| Line |
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Source |
| 1 |
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/** |
| 2 |
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* This file is part of the CernVM File System. |
| 3 |
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*/ |
| 4 |
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| 5 |
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#ifndef CVMFS_PUBLISH_REPOSITORY_H_ |
| 6 |
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#define CVMFS_PUBLISH_REPOSITORY_H_ |
| 7 |
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| 8 |
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#include <string> |
| 9 |
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#include <vector> |
| 10 |
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| 11 |
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#include "gateway_util.h" |
| 12 |
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#include "history.h" // for History::Tag |
| 13 |
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#include "publish/settings.h" |
| 14 |
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#include "repository_util.h" |
| 15 |
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#include "upload_spooler_result.h" |
| 16 |
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#include "util/pointer.h" |
| 17 |
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#include "util/single_copy.h" |
| 18 |
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| 19 |
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namespace catalog { |
| 20 |
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class DeltaCounters; |
| 21 |
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class DirectoryEntry; |
| 22 |
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class SimpleCatalogManager; |
| 23 |
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class WritableCatalogManager; |
| 24 |
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} // namespace catalog |
| 25 |
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namespace download { |
| 26 |
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class DownloadManager; |
| 27 |
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} |
| 28 |
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namespace history { |
| 29 |
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class SqliteHistory; |
| 30 |
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} |
| 31 |
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namespace manifest { |
| 32 |
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class Manifest; |
| 33 |
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class Reflog; |
| 34 |
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} // namespace manifest |
| 35 |
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namespace perf { |
| 36 |
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class Statistics; |
| 37 |
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class StatisticsTemplate; |
| 38 |
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} // namespace perf |
| 39 |
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namespace signature { |
| 40 |
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class SignatureManager; |
| 41 |
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} |
| 42 |
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class SyncParameters; |
| 43 |
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namespace upload { |
| 44 |
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class Spooler; |
| 45 |
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} |
| 46 |
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namespace whitelist { |
| 47 |
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class Whitelist; |
| 48 |
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} |
| 49 |
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| 50 |
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namespace publish { |
| 51 |
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| 52 |
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class SyncMediator; |
| 53 |
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class SyncUnion; |
| 54 |
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| 55 |
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/** |
| 56 |
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* Users create derived instances to react on repository diffs |
| 57 |
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*/ |
| 58 |
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class __attribute__((visibility("default"))) DiffListener { |
| 59 |
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public: |
| 60 |
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✗ |
virtual ~DiffListener() { } |
| 61 |
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virtual void OnInit(const history::History::Tag &from_tag, |
| 62 |
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const history::History::Tag &to_tag) = 0; |
| 63 |
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virtual void OnStats(const catalog::DeltaCounters &delta) = 0; |
| 64 |
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virtual void OnAdd(const std::string &path, |
| 65 |
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const catalog::DirectoryEntry &entry) = 0; |
| 66 |
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virtual void OnRemove(const std::string &path, |
| 67 |
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const catalog::DirectoryEntry &entry) = 0; |
| 68 |
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virtual void OnModify(const std::string &path, |
| 69 |
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const catalog::DirectoryEntry &entry_from, |
| 70 |
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const catalog::DirectoryEntry &entry_to) = 0; |
| 71 |
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}; |
| 72 |
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| 73 |
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| 74 |
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class __attribute__((visibility("default"))) Env { |
| 75 |
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public: |
| 76 |
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/** |
| 77 |
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* Depending on the desired course of action, the permitted capabilities of |
| 78 |
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* the binary (cap_dac_read_search, cap_sys_admin) needs to be dropped or |
