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// Copyright 2022 Huawei Cloud Computing Technology Co., Ltd.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "src/other_tools/root_maps/commit_git_map.hpp"
#include <algorithm>
#include "src/buildtool/file_system/git_repo.hpp"
#include "src/utils/cpp/tmp_dir.hpp"
namespace {
[[nodiscard]] auto GitURLIsPath(std::string const& url) noexcept -> bool {
auto prefixes = std::vector<std::string>{"ssh://", "http://", "https://"};
// return true if no URL prefix exists
return std::none_of(
prefixes.begin(), prefixes.end(), [url](auto const& prefix) {
return (url.rfind(prefix, 0) == 0);
});
}
} // namespace
/// \brief Create a CommitGitMap object
auto CreateCommitGitMap(
gsl::not_null<CriticalGitOpMap*> const& critical_git_op_map,
JustMR::PathsPtr const& just_mr_paths,
std::size_t jobs) -> CommitGitMap {
auto commit_to_git = [critical_git_op_map, just_mr_paths](auto ts,
auto setter,
auto logger,
auto /* unused */,
auto const& key) {
// get root for repo (making sure that if repo is a path, it is
// absolute)
std::string fetch_repo = key.repo_url;
if (GitURLIsPath(fetch_repo)) {
fetch_repo = std::filesystem::absolute(fetch_repo).string();
}
std::filesystem::path repo_root =
JustMR::Utils::GetGitRoot(just_mr_paths, fetch_repo);
// ensure git repo
// define Git operation to be done
GitOpKey op_key = {
{
repo_root, // target_path
"", // git_hash
"", // branch
std::nullopt, // message
not just_mr_paths->git_checkout_locations.contains(
fetch_repo) // init_bare
},
GitOpType::ENSURE_INIT};
critical_git_op_map->ConsumeAfterKeysReady(
ts,
{std::move(op_key)},
[key,
fetch_repo,
repo_root,
critical_git_op_map,
ts,
setter,
logger](auto const& values) {
GitOpValue op_result = *values[0];
// check flag
if (not op_result.result) {
(*logger)("Git init failed",
/*fatal=*/true);
return;
}
// setup a wrapped_logger
auto wrapped_logger = std::make_shared<AsyncMapConsumerLogger>(
[logger, target_path = repo_root](auto const& msg,
bool fatal) {
(*logger)(fmt::format("While ensuring commit for "
"repository {}:\n{}",
target_path.string(),
msg),
fatal);
});
EnsureCommit(key,
fetch_repo,
repo_root,
op_result.git_cas,
critical_git_op_map,
ts,
setter,
wrapped_logger);
},
[logger, target_path = repo_root](auto const& msg, bool fatal) {
(*logger)(fmt::format("While running critical Git op "
"ENSURE_INIT for target {}:\n{}",
target_path.string(),
msg),
fatal);
});
};
return AsyncMapConsumer<GitRepoInfo, nlohmann::json>(commit_to_git, jobs);
}
void EnsureCommit(GitRepoInfo const& repo_info,
std::string const& fetch_repo,
std::filesystem::path const& repo_root,
GitCASPtr const& git_cas,
gsl::not_null<CriticalGitOpMap*> const& critical_git_op_map,
gsl::not_null<TaskSystem*> const& ts,
CommitGitMap::SetterPtr const& ws_setter,
CommitGitMap::LoggerPtr const& logger) {
// ensure commit exists, and fetch if needed
auto git_repo = GitRepo::Open(git_cas); // link fake repo to odb
if (not git_repo) {
(*logger)(
fmt::format("Could not open repository {}", repo_root.string()),
/*fatal=*/true);
return;
}
// setup wrapped logger
auto wrapped_logger = std::make_shared<AsyncMapConsumerLogger>(
[logger](auto const& msg, bool fatal) {
(*logger)(fmt::format("While checking commit exists:\n{}", msg),
fatal);
});
auto is_commit_present =
git_repo->CheckCommitExists(repo_info.hash, wrapped_logger);
if (is_commit_present == std::nullopt) {
return;
}
if (not is_commit_present.value()) {
// if commit not there, fetch it
// get refspec for branch
GitOpKey op_key = {{
repo_root, // target_path
"", // git_hash
repo_info.branch, // branch
},
GitOpType::GET_BRANCH_REFNAME};
critical_git_op_map->ConsumeAfterKeysReady(
