Create artifact generation script

.gitignore

@@ -1 +1 @@
-/Manifest.toml
+Manifest.toml

Project.toml

@@ -1,7 +1,10 @@
 name = "TZJData"
 uuid = "dc5dba14-91b3-4cab-a142-028a31da12f7"
 authors = ["Curtis Vogt <[email protected]>"]
-version = "0.0.1"
+version = "0.0.0"
+
+[deps]
+Artifacts = "56f22d72-fd6d-98f1-02f0-08ddc0907c33"
 
 [compat]
 julia = "1.6"

gen/Project.toml

@@ -0,0 +1,19 @@
+[deps]
+CodecZlib = "944b1d66-785c-5afd-91f1-9de20f533193"
+LibGit2 = "76f85450-5226-5b5a-8eaa-529ad045b433"
+Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
+SHA = "ea8e919c-243c-51af-8825-aaa63cd721ce"
+Tar = "a4e569a6-e804-4fa4-b0f3-eef7a1d5b13e"
+TimeZones = "f269a46b-ccf7-5d73-abea-4c690281aa53"
+URIs = "5c2747f8-b7ea-4ff2-ba2e-563bfd36b1d4"
+ghr_jll = "07c12ed4-43bc-5495-8a2a-d5838ef8d533"
+
+[compat]
+CodecZlib = "0.7"
+Pkg = "1"
+SHA = "0.7"
+Tar = "1"
+TimeZones = "1"
+URIs = "1"
+ghr_jll = "0.14"
+julia = "1.8"

