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/** |
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* This file is part of the CernVM File System. |
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* |
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* This command processes a repository's catalog structure to detect and remove |
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* outdated and/or unneeded data objects. |
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*/ |
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#include "swissknife_list_reflog.h" |
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#include "manifest.h" |
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#include "object_fetcher.h" |
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#include "reflog.h" |
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#include "util/posix.h" |
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#include "util/string.h" |
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using namespace std; // NOLINT |
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namespace swissknife { |
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ParameterList CommandListReflog::GetParams() const { |
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ParameterList r; |
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r.push_back(Parameter::Mandatory('r', "repository url / local storage path")); |
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r.push_back(Parameter::Mandatory('n', "fully qualified repository name")); |
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r.push_back(Parameter::Optional('R', "path to reflog.chksum file")); |
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r.push_back(Parameter::Optional('k', "repository master key(s) / dir")); |
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r.push_back(Parameter::Optional('t', "temporary directory")); |
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r.push_back(Parameter::Optional('o', "output file")); |
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r.push_back(Parameter::Optional('@', "proxy url")); |
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return r; |
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} |
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int CommandListReflog::Main(const ArgumentList &args) { |
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const string &repo_url = *args.find('r')->second; |
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const string &repo_name = *args.find('n')->second; |
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const std::string &reflog_chksum_path = (args.count('R') > 0) |
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? *args.find('R')->second |
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: ""; |
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string repo_keys = (args.count('k') > 0) ? *args.find('k')->second : ""; |
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if (DirectoryExists(repo_keys)) |
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repo_keys = JoinStrings(FindFilesBySuffix(repo_keys, ".pub"), ":"); |
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const string temp_directory = (args.count('t') > 0) ? *args.find('t')->second |
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: "/tmp"; |
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const string output_path = (args.count('o') > 0) ? *args.find('o')->second |
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: ""; |
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shash::Any reflog_hash; |
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if (reflog_chksum_path != "") { |
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if (!manifest::Reflog::ReadChecksum(reflog_chksum_path, &reflog_hash)) { |
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LogCvmfs(kLogCvmfs, kLogStderr, "Could not read reflog checksum"); |
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return 1; |
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} |
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} |
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const bool follow_redirects = false; |
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const string proxy = (args.count('@') > 0) ? *args.find('@')->second : ""; |
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if (!this->InitDownloadManager(follow_redirects, proxy) |
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|| !this->InitSignatureManager(repo_keys)) { |
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LogCvmfs(kLogCvmfs, kLogStderr, "failed to init repo connection"); |
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return 1; |
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} |
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bool success; |
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if (IsHttpUrl(repo_url)) { |
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HttpObjectFetcher<> object_fetcher(repo_name, |
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repo_url, |
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temp_directory, |
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download_manager(), |
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signature_manager()); |
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if (reflog_hash.IsNull()) { |
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manifest::Manifest *manifest = NULL; |
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ObjectFetcherFailures::Failures failure; |
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switch (failure = object_fetcher.FetchManifest(&manifest)) { |
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case ObjectFetcherFailures::kFailOk: |
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reflog_hash = manifest->reflog_hash(); |
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break; |
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default: |
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LogCvmfs(kLogCvmfs, kLogStderr, "Failed to fetch manifest: %s", |
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Code2Ascii(failure)); |
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return 1; |
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} |
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delete manifest; |
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} |
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success = Run(&object_fetcher, repo_name, output_path, reflog_hash); |
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} else { |
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LocalObjectFetcher<> object_fetcher(repo_url, temp_directory); |
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success = Run(&object_fetcher, repo_name, output_path, reflog_hash); |
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} |
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return (success) ? 0 : 1; |
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} |
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template<class ObjectFetcherT> |
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bool CommandListReflog::Run(ObjectFetcherT *object_fetcher, string repo_name, |
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string output_path, shash::Any reflog_hash) { |
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typename ObjectFetcherT::ReflogTN *reflog; |
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reflog = FetchReflog(object_fetcher, repo_name, reflog_hash); |
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const shash::Any null_hash = shash::Any(reflog_hash.algorithm); |
