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Build break fixes

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Summary: Regex support for c++ is very inconsistent across compilers, converting
the logic to simple string manipulation.

Test Plan: Local test

Subscribers: andrewkr, dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D61377
This commit is contained in:
krad 2016-08-01 16:55:01 -07:00
parent 0155c73dee
commit 712dd27e67
1 changed files with 23 additions and 17 deletions
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40
utilities/persistent_cache/block_cache_tier.cc
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@ -66,6 +66,19 @@ Status BlockCacheTier::Open() {
return Status::OK();
}
bool IsCacheFile(const std::string& file) {
// check if the file has .rc suffix
// Unfortunately regex support across compilers is not even, so we use simple
// string parsing
size_t pos = file.find(".");
if (pos == std::string::npos) {
return false;
}
std::string suffix = file.substr(pos);
return suffix == ".rc";
}
Status BlockCacheTier::CleanupCacheFolder(const std::string& folder) {
std::vector<std::string> files;
Status status = opt_.env->GetChildren(folder, &files);
@ -77,24 +90,17 @@ Status BlockCacheTier::CleanupCacheFolder(const std::string& folder) {
// cleanup files with the patter :digi:.rc
for (auto file : files) {
try {
const std::regex cache_file_regex("(0-9)+\\.rc$");
if (std::regex_match(file, cache_file_regex)) {
// cache file
Info(opt_.log, "Removing file %s.", file.c_str());
status = opt_.env->DeleteFile(folder + "/" + file);
if (!status.ok()) {
Error(opt_.log, "Error deleting file %s. %s", file.c_str(),
status.ToString().c_str());
return Status::IOError("Error deleting file " + file);
}
} else {
Info(opt_.log, "Skipping file %s.", file.c_str());
if (IsCacheFile(file)) {
// cache file
Info(opt_.log, "Removing file %s.", file.c_str());
status = opt_.env->DeleteFile(folder + "/" + file);
if (!status.ok()) {
Error(opt_.log, "Error deleting file %s. %s", file.c_str(),
status.ToString().c_str());
return status;
}
} catch (const std::regex_error& e) {
// Since std library is evolving, you can potentially get an exception for
// certain older compiler version. It is safer to exit cleanly.
return Status::IOError(e.what());
} else {
Debug(opt_.log, "Skipping file %s", file.c_str());
}
}
return Status::OK();