1 files changed, 422 insertions, 0 deletions
diff --git a/src/rgw/driver/immutable_config/store.cc b/src/rgw/driver/immutable_config/store.cc
new file mode 100644
index 000000000..8d3e0765f
--- /dev/null
+++ b/src/rgw/driver/immutable_config/store.cc
@@ -0,0 +1,422 @@
+// vim: ts=8 sw=2 smarttab ft=cpp
+
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2022 Red Hat, Inc.
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation. See file COPYING.
+ *
+ */
+
+#include "rgw_zone.h"
+#include "store.h"
+
+namespace rgw::sal {
+
+ImmutableConfigStore::ImmutableConfigStore(const RGWZoneGroup& zonegroup,
+                                           const RGWZoneParams& zone,
+                                           const RGWPeriodConfig& period_config)
+    : zonegroup(zonegroup), zone(zone), period_config(period_config)
+{
+}
+
+// Realm
+int ImmutableConfigStore::write_default_realm_id(const DoutPrefixProvider* dpp,
+                                                 optional_yield y, bool exclusive,
+                                                 std::string_view realm_id)
+{
+  return -EROFS;
+}
+
+int ImmutableConfigStore::read_default_realm_id(const DoutPrefixProvider* dpp,
+                                                optional_yield y,
+                                                std::string& realm_id)
+{
+  return -ENOENT;
+}
+
+int ImmutableConfigStore::delete_default_realm_id(const DoutPrefixProvider* dpp,
+                                                  optional_yield y)
+{
+  return -EROFS;
+}
+
+
+int ImmutableConfigStore::create_realm(const DoutPrefixProvider* dpp,
+                                       optional_yield y, bool exclusive,
+                                       const RGWRealm& info,
+                                       std::unique_ptr<RealmWriter>* writer)
+{
+  return -EROFS;
+}
+
+int ImmutableConfigStore::read_realm_by_id(const DoutPrefixProvider* dpp,
+                                           optional_yield y,
+                                           std::string_view realm_id,
+                                           RGWRealm& info,
+                                           std::unique_ptr<RealmWriter>* writer)
+{
+  return -ENOENT;
+}
+
+int ImmutableConfigStore::read_realm_by_name(const DoutPrefixProvider* dpp,
+                                             optional_yield y,
+                                             std::string_view realm_name,
+                                             RGWRealm& info,
+                                             std::unique_ptr<RealmWriter>* writer)
+{
+  return -ENOENT;
+}
+
+int ImmutableConfigStore::read_default_realm(const DoutPrefixProvider* dpp,
+                                             optional_yield y,
+                                             RGWRealm& info,
+                                             std::unique_ptr<RealmWriter>* writer)
+{
+  return -ENOENT;
+}
+
+int ImmutableConfigStore::read_realm_id(const DoutPrefixProvider* dpp,
+                                        optional_yield y, std::string_view realm_name,
+                                        std::string& realm_id)
+{
+  return -ENOENT;
+}
+
+int ImmutableConfigStore::realm_notify_new_period(const DoutPrefixProvider* dpp,
+                                                  optional_yield y,
+                                                  const RGWPeriod& period)
+{
+  return -ENOTSUP;
+}
+
+int ImmutableConfigStore::list_realm_names(const DoutPrefixProvider* dpp,
+                                           optional_yield y, const std::string& marker,
+                                           std::span<std::string> entries,
+                                           ListResult<std::string>& result)
+{
+  result.next.clear();
+  result.entries = entries.first(0);
+  return 0;
+}
+
+
+// Period
+int ImmutableConfigStore::create_period(const DoutPrefixProvider* dpp,
+                                        optional_yield y, bool exclusive,
+                                        const RGWPeriod& info)
+{
+  return -EROFS;
+}
+
+int ImmutableConfigStore::read_period(const DoutPrefixProvider* dpp,
+                                      optional_yield y, std::string_view period_id,
+                                      std::optional<uint32_t> epoch, RGWPeriod& info)
+{
+  return -ENOENT;
+}
+
+int ImmutableConfigStore::delete_period(const DoutPrefixProvider* dpp,
+                                        optional_yield y,
+                                        std::string_view period_id)
+{
+  return -EROFS;
+}
+
+int ImmutableConfigStore::list_period_ids(const DoutPrefixProvider* dpp,
+                                          optional_yield y, const std::string& marker,
