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#58: introduce ResolveMapCache and trigger force cook on RPK change
* allowing the pldAssign params to have values other than in the dropdowns (easier to debug the values when the RPK changes) * the RPK change detection can be triggered by toggling a pldAssign parameter or by clicking on the parameter dropdowns of start rule, style or rule file.
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#pragma once | ||
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constexpr const char* OP_PLD_ASSIGN = "pldAssign"; | ||
constexpr const char* OP_PLD_GENERATE = "pldGenerate"; |
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// | ||
// Created by shaegler on 3/3/18. | ||
// | ||
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#include "ResolveMapCache.h" | ||
#include "LogHandler.h" | ||
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namespace { | ||
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const ResolveMapUPtr RESOLVE_MAP_NONE; | ||
const timespec NO_MODIFICATION_TIME{0, 0}; | ||
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timespec getFileModificationTime(const boost::filesystem::path& p) { | ||
struct stat result; | ||
if (stat(p.c_str(), &result) == 0) { | ||
return result.st_mtim; | ||
} | ||
else | ||
return NO_MODIFICATION_TIME; | ||
} | ||
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} // namespace | ||
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ResolveMapCache::~ResolveMapCache() { | ||
boost::filesystem::remove_all(mRPKUnpackPath); | ||
LOG_INF << "Removed RPK unpack directory"; | ||
} | ||
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ResolveMapCache::LookupResult ResolveMapCache::get(const boost::filesystem::path& rpk) { | ||
if (rpk.empty()) | ||
return { RESOLVE_MAP_NONE, CacheStatus::MISS }; | ||
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if (!boost::filesystem::exists(rpk)) | ||
return { RESOLVE_MAP_NONE, CacheStatus::MISS }; | ||
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const auto timeStamp = getFileModificationTime(rpk); | ||
LOG_DBG << "rpk: current timestamp: " << timeStamp.tv_sec << "s " << timeStamp.tv_nsec << "ns"; | ||
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CacheStatus cs = CacheStatus::HIT; | ||
auto it = mCache.find(rpk); | ||
if (it != mCache.end()) { | ||
LOG_DBG << "rpk: cache timestamp: " << it->second.mTimeStamp.tv_sec << "s " << it->second.mTimeStamp.tv_nsec << "ns"; | ||
if (it->second.mTimeStamp.tv_sec != timeStamp.tv_sec || it->second.mTimeStamp.tv_nsec != timeStamp.tv_nsec) { | ||
mCache.erase(it); | ||
const auto cnt = boost::filesystem::remove_all(mRPKUnpackPath / rpk.leaf()); | ||
LOG_INF << "RPK change detected, forcing reload and clearing cache for " << rpk << " (removed " << cnt << " files)"; | ||
cs = CacheStatus::MISS; | ||
} | ||
} | ||
else | ||
cs = CacheStatus::MISS; | ||
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if (cs == CacheStatus::MISS) { | ||
const auto rpkURI = toFileURI(rpk); | ||
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ResolveMapCacheEntry rmce; | ||
rmce.mTimeStamp = timeStamp; | ||
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prt::Status status = prt::STATUS_UNSPECIFIED_ERROR; | ||
rmce.mResolveMap.reset(prt::createResolveMap(rpkURI.c_str(), mRPKUnpackPath.wstring().c_str(), &status)); | ||
if (status != prt::STATUS_OK) | ||
return { RESOLVE_MAP_NONE, CacheStatus::MISS }; | ||
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it = mCache.emplace(rpk, std::move(rmce)).first; | ||
LOG_INF << "Upacked RPK " << rpk << " to " << mRPKUnpackPath; | ||
} | ||
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return { it->second.mResolveMap, cs }; | ||
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} | ||
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#pragma once | ||
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#include "Utils.h" | ||
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#include "boost/filesystem.hpp" | ||
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#include <sys/types.h> | ||
#include <sys/stat.h> | ||
#ifndef WIN32 | ||
# include <unistd.h> | ||
#endif | ||
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class ResolveMapCache { | ||
public: | ||
ResolveMapCache(const boost::filesystem::path& unpackPath) : mRPKUnpackPath{unpackPath} { } | ||
ResolveMapCache(const ResolveMapCache&) = delete; | ||
ResolveMapCache(ResolveMapCache&&) = delete; | ||
ResolveMapCache& operator=(ResolveMapCache&) = delete; | ||
~ResolveMapCache(); | ||
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enum class CacheStatus { HIT, MISS }; | ||
using LookupResult = std::pair<const ResolveMapUPtr&, CacheStatus>; | ||
LookupResult get(const boost::filesystem::path& rpk); | ||
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private: | ||
struct ResolveMapCacheEntry { | ||
ResolveMapUPtr mResolveMap; | ||
timespec mTimeStamp; | ||
}; | ||
using Cache = std::map<boost::filesystem::path, ResolveMapCacheEntry>; | ||
Cache mCache; | ||
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const boost::filesystem::path mRPKUnpackPath; | ||
}; | ||
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using ResolveMapCacheUPtr = std::unique_ptr<ResolveMapCache>; |
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