash:rules.bzl", "hashes")
+load("@build_bazel_rules_nodejs//:index.bzl", "generated_file_test")
+
+hashes(
+    name = "hashes",
+    srcs = [ "input1.txt", "input2.txt" ]
+)
+
+generated_file_test(
+    name = "version_concat_test",
+    generated = ":hashes",
+    src = "expected.txt"
+)

bzl/hash/test/expected.txt

@@ -0,0 +1,2 @@
+2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824  bzl/hash/test/input1.txt
+486ea46224d1bb4fb680f34f7c9ad96a8f24ec88be73ea8e5a6c65260e9cb8a7  bzl/hash/test/input2.txt

bzl/hash/test/input1.txt

@@ -0,0 +1 @@
+hello

bzl/hash/test/input2.txt

@@ -0,0 +1 @@
+world