Maxfield Luke
af6077b9c3
Fresh repository history for elektrine/tarakan hosted at https://git.elektrine.com/elektrine/tarakan.
103 lines
2.8 KiB
Elixir
103 lines
2.8 KiB
Elixir
defmodule Tarakan.HostedRepositories.PostReceive do
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@moduledoc """
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Bookkeeping after a successful push, in place of git hooks.
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Hosted repositories never execute hook scripts; this module is invoked by
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the transport layer after `git receive-pack` exits successfully. It is
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best-effort: the push has already succeeded at the git level, so failures
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here are logged and never surfaced to the client.
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"""
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alias Tarakan.Audit
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alias Tarakan.Git.Local
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alias Tarakan.HostedRepositories
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alias Tarakan.HostedRepositories.Storage
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alias Tarakan.Repo
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alias Tarakan.Repositories.Repository
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alias Tarakan.RepositoryCode.Cache
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require Logger
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def run(%Repository{} = repository, scope) do
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repository = Repo.get(Repository, repository.id)
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if repository && HostedRepositories.hosted?(repository) do
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dir = Storage.dir(repository)
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repository
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|> settle_head(dir)
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|> record_push(dir)
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Cache.delete_hosted(repository.id)
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audit_push(repository, scope)
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end
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:ok
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rescue
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error ->
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Logger.warning("post-receive bookkeeping failed: #{Exception.message(error)}")
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:ok
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end
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# A fresh repository's HEAD may point at a branch that was never pushed
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# (e.g. HEAD -> master while the client pushed main). When exactly one
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# branch exists, adopt it so clones and the browser have a default.
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defp settle_head(repository, dir) do
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case Local.head_commit(dir) do
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{:ok, %{branch: branch}} ->
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persist_default_branch(repository, branch)
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:empty ->
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case Local.branches(dir) do
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{:ok, [only_branch]} ->
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_ = Local.run(dir, ["symbolic-ref", "HEAD", "refs/heads/#{only_branch}"])
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persist_default_branch(repository, only_branch)
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_other ->
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repository
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end
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:miss ->
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repository
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end
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end
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defp persist_default_branch(%Repository{default_branch: branch} = repository, branch),
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do: repository
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defp persist_default_branch(repository, branch) do
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repository
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|> Ecto.Changeset.change(default_branch: branch)
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|> Repo.update()
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|> case do
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{:ok, updated} -> updated
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{:error, _changeset} -> repository
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end
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end
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defp record_push(repository, _dir) do
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disk_size =
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case Storage.disk_size_bytes(repository) do
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{:ok, bytes} -> bytes
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_error -> repository.disk_size_bytes
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end
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repository
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|> Ecto.Changeset.change(
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pushed_at: DateTime.utc_now(:microsecond),
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disk_size_bytes: disk_size
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)
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|> Repo.update()
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|> case do
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{:ok, updated} -> updated
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{:error, _changeset} -> repository
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end
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end
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defp audit_push(repository, scope) do
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case Audit.record(scope, :repository_pushed, repository, %{}) do
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{:ok, _event} -> :ok
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{:error, reason} -> Logger.warning("push audit failed: #{inspect(reason)}")
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end
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end
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end
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