ts,
{std::move(op_key)},
[critical_git_op_map,
git_cas,
repo_info,
fetch_repo,
repo_root,
ts,
ws_setter,
logger](auto const& values) {
GitOpValue op_result = *values[0];
// check flag
if (not op_result.result) {
(*logger)("Get branch refname failed",
/*fatal=*/true);
return;
}
// ensure commit exists, and fetch if needed
auto git_repo =
GitRepo::Open(git_cas); // link fake repo to odb
if (not git_repo) {
(*logger)(fmt::format("Could not open repository {}",
repo_root.string()),
/*fatal=*/true);
return;
}
// do fetch
auto tmp_dir = JustMR::Utils::CreateTypedTmpDir("fetch");
if (not tmp_dir) {
(*logger)("Failed to create fetch tmp directory!",
/*fatal=*/true);
return;
}
// setup wrapped logger
auto wrapped_logger = std::make_shared<AsyncMapConsumerLogger>(
[logger](auto const& msg, bool fatal) {
(*logger)(fmt::format(
"While fetching via tmp repo:\n{}", msg),
fatal);
});
if (not git_repo->FetchViaTmpRepo(tmp_dir->GetPath(),
fetch_repo,
*op_result.result,
wrapped_logger)) {
return;
}
// setup wrapped logger
wrapped_logger = std::make_shared<AsyncMapConsumerLogger>(
[logger](auto const& msg, bool fatal) {
(*logger)(fmt::format(
"While checking commit exists:\n{}", msg),
fatal);
});
// check if commit exists now, after fetch
auto is_commit_present =
git_repo->CheckCommitExists(repo_info.hash, wrapped_logger);
if (not is_commit_present) {
return;
}
if (not *is_commit_present) {
// commit could not be fetched, so fail
(*logger)(fmt::format("Could not update commit from branch "
"{} for remote {}",
repo_info.branch,
fetch_repo),
/*fatal=*/true);
return;
}
// keep tag
GitOpKey op_key = {{
repo_root, // target_path
repo_info.hash, // git_hash
"", // branch
"Keep referenced tree alive" // message
},
GitOpType::KEEP_TAG};
critical_git_op_map->ConsumeAfterKeysReady(
ts,
{std::move(op_key)},
[git_cas, repo_info, repo_root, ws_setter, logger](
auto const& values) {
GitOpValue op_result = *values[0];
// check flag
if (not op_result.result) {
(*logger)("Keep tag failed",
/*fatal=*/true);
return;
}
// ensure commit exists, and fetch if needed
auto git_repo =
GitRepo::Open(git_cas); // link fake repo to odb
if (not git_repo) {
(*logger)(
fmt::format("Could not open repository {}",
repo_root.string()),
/*fatal=*/true);
return;
}
// setup wrapped logger
auto wrapped_logger =
std::make_shared<AsyncMapConsumerLogger>(
[logger](auto const& msg, bool fatal) {
(*logger)(
fmt::format("While getting subtree "
"from commit:\n{}",
msg),
fatal);
});
// get tree id and return workspace root
auto subtree = git_repo->GetSubtreeFromCommit(
repo_info.hash, repo_info.subdir, wrapped_logger);
if (not subtree) {
return;
}
// set the workspace root
(*ws_setter)(nlohmann::json::array(
{"git tree", *subtree, repo_root}));
},
[logger, target_path = repo_root](auto const& msg,
bool fatal) {
(*logger)(fmt::format("While running critical Git op "
"KEEP_TAG for target {}:\n{}",
target_path.string(),
msg),
fatal);
});
},
[logger, target_path = repo_root](auto const& msg, bool fatal) {
(*logger)(fmt::format("While running critical Git op "
"GET_BRANCH_REFNAME for target {}:\n{}",
target_path.string(),
msg),
fatal);
});
}
else {
// setup wrapped logger
auto wrapped_logger = std::make_shared<AsyncMapConsumerLogger>(
[logger](auto const& msg, bool fatal) {
(*logger)(
fmt::format("While getting subtree from commit:\n{}", msg),
fatal);
});
// get tree id and return workspace root
auto subtree = git_repo->GetSubtreeFromCommit(
repo_info.hash, repo_info.subdir, wrapped_logger);
if (not subtree) {
return;
}
// set the workspace root
(*ws_setter)(nlohmann::json::array({"git tree", *subtree, repo_root}));
}
}
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