| 79 |
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* gained. Dropped for creating user namespaces in `enter`, gained for walking |
| 80 |
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* through overlayfs. |
| 81 |
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*/ |
| 82 |
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static void DropCapabilities(); |
| 83 |
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| 84 |
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/** |
| 85 |
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* If in an ephemeral writable shell, return the session directory. |
| 86 |
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* Otherwise return the empty string. |
| 87 |
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*/ |
| 88 |
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static std::string GetEnterSessionDir(); |
| 89 |
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}; |
| 90 |
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| 91 |
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| 92 |
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class __attribute__((visibility("default"))) Repository : SingleCopy { |
| 93 |
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public: |
| 94 |
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/** |
| 95 |
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* Tag names beginning with @ are interpreted as raw hashes |
| 96 |
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*/ |
| 97 |
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static const char kRawHashSymbol = '@'; |
| 98 |
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| 99 |
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static std::string GetFqrnFromUrl(const std::string &url); |
| 100 |
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| 101 |
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explicit Repository(const SettingsRepository &settings, |
| 102 |
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const bool exists = true); |
| 103 |
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virtual ~Repository(); |
| 104 |
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| 105 |
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void Check(); |
| 106 |
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void GarbageCollect(); |
| 107 |
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void List(); |
| 108 |
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| 109 |
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/** |
| 110 |
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* From and to are either tag names or catalog root hashes preceded by |
| 111 |
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* a '@'. |
| 112 |
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*/ |
| 113 |
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void Diff(const std::string &from, const std::string &to, |
| 114 |
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DiffListener *diff_listener); |
| 115 |
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| 116 |
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/** |
| 117 |
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* Checks whether the $url/.cvmfs_master_replica is available |
| 118 |
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*/ |
| 119 |
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bool IsMasterReplica(); |
| 120 |
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| 121 |
|
✗ |
const signature::SignatureManager *signature_mgr() const { |
| 122 |
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✗ |
return signature_mgr_; |
| 123 |
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} |
| 124 |
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✗ |
const whitelist::Whitelist *whitelist() const { return whitelist_; } |
| 125 |
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✗ |
const manifest::Manifest *manifest() const { return manifest_; } |
| 126 |
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// Inheritance of History and SqliteHistory unknown in the header |
| 127 |
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const history::History *history() const; |
| 128 |
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✗ |
std::string meta_info() const { return meta_info_; } |
| 129 |
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| 130 |
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protected: |
| 131 |
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void DownloadRootObjects(const std::string &url, |
| 132 |
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const std::string &fqrn, |
| 133 |
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const std::string &tmp_dir); |
| 134 |
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catalog::SimpleCatalogManager *GetSimpleCatalogManager(); |
| 135 |
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| 136 |
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const SettingsRepository settings_; |
| 137 |
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| 138 |
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perf::Statistics *statistics_; |
| 139 |
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signature::SignatureManager *signature_mgr_; |
| 140 |
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download::DownloadManager *download_mgr_; |
| 141 |
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/** |
| 142 |
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* The read-only catalog manager, loaded on demand |
| 143 |
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*/ |
| 144 |
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catalog::SimpleCatalogManager *simple_catalog_mgr_; |
| 145 |
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whitelist::Whitelist *whitelist_; |
| 146 |
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manifest::Reflog *reflog_; |
| 147 |
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manifest::Manifest *manifest_; |
| 148 |
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history::SqliteHistory *history_; |
| 149 |
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// TODO(jblomer): make MetaInfo class |
| 150 |
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std::string meta_info_; |
| 151 |
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}; |
| 152 |
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| 153 |