gen/make.jl

@@ -0,0 +1,185 @@
+using Base: SHA1
+using CodecZlib: GzipCompressorStream, GzipDecompressorStream
+using LibGit2: LibGit2
+using Pkg.Artifacts: bind_artifact!
+using Pkg.Types: read_project, write_project
+using TimeZones: TZData, _scratch_dir
+using TimeZones.TZData: tzdata_latest_version
+using SHA: sha256
+using Tar: Tar
+using TOML: TOML
+using URIs: URI
+using ghr_jll: ghr
+
+const GH_RELEASE_ASSET_PATH_REGEX = r"""
+    ^/(?<owner>[^/]+)/(?<repo_name>[^/]+)/
+    releases/download/
+    (?<tag>[^/]+)/(?<file_name>[^/]+)$
+    """x
+
+function create_tarball(dir, tarball)
+    return open(GzipCompressorStream, tarball, "w") do tar
+        Tar.create(dir, tar)
+    end
+end
+
+function artifact_checksums(tarball::AbstractString)
+    return open(tarball, "r") do io
+        artifact_checksums(io)
+    end
+end
+
+# Compute the Artifact.toml `git-tree-sha1`.
+function tree_hash_sha1(tarball_path)
+    return open(GzipDecompressorStream, tarball_path, "r") do tar
+        SHA1(Tar.tree_hash(tar))
+    end
+end
+
+# Compute the Artifact.toml `sha256` from the compressed archive.
+function sha256sum(tarball_path)
+    return open(tarball_path, "r") do tar
+        bytes2hex(sha256(tar))
+    end
+end
+
+function remote_url(repo_root::AbstractString, name::AbstractString="origin")
+    return LibGit2.with(LibGit2.GitRepo(repo_root)) do repo
+        LibGit2.with(LibGit2.lookup_remote(repo, name)) do remote
+            LibGit2.url(remote)
+        end
+    end
+end
+
+function upload_to_github_release(
+    archive_path::AbstractString,
+    archive_url::AbstractString,
+    commit;
+    kwargs...
+)
+    return upload_to_github_release(archive_path, parse(URI, artifact_url), commit; kwargs...)
+end
+
+# TODO: Does this work properly with directories?
+function upload_to_github_release(archive_path::AbstractString, archive_uri::URI, commit; kwargs...)
+    # uri = parse(URI, artifact_url)
+    if archive_uri.host != "github.com"
+        throw(ArgumentError("Artifact URL is not for github.com: $(archive_uri)"))
+    end
+
+    m = match(GH_RELEASE_ASSET_PATH_REGEX, archive_uri.path)
+    if m === nothing
+        throw(ArgumentError(
+            "Artifact URL is not a GitHub release asset path: $(archive_uri)"
+        ))
+    end
+
+    # The `ghr` utility uses the local file name for the release asset. In order to have
+    # have the asset match the specified URL we'll temporarily rename the file.
+    org_archive_name = nothing
+    if basename(archive_path) != m[:file_name]
+        org_archive_name = basename(archive_path)
+        archive_path = mv(archive_path, joinpath(dirname(archive_path), m[:file_name]))
+    end
+
+    upload_to_github_release(m[:owner], m[:repo_name], commit, m[:tag], archive_path; kwargs...)
+
+    # Rename the archive back to the original name
+    if org_archive_name !== nothing
+        mv(archive_path, joinpath(dirname(archive_path), org_archive_name))
+    end
+
+    return nothing
+end
+
+
+function upload_to_github_release(owner, repo_name, commit, tag, path; token=ENV["GITHUB_TOKEN"])
+    # Based on: https://github.com/JuliaPackaging/BinaryBuilder.jl/blob/d40ec617d131a1787851559ef1a9f04efce19f90/src/AutoBuild.jl#L487
+    # TODO: Passing in a directory path uploads multiple assets
+    # TODO: Would be nice to perform parallel uploads
+    cmd = ```
+        $(ghr()) \
+        -owner $owner \
+        -repository $repo_name \
+        -commitish $commit \
+        -token $token \
+        $tag $path
+    ```
+
+    run(cmd)
+end
+
+# TODO: Re-running always bumps version
+if abspath(PROGRAM_FILE) == @__FILE__
+    tzdata_version = tzdata_latest_version()
+    tarball_name = "tzjfile-v1-tzdata$(tzdata_version).tar.gz"
+
+    # Build tzjfile artifact content
+    # TZData.cleanup(tzdata_version, _scratch_dir())
+    compiled_dir = TZData.build(tzdata_version, _scratch_dir())
+
+    @info "Creating tarball $tarball_name"
+    tarball_path = joinpath(tempdir(), tarball_name)
+    create_tarball(compiled_dir, tarball_path)
+
+    repo_path = joinpath(@__DIR__, "..")
+    pkg_url = remote_url(repo_path)
+
+    # Read Project.toml
+    project_path = joinpath(repo_path, "Project.toml")
+    project = read_project(project_path)
+    old_version = project.version
+    new_version = Base.nextpatch(project.version)
+
+    # Include tzdata version in build number
+    new_version = VersionNumber(
+        new_version.major,
+        new_version.minor,
+        new_version.patch,
+        (),
+        ("tzdata$(tzdata_version)",),
+    )
+
+    @info "Bumping package $(project.name) from $old_version -> $new_version"
+    project.version = new_version
+    write_project(project, project_path)
+
+    tag = "v$(new_version)"
+    artifact_url = "$(pkg_url)/releases/download/$(tag)/$(basename(tarball_path))"
+
+    artifacts_toml = joinpath(repo_path, "Artifacts.toml")
+    bind_artifact!(
+        artifacts_toml,
+        "tzjdata",
+        tree_hash_sha1(tarball_path);
+        download_info=[(artifact_url, sha256sum(tarball_path))],
+        force=true,
+    )
+
+    # TODO: Ensure no other files are staged before committing
+    @info "Committing and pushing Artifact.toml"
+    branch = "main"
+    message = "Use tzdata$(tzdata_version)"
+
+    # TODO: ghr and LibGit2 use different credential setups. Double check
+    # what BB does here.
+    Base.shred!(LibGit2.CredentialPayload()) do credentials
+        LibGit2.with(LibGit2.GitRepo(repo_path)) do repo
+            # TODO: This allows empty commits
+            LibGit2.add!(repo, basename(artifacts_toml))
+            LibGit2.commit(repo, message)
+
+            # Same as "refs/heads/$branch" but fails if branch doesn't exist locally
+            branch_ref = LibGit2.lookup_branch(repo, branch)
+            refspecs = [LibGit2.name(branch_ref)]
+
+            # TODO: Expecting users to have their branch up to date. Pushing outdated
+            # branches will fail like normal git CLI
+            LibGit2.push(repo; refspecs, credentials)
+        end
+    end
+
+    upload_to_github_release(tarball_path, artifact_url, branch)
+end
+
+

src/TZJData.jl

@@ -1,5 +1,5 @@
 module TZJData
 
-# Write your package code here.
+using Artifacts
 
 end