+                                          std::span<std::string> entries,
+                                          ListResult<std::string>& result)
+{
+  result.next.clear();
+  result.entries = entries.first(0);
+  return 0;
+}
+
+
+// ZoneGroup
+
+class ImmutableZoneGroupWriter : public ZoneGroupWriter {
+ public:
+  int write(const DoutPrefixProvider* dpp, optional_yield y,
+            const RGWZoneGroup& info) override
+  {
+    return -EROFS;
+  }
+  int rename(const DoutPrefixProvider* dpp, optional_yield y,
+             RGWZoneGroup& info, std::string_view new_name) override
+  {
+    return -EROFS;
+  }
+  int remove(const DoutPrefixProvider* dpp, optional_yield y) override
+  {
+    return -EROFS;
+  }
+};
+
+int ImmutableConfigStore::write_default_zonegroup_id(const DoutPrefixProvider* dpp,
+                                                     optional_yield y, bool exclusive,
+                                                     std::string_view realm_id,
+                                                     std::string_view zonegroup_id)
+{
+  return -EROFS;
+}
+
+int ImmutableConfigStore::read_default_zonegroup_id(const DoutPrefixProvider* dpp,
+                                                    optional_yield y,
+                                                    std::string_view realm_id,
+                                                    std::string& zonegroup_id)
+{
+  if (!realm_id.empty()) {
+    return -ENOENT;
+  }
+  zonegroup_id = zonegroup.id;
+  return 0;
+}
+
+int ImmutableConfigStore::delete_default_zonegroup_id(const DoutPrefixProvider* dpp,
+                                                      optional_yield y,
+                                                      std::string_view realm_id)
+{
+  return -EROFS;
+}
+
+
+int ImmutableConfigStore::create_zonegroup(const DoutPrefixProvider* dpp,
+                                           optional_yield y, bool exclusive,
+                                           const RGWZoneGroup& info,
+                                           std::unique_ptr<ZoneGroupWriter>* writer)
+{
+  return -EROFS;
+}
+
+int ImmutableConfigStore::read_zonegroup_by_id(const DoutPrefixProvider* dpp,
+                                               optional_yield y,
+                                               std::string_view zonegroup_id,
+                                               RGWZoneGroup& info,
+                                               std::unique_ptr<ZoneGroupWriter>* writer)
+{
+  if (zonegroup_id != zonegroup.id) {
+    return -ENOENT;
+  }
+
+  info = zonegroup;
+
+  if (writer) {
+    *writer = std::make_unique<ImmutableZoneGroupWriter>();
+  }
+  return 0;
+}
+int ImmutableConfigStore::read_zonegroup_by_name(const DoutPrefixProvider* dpp,
+                                                 optional_yield y,
+                                                 std::string_view zonegroup_name,
+                                                 RGWZoneGroup& info,
+                                                 std::unique_ptr<ZoneGroupWriter>* writer)
+{
+  if (zonegroup_name != zonegroup.name) {
+    return -ENOENT;
+  }
+
+  info = zonegroup;
+
+  if (writer) {
+    *writer = std::make_unique<ImmutableZoneGroupWriter>();
+  }
+  return 0;
+}
+
+int ImmutableConfigStore::read_default_zonegroup(const DoutPrefixProvider* dpp,
+                                                 optional_yield y,
+                                                 std::string_view realm_id,
+                                                 RGWZoneGroup& info,
+                                                 std::unique_ptr<ZoneGroupWriter>* writer)
+{
+  info = zonegroup;
+
+  if (writer) {
+    *writer = std::make_unique<ImmutableZoneGroupWriter>();
+  }
+  return 0;
+}
+
+int ImmutableConfigStore::list_zonegroup_names(const DoutPrefixProvider* dpp,
+                                               optional_yield y, const std::string& marker,
+                                               std::span<std::string> entries,
+                                               ListResult<std::string>& result)
+{
+  if (marker < zonegroup.name) {
+    entries[0] = zonegroup.name;
+    result.next = zonegroup.name;
+    result.entries = entries.first(1);
+  } else {
+    result.next.clear();
+    result.entries = entries.first(0);
+  }
+  return 0;
+}
+
+// Zone
+
+class ImmutableZoneWriter : public ZoneWriter {
+ public:
+  int write(const DoutPrefixProvider* dpp, optional_yield y,
+            const RGWZoneParams& info) override
+  {
+    return -EROFS;
+  }
+  int rename(const DoutPrefixProvider* dpp, optional_yield y,
+             RGWZoneParams& info, std::string_view new_name) override
+  {
+    return -EROFS;