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class __attribute__((visibility("default"))) Publisher : public Repository { |
| 154 |
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public: |
| 155 |
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/** |
| 156 |
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* Encapsulates operations on a dedicated publisher |
| 157 |
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*/ |
| 158 |
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class ManagedNode { |
| 159 |
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public: |
| 160 |
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/** |
| 161 |
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* Collection of publisher failure states (see Check()) |
| 162 |
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*/ |
| 163 |
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enum EFailures { |
| 164 |
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kFailOk = 0, |
| 165 |
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kFailRdOnlyBroken = 0x01, |
| 166 |
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kFailRdOnlyOutdated = 0x02, |
| 167 |
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kFailRdOnlyWrongRevision = 0x04, |
| 168 |
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kFailUnionBroken = 0x08, |
| 169 |
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kFailUnionWritable = 0x10, |
| 170 |
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kFailUnionLocked = 0x20, |
| 171 |
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}; |
| 172 |
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| 173 |
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✗ |
explicit ManagedNode(Publisher *p) : publisher_(p) { } |
| 174 |
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/** |
| 175 |
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* Verifies the mountpoints and the transaction status. Returns a bit map |
| 176 |
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* of EFailures codes. |
| 177 |
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*/ |
| 178 |
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int Check(bool is_quiet = false); |
| 179 |
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/** |
| 180 |
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* Re-mount /cvmfs/$fqrn read-writable |
| 181 |
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*/ |
| 182 |
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void Open(); |
| 183 |
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/** |
| 184 |
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* Re-mount /cvmfs/$fqrn read-only |
| 185 |
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*/ |
| 186 |
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void Lock(); |
| 187 |
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/** |
| 188 |
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* Regular unmount of the read-write and the read-only layer and, if this |
| 189 |
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* does not work, a forced unmount |
| 190 |
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*/ |
| 191 |
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void Unmount(); |
| 192 |
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/** |
| 193 |
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* Mounts the read-only layer followed by the union layer |
| 194 |
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*/ |
| 195 |
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void Mount(); |
| 196 |
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/** |
| 197 |
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* Move scratch space to waste bin and clear it out asynchronously |
| 198 |
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*/ |
| 199 |
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void ClearScratch(); |
| 200 |
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| 201 |
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private: |
| 202 |
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/** |
| 203 |
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* Possible state transitions for the cvmfs read-only mountpoint and the |
| 204 |
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* union file system on /cvmfs/$fqrn |
| 205 |
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*/ |
| 206 |
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enum EMountpointAlterations { |
| 207 |
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kAlterUnionUnmount, |
| 208 |
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kAlterUnionLazyUnmount, |
| 209 |
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kAlterRdOnlyUnmount, |
| 210 |
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kAlterRdOnlyKillUnmount, |
| 211 |
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kAlterRdOnlyLazyUnmount, |
| 212 |
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kAlterUnionMount, |
| 213 |
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kAlterRdOnlyMount, |
| 214 |
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kAlterUnionOpen, |
| 215 |
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kAlterUnionLock, |
| 216 |
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kAlterScratchWipe, |
| 217 |
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}; |
| 218 |
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| 219 |
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void AlterMountpoint(EMountpointAlterations how, int log_level); |
| 220 |
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void SetRootHash(const shash::Any &hash); |
| 221 |
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| 222 |
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Publisher *publisher_; |
| 223 |
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}; // class ManagedNode |
| 224 |
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| 225 |
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| 226 |
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/** |
| 227 |
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* A session encapsulates an active storage (gateway) lease |
| 228 |
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*/ |
| 229 |
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class Session : ::SingleCopy { |
| 230 |
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public: |
| 231 |
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struct Settings { |
| 232 |
|
✗ |
Settings() : llvl(0) { } |
| 233 |