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objects_.reset(new SmallHashDynamic<shash::Any, bool>); |
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objects_->Init(1024, null_hash, hasher); |
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// Traverse through catalogs and regular objects |
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vector<shash::Any> catalogs; |
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if (NULL == reflog || !reflog->List(SqlReflog::kRefCatalog, &catalogs)) { |
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LogCvmfs(kLogCvmfs, kLogStderr, "Failed to list catalog reference log"); |
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return false; |
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} |
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typename CatalogTraversal<ObjectFetcherT>::Parameters traversal_params; |
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traversal_params.object_fetcher = object_fetcher; |
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CatalogTraversal<ObjectFetcherT> traversal(traversal_params); |
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traversal.RegisterListener(&swissknife::CommandListReflog::CatalogCallback, |
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this); |
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bool success = true; |
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vector<shash::Any>::iterator i = catalogs.begin(); |
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const vector<shash::Any>::const_iterator iend = catalogs.end(); |
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for (; i != iend && success; i++) { |
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success &= traversal.TraverseRevision( |
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*i, CatalogTraversal<ObjectFetcherT>::kBreadthFirst); |
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} |
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if (!success) { |
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LogCvmfs(kLogCvmfs, kLogStderr, |
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"Catalog traversal aborted due to an error"); |
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return false; |
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} |
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// Add history, certificate, metainfo objects from reflog |
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vector<shash::Any> histories, certificates, metainfos; |
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if (!reflog->List(SqlReflog::kRefHistory, &histories)) { |
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LogCvmfs(kLogCvmfs, kLogStderr, |
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"Failed to fetch history objects from reflog"); |
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return false; |
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} |
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if (!reflog->List(SqlReflog::kRefCertificate, &certificates)) { |
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LogCvmfs(kLogCvmfs, kLogStderr, |
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"Failed to fetch certificate objects from reflog"); |
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return false; |
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} |
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if (!reflog->List(SqlReflog::kRefMetainfo, &metainfos)) { |
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LogCvmfs(kLogCvmfs, kLogStderr, |
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"Failed to fetch metainfo objects from reflog"); |
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return false; |
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} |
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InsertObjects(histories); |
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InsertObjects(certificates); |
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InsertObjects(metainfos); |
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// Clean up reflog file |
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delete reflog; |
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LogCvmfs(kLogCvmfs, kLogStderr, "Number of objects: %u", objects_->size()); |
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if (output_path == "") { |
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DumpObjects(stdout); |
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} else { |
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const int fd = open(output_path.c_str(), O_WRONLY | O_CREAT, 0644); |
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assert(fd); |
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FILE *stream = fdopen(fd, "w"); |
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DumpObjects(stream); |
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fclose(stream); // no need to call close after fclose |
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} |
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return success; |
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} |
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void CommandListReflog::CatalogCallback( |
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const CatalogTraversalData<catalog::Catalog> &data) { |
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LogCvmfs(kLogCvmfs, kLogStderr, "Processing catalog \"%s\"", |
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data.catalog->mountpoint().c_str()); |
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const catalog::Catalog::HashVector |
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&referenced_hashes = data.catalog->GetReferencedObjects(); |
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InsertObjects(referenced_hashes); |
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if (data.catalog->hash() != objects_->empty_key()) |
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objects_->Insert(data.catalog->hash(), true); |
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} |
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void CommandListReflog::InsertObjects(const vector<shash::Any> &list) { |
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vector<shash::Any>::const_iterator i = list.begin(); |
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const vector<shash::Any>::const_iterator iend = list.end(); |
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for (; i != iend; ++i) { |
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if ((*i) != objects_->empty_key()) |
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objects_->Insert(*i, true); |
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} |
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} |
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void CommandListReflog::DumpObjects(FILE *stream) { |
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const shash::Any empty_key = objects_->empty_key(); |
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shash::Any *hashes = objects_->keys(); |
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for (uint32_t i = 0; i < objects_->capacity(); ++i) { |
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if (hashes[i] != empty_key) { |
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fprintf(stream, "%s\n", hashes[i].ToString().c_str()); |
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} |
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} |
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} |
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} // namespace swissknife |
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