+  }
+  int remove(const DoutPrefixProvider* dpp, optional_yield y) override
+  {
+    return -EROFS;
+  }
+};
+
+int ImmutableConfigStore::write_default_zone_id(const DoutPrefixProvider* dpp,
+                                                optional_yield y, bool exclusive,
+                                                std::string_view realm_id,
+                                                std::string_view zone_id)
+{
+  return -EROFS;
+}
+
+int ImmutableConfigStore::read_default_zone_id(const DoutPrefixProvider* dpp,
+                                               optional_yield y,
+                                               std::string_view realm_id,
+                                               std::string& zone_id)
+{
+  if (realm_id.empty()) {
+    return -ENOENT;
+  }
+  zone_id = zone.id;
+  return 0;
+}
+
+int ImmutableConfigStore::delete_default_zone_id(const DoutPrefixProvider* dpp,
+                                                 optional_yield y,
+                                                 std::string_view realm_id)
+{
+  return -EROFS;
+}
+
+
+int ImmutableConfigStore::create_zone(const DoutPrefixProvider* dpp,
+                                      optional_yield y, bool exclusive,
+                                      const RGWZoneParams& info,
+                                      std::unique_ptr<ZoneWriter>* writer)
+{
+  return -EROFS;
+}
+
+int ImmutableConfigStore::read_zone_by_id(const DoutPrefixProvider* dpp,
+                                          optional_yield y,
+                                          std::string_view zone_id,
+                                          RGWZoneParams& info,
+                                          std::unique_ptr<ZoneWriter>* writer)
+{
+  if (zone_id != zone.id) {
+    return -ENOENT;
+  }
+
+  info = zone;
+
+  if (writer) {
+    *writer = std::make_unique<ImmutableZoneWriter>();
+  }
+  return 0;
+}
+
+int ImmutableConfigStore::read_zone_by_name(const DoutPrefixProvider* dpp,
+                                            optional_yield y,
+                                            std::string_view zone_name,
+                                            RGWZoneParams& info,
+                                            std::unique_ptr<ZoneWriter>* writer)
+{
+  if (zone_name != zone.name) {
+    return -ENOENT;
+  }
+
+  info = zone;
+
+  if (writer) {
+    *writer = std::make_unique<ImmutableZoneWriter>();
+  }
+  return 0;
+}
+
+int ImmutableConfigStore::read_default_zone(const DoutPrefixProvider* dpp,
+                                            optional_yield y,
+                                            std::string_view realm_id,
+                                            RGWZoneParams& info,
+                                            std::unique_ptr<ZoneWriter>* writer)
+{
+  if (!realm_id.empty()) {
+    return -ENOENT;
+  }
+
+  info = zone;
+
+  if (writer) {
+    *writer = std::make_unique<ImmutableZoneWriter>();
+  }
+  return 0;
+}
+
+int ImmutableConfigStore::list_zone_names(const DoutPrefixProvider* dpp,
+                                          optional_yield y, const std::string& marker,
+                                          std::span<std::string> entries,
+                                          ListResult<std::string>& result)
+{
+  if (marker < zone.name) {
+    entries[0] = zone.name;
+    result.next = zone.name;
+    result.entries = entries.first(1);
+  } else {
+    result.next.clear();
+    result.entries = entries.first(0);
+  }
+  return 0;
+}
+
+
+// PeriodConfig
+int ImmutableConfigStore::read_period_config(const DoutPrefixProvider* dpp,
+                                             optional_yield y,
+                                             std::string_view realm_id,
+                                             RGWPeriodConfig& info)
+{
+  if (!realm_id.empty()) {
+    return -ENOENT;
+  }
+
+  info = period_config;
+  return 0;
+}
+
+int ImmutableConfigStore::write_period_config(const DoutPrefixProvider* dpp,
+                                              optional_yield y, bool exclusive,
+                                              std::string_view realm_id,
+                                              const RGWPeriodConfig& info)
+{
+  return -EROFS;
+}
+
+
+/// ImmutableConfigStore factory function
+auto create_immutable_config_store(const DoutPrefixProvider* dpp,
+                                   const RGWZoneGroup& zonegroup,
+                                   const RGWZoneParams& zone,
+                                   const RGWPeriodConfig& period_config)
+  -> std::unique_ptr<ConfigStore>
+{
+  return std::make_unique<ImmutableConfigStore>(zonegroup, zone, period_config);
+}
+
+} // namespace rgw::sal