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std::string service_endpoint; |
| 234 |
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/** |
| 235 |
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* $fqrn/$lease_path |
| 236 |
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*/ |
| 237 |
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std::string repo_path; |
| 238 |
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std::string gw_key_path; |
| 239 |
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std::string token_path; |
| 240 |
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int llvl; |
| 241 |
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}; |
| 242 |
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| 243 |
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/** |
| 244 |
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* For non-gateway nodes, we have an implicit lease for the entire |
| 245 |
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* repository |
| 246 |
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*/ |
| 247 |
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Session() : keep_alive_(false), has_lease_(true) { } |
| 248 |
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explicit Session(const Settings &settings_session); |
| 249 |
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explicit Session(const SettingsPublisher &settings_publisher, int llvl = 0); |
| 250 |
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/** |
| 251 |
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* Drops the lease unless keep_alive_ is set |
| 252 |
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*/ |
| 253 |
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~Session(); |
| 254 |
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| 255 |
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void Acquire(); |
| 256 |
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void Drop(); |
| 257 |
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void SetKeepAlive(bool value); |
| 258 |
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|
| 259 |
|
✗ |
bool has_lease() const { return has_lease_; } |
| 260 |
|
✗ |
std::string token_path() const { return settings_.token_path; } |
| 261 |
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| 262 |
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private: |
| 263 |
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Settings settings_; |
| 264 |
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/** |
| 265 |
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* If set to true, the session is not closed on destruction, i.e. the |
| 266 |
|
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* lease is not dropped and the lease token is not removed. A newly created |
| 267 |
|
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* Session object will pick up an existing lease token and not re-acquire |
| 268 |
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* it. |
| 269 |
|
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*/ |
| 270 |
|
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bool keep_alive_; |
| 271 |
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bool has_lease_; |
| 272 |
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}; // class Session |
| 273 |
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| 274 |
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/** |
| 275 |
|
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* The directory layout of the publisher node must be of matching revision |
| 276 |
|
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*/ |
| 277 |
|
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static const unsigned kRequiredLayoutRevision = 143; |
| 278 |
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| 279 |
|
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static Publisher *Create(const SettingsPublisher &settings); |
| 280 |
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| 281 |
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explicit Publisher(const SettingsPublisher &settings, |
| 282 |
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const bool exists = true); |
| 283 |
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virtual ~Publisher(); |
| 284 |
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| 285 |
|
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void UpdateMetaInfo(); |
| 286 |
|
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void Transaction(); |
| 287 |
|
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void Abort(); |
| 288 |
|
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void Publish(); |
| 289 |
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void Ingest(); |
| 290 |
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void Sync(); |
| 291 |
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| 292 |
|
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/** |
| 293 |
|
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* Automatically exit the ephemeral shell after abort or commit. |
| 294 |
|
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* TODO(avalenzu): Most of the logic of the enter shell is in the CmdEnter UI |
| 295 |
|
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* class. We should move at least the core functionality to libcvmfs_server |
| 296 |
|
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* and this includes the ExitShell() method. |
| 297 |
|
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*/ |
| 298 |
|
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void ExitShell(); |
| 299 |
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| 300 |
|
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/** |
| 301 |
|
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* Must not edit magic tags 'trunk' and 'trunk-previous'. |
| 302 |
|
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* Removal of non-existing tags is silently ignored. The caller needs to |
| 303 |
|
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* ensure that the data provided in new tags makes sense. |
| 304 |
|
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*/ |
| 305 |
|
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void EditTags(const std::vector<history::History::Tag> &add_tags, |
| 306 |
|
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const std::vector<std::string> &rm_tags); |
| 307 |
|
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/** |
| 308 |
|
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* Create empty $url/.cvmfs_master_replica |
