diff options
Diffstat (limited to 'src/rgw/rgw_pubsub.cc')
| -rw-r--r-- | src/rgw/rgw_pubsub.cc | 990 |
1 files changed, 990 insertions, 0 deletions
diff --git a/src/rgw/rgw_pubsub.cc b/src/rgw/rgw_pubsub.cc new file mode 100644 index 000000000..8a6341e6e --- /dev/null +++ b/src/rgw/rgw_pubsub.cc @@ -0,0 +1,990 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab ft=cpp + +#include "services/svc_zone.h" +#include "rgw_b64.h" +#include "rgw_sal.h" +#include "rgw_sal_rados.h" +#include "rgw_pubsub.h" +#include "rgw_tools.h" +#include "rgw_xml.h" +#include "rgw_arn.h" +#include "rgw_pubsub_push.h" +#include <regex> +#include <algorithm> + +#define dout_subsys ceph_subsys_rgw + +void set_event_id(std::string& id, const std::string& hash, const utime_t& ts) { + char buf[64]; + const auto len = snprintf(buf, sizeof(buf), "%010ld.%06ld.%s", (long)ts.sec(), (long)ts.usec(), hash.c_str()); + if (len > 0) { + id.assign(buf, len); + } +} + +bool rgw_s3_key_filter::decode_xml(XMLObj* obj) { + XMLObjIter iter = obj->find("FilterRule"); + XMLObj *o; + + const auto throw_if_missing = true; + auto prefix_not_set = true; + auto suffix_not_set = true; + auto regex_not_set = true; + std::string name; + + while ((o = iter.get_next())) { + RGWXMLDecoder::decode_xml("Name", name, o, throw_if_missing); + if (name == "prefix" && prefix_not_set) { + prefix_not_set = false; + RGWXMLDecoder::decode_xml("Value", prefix_rule, o, throw_if_missing); + } else if (name == "suffix" && suffix_not_set) { + suffix_not_set = false; + RGWXMLDecoder::decode_xml("Value", suffix_rule, o, throw_if_missing); + } else if (name == "regex" && regex_not_set) { + regex_not_set = false; + RGWXMLDecoder::decode_xml("Value", regex_rule, o, throw_if_missing); + } else { + throw RGWXMLDecoder::err("invalid/duplicate S3Key filter rule name: '" + name + "'"); + } + } + return true; +} + +void rgw_s3_key_filter::dump_xml(Formatter *f) const { + if (!prefix_rule.empty()) { + f->open_object_section("FilterRule"); + ::encode_xml("Name", "prefix", f); + ::encode_xml("Value", prefix_rule, f); + f->close_section(); + } + if (!suffix_rule.empty()) { + f->open_object_section("FilterRule"); + ::encode_xml("Name", "suffix", f); + ::encode_xml("Value", suffix_rule, f); + f->close_section(); + } + if (!regex_rule.empty()) { + f->open_object_section("FilterRule"); + ::encode_xml("Name", "regex", f); + ::encode_xml("Value", regex_rule, f); + f->close_section(); + } +} + +bool rgw_s3_key_filter::has_content() const { + return !(prefix_rule.empty() && suffix_rule.empty() && regex_rule.empty()); +} + +bool rgw_s3_key_value_filter::decode_xml(XMLObj* obj) { + kv.clear(); + XMLObjIter iter = obj->find("FilterRule"); + XMLObj *o; + + const auto throw_if_missing = true; + + std::string key; + std::string value; + + while ((o = iter.get_next())) { + RGWXMLDecoder::decode_xml("Name", key, o, throw_if_missing); + RGWXMLDecoder::decode_xml("Value", value, o, throw_if_missing); + kv.emplace(key, value); + } + return true; +} + +void rgw_s3_key_value_filter::dump_xml(Formatter *f) const { + for (const auto& key_value : kv) { + f->open_object_section("FilterRule"); + ::encode_xml("Name", key_value.first, f); + ::encode_xml("Value", key_value.second, f); + f->close_section(); + } +} + +bool rgw_s3_key_value_filter::has_content() const { + return !kv.empty(); +} + +bool rgw_s3_filter::decode_xml(XMLObj* obj) { + RGWXMLDecoder::decode_xml("S3Key", key_filter, obj); + RGWXMLDecoder::decode_xml("S3Metadata", metadata_filter, obj); + RGWXMLDecoder::decode_xml("S3Tags", tag_filter, obj); + return true; +} + +void rgw_s3_filter::dump_xml(Formatter *f) const { + if (key_filter.has_content()) { + ::encode_xml("S3Key", key_filter, f); + } + if (metadata_filter.has_content()) { + ::encode_xml("S3Metadata", metadata_filter, f); + } + if (tag_filter.has_content()) { + ::encode_xml("S3Tags", tag_filter, f); + } +} + +bool rgw_s3_filter::has_content() const { + return key_filter.has_content() || + metadata_filter.has_content() || + tag_filter.has_content(); +} + +bool match(const rgw_s3_key_filter& filter, const std::string& key) { + const auto key_size = key.size(); + const auto prefix_size = filter.prefix_rule.size(); + if (prefix_size != 0) { + // prefix rule exists + if (prefix_size > key_size) { + // if prefix is longer than key, we fail + return false; + } + if (!std::equal(filter.prefix_rule.begin(), filter.prefix_rule.end(), key.begin())) { + return false; + } + } + const auto suffix_size = filter.suffix_rule.size(); + if (suffix_size != 0) { + // suffix rule exists + if (suffix_size > key_size) { + // if suffix is longer than key, we fail + return false; + } + if (!std::equal(filter.suffix_rule.begin(), filter.suffix_rule.end(), (key.end() - suffix_size))) { + return false; + } + } + if (!filter.regex_rule.empty()) { + // TODO add regex chaching in the filter + const std::regex base_regex(filter.regex_rule); + if (!std::regex_match(key, base_regex)) { + return false; + } + } + return true; +} + +bool match(const rgw_s3_key_value_filter& filter, const KeyValueMap& kv) { + // all filter pairs must exist with the same value in the object's metadata/tags + // object metadata/tags may include items not in the filter + return std::includes(kv.begin(), kv.end(), filter.kv.begin(), filter.kv.end()); +} + +bool match(const rgw_s3_key_value_filter& filter, const KeyMultiValueMap& kv) { + // all filter pairs must exist with the same value in the object's metadata/tags + // object metadata/tags may include items not in the filter + for (auto& filter : filter.kv) { + auto result = kv.equal_range(filter.first); + if (std::any_of(result.first, result.second, [&filter](const pair<string,string>& p) { return p.second == filter.second;})) + continue; + else + return false; + } + return true; +} + +bool match(const rgw::notify::EventTypeList& events, rgw::notify::EventType event) { + // if event list exists, and none of the events in the list matches the event type, filter the message + if (!events.empty() && std::find(events.begin(), events.end(), event) == events.end()) { + return false; + } + return true; +} + +void do_decode_xml_obