131 lines
5.2 KiB
C++
131 lines
5.2 KiB
C++
#include "./buildactionprivate.h"
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#include "./subprocess.h"
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#include "../serversetup.h"
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#include <c++utilities/io/ansiescapecodes.h>
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#include <boost/process/search_path.hpp>
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#include <boost/process/start_dir.hpp>
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using namespace std;
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using namespace CppUtilities;
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using namespace CppUtilities::EscapeCodes;
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namespace LibRepoMgr {
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CustomCommand::CustomCommand(ServiceSetup &setup, const std::shared_ptr<BuildAction> &buildAction)
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: InternalBuildAction(setup, buildAction)
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, m_command(nullptr)
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{
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}
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void CustomCommand::run()
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{
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// validate and read parameter/settings
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if (auto error = validateParameter(RequiredDatabases::None, RequiredParameters::None); !error.empty()) {
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reportError(move(error));
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return;
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}
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if (m_buildAction->directory.empty()) {
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reportError("No directory specified.");
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return;
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}
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auto &metaInfo = m_setup.building.metaInfo;
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auto metaInfoLock = metaInfo.lockToRead();
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const auto &typeInfo = metaInfo.typeInfoForId(BuildActionType::CustomCommand);
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const auto commandSetting = typeInfo.settings[static_cast<std::size_t>(CustomCommandSettings::Command)].param;
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const auto sharedLocksSetting = typeInfo.settings[static_cast<std::size_t>(CustomCommandSettings::SharedLocks)].param;
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const auto exclusiveLocksSetting = typeInfo.settings[static_cast<std::size_t>(CustomCommandSettings::ExclusiveLocks)].param;
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metaInfoLock.unlock();
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const auto &command = findSetting(commandSetting);
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if (command.empty()) {
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reportError("No command specified.");
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return;
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}
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// prepare working dir
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try {
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m_workingDirectory = determineWorkingDirectory(customCommandsWorkingDirectory);
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if (!std::filesystem::is_directory(m_workingDirectory)) {
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std::filesystem::create_directories(m_workingDirectory);
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}
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} catch (const std::filesystem::filesystem_error &e) {
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reportError(argsToString("Unable to create working directory: ", e.what()));
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return;
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}
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m_buildAction->appendOutput(Phrases::InfoMessage, "Running custom command: ", command, '\n');
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// prepare process and finish handler
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m_command = &command;
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m_process = m_buildAction->makeBuildProcess("command", m_workingDirectory + "/the.log", [this](boost::process::child &&, ProcessResult &&result) {
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if (result.errorCode) {
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m_buildAction->appendOutput(Phrases::InfoMessage, "Unable to invoke command: ", result.errorCode.message());
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reportError(result.errorCode.message());
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return;
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}
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m_buildAction->appendOutput(
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result.exitCode == 0 ? Phrases::InfoMessage : Phrases::ErrorMessage, "Command exited with return code ", result.exitCode);
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if (result.exitCode != 0) {
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reportError(argsToString("non-zero exit code ", result.exitCode));
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return;
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}
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const auto buildLock = m_setup.building.lockToWrite();
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reportSuccess();
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});
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// acquire locks
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// note: Using an std::set here (instead of a std::vector) to ensure we don't attempt to acquire the same lock twice and to ensure
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// locks are always acquired in the same order (to prevent deadlocks).
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m_sharedLockNames = splitStringSimple<std::set<std::string_view>>(findSetting(sharedLocksSetting), ",");
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m_sharedLockNamesIterator = m_sharedLockNames.begin();
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m_exclusiveLockNames = splitStringSimple<std::set<std::string_view>>(findSetting(exclusiveLocksSetting), ",");
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m_exclusiveLockNamesIterator = m_exclusiveLockNames.begin();
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m_process->locks().reserve(m_sharedLockNames.size() + m_exclusiveLockNames.size());
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acquireNextSharedLock();
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}
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void LibRepoMgr::CustomCommand::acquireNextSharedLock()
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{
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if (m_sharedLockNamesIterator == m_sharedLockNames.end()) {
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// continue acquiring exclusive locks once all shared locks are acquired
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acquireNextExclusiveLock();
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return;
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}
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if (m_sharedLockNamesIterator->empty()) {
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++m_sharedLockNamesIterator;
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acquireNextSharedLock();
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return;
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}
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m_setup.locks.acquireToRead(
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m_buildAction->log(), std::string(*m_sharedLockNamesIterator), [this, buildAction = m_buildAction](SharedLoggingLock &&lock) {
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m_process->locks().emplace_back(std::move(lock));
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++m_sharedLockNamesIterator;
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acquireNextSharedLock();
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});
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}
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void LibRepoMgr::CustomCommand::acquireNextExclusiveLock()
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{
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if (m_exclusiveLockNamesIterator == m_exclusiveLockNames.end()) {
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// execute process once all locks are acquired
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m_process->launch(boost::process::start_dir(m_workingDirectory), boost::process::search_path("bash"), "-ec", *m_command);
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m_process.reset();
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return;
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}
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if (m_exclusiveLockNamesIterator->empty()) {
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++m_exclusiveLockNamesIterator;
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acquireNextExclusiveLock();
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return;
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}
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m_setup.locks.acquireToWrite(
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m_buildAction->log(), std::string(*m_exclusiveLockNamesIterator), [this, buildAction = m_buildAction](UniqueLoggingLock &&lock) {
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m_process->locks().emplace_back(std::move(lock));
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++m_exclusiveLockNamesIterator;
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acquireNextExclusiveLock();
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});
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}
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} // namespace LibRepoMgr
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