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#58: introduce ResolveMapCache and trigger force cook on RPK change
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,4 @@ | ||
| #pragma once | ||
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| constexpr const char* OP_PLD_ASSIGN = "pldAssign"; | ||
| constexpr const char* OP_PLD_GENERATE = "pldGenerate"; |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,73 @@ | ||
| // | ||
| // 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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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,37 @@ | ||
| #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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