| 309 |
|
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*/ |
| 310 |
|
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void MarkReplicatible(bool value); |
| 311 |
|
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|
| 312 |
|
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void Rollback(); |
| 313 |
|
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void Resign(); |
| 314 |
|
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void Migrate(); |
| 315 |
|
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|
| 316 |
|
✗ |
const SettingsPublisher &settings() const { return settings_; } |
| 317 |
|
✗ |
const ServerFlagFile &in_transaction() const { return in_transaction_; } |
| 318 |
|
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const ServerLockFile &is_publishing() const { return is_publishing_; } |
| 319 |
|
✗ |
Session *session() const { return session_.weak_ref(); } |
| 320 |
|
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const upload::Spooler *spooler_files() const { return spooler_files_; } |
| 321 |
|
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const upload::Spooler *spooler_catalogs() const { return spooler_catalogs_; } |
| 322 |
|
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|
| 323 |
|
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private: |
| 324 |
|
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/** |
| 325 |
|
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* Used just before a spooler is required, e.g. in Create() |
| 326 |
|
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*/ |
| 327 |
|
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void ConstructSpoolers(); |
| 328 |
|
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/** |
| 329 |
|
|
* Initializes the spooler, the writable catalog manager, and the sync |
| 330 |
|
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* mediator |
| 331 |
|
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*/ |
| 332 |
|
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void ConstructSyncManagers(); |
| 333 |
|
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void WipeScratchArea(); |
| 334 |
|
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|
| 335 |
|
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void CreateKeychain(); |
| 336 |
|
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void CreateStorage(); |
| 337 |
|
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void CreateSpoolArea(); |
| 338 |
|
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void CreateRootObjects(); |
| 339 |
|
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|
| 340 |
|
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void ExportKeychain(); |
| 341 |
|
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void CreateDirectoryAsOwner(const std::string &path, int mode); |
| 342 |
|
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void InitSpoolArea(); |
| 343 |
|
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|
| 344 |
|
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void PushCertificate(); |
| 345 |
|
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void PushHistory(); |
| 346 |
|
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void PushManifest(); |
| 347 |
|
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void PushMetainfo(); |
| 348 |
|
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void PushReflog(); |
| 349 |
|
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void PushWhitelist(); |
| 350 |
|
|
|
| 351 |
|
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void OnProcessCertificate(const upload::SpoolerResult &result); |
| 352 |
|
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void OnProcessHistory(const upload::SpoolerResult &result); |
| 353 |
|
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void OnProcessMetainfo(const upload::SpoolerResult &result); |
| 354 |
|
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void OnUploadManifest(const upload::SpoolerResult &result); |
| 355 |
|
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void OnUploadReflog(const upload::SpoolerResult &result); |
| 356 |
|
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void OnUploadWhitelist(const upload::SpoolerResult &result); |
| 357 |
|
|
|
| 358 |
|
|
void CheckTagName(const std::string &name); |
| 359 |
|
|
|
| 360 |
|
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void TransactionRetry(); |
| 361 |
|
|
void TransactionImpl(bool waiting_on_lease = false); |
| 362 |
|
|
|
| 363 |
|
|
SettingsPublisher settings_; |
| 364 |
|
|
UniquePtr<perf::StatisticsTemplate> statistics_publish_; |
| 365 |
|
|
/** |
| 366 |
|
|
* The log level, set to kLogNone if settings_.is_silent() == true |
| 367 |
|
|
*/ |
| 368 |
|
|
int llvl_; |
| 369 |
|
|
ServerFlagFile in_transaction_; |
| 370 |
|
|
ServerLockFile is_publishing_; |
| 371 |
|
|
gateway::GatewayKey gw_key_; |
| 372 |
|
|
/** |
| 373 |
|
|
* Only really used gateway mode when a transaction is opened. The session |
| 374 |
|
|
* takes an existing session token if it exists and drops the lease in abort. |
| 375 |
|
|
* TODO(jblomer): that is not yet done. Once publish, tag, etc. are |
| 376 |
|
|
* implemented, the lease should be dropped after the last successful write |
| 377 |
|
|
* operation. |
| 378 |
|
|
*/ |
| 379 |
|
|
UniquePtr<Session> session_; |
| 380 |
|
|
UniquePtr<ManagedNode> managed_node_; |
| 381 |
|
|
|
| 382 |
|
|
upload::Spooler *spooler_files_; |
| 383 |
|
|
upload::Spooler *spooler_catalogs_; |
| 384 |
|
|
catalog::WritableCatalogManager *catalog_mgr_; |
| 385 |
|
|
SyncParameters *sync_parameters_; |
| 386 |
|
|
SyncMediator *sync_mediator_; |
| 387 |
|
|
publish::SyncUnion *sync_union_; |
| 388 |
|
|
}; |
| 389 |
|
|
|
| 390 |
|
|
class __attribute__((visibility("default"))) Replica : public Repository { |
| 391 |
|
|
public: |
| 392 |
|
|
static Replica *Create(); |
| 393 |
|
|
explicit Replica(const SettingsReplica &settings); |
| 394 |
|
|
virtual ~Replica(); |
| 395 |
|
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| 396 |
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void Snapshot(); |
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}; |
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| 399 |
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} // namespace publish |
| 400 |
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| 401 |
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#endif // CVMFS_PUBLISH_REPOSITORY_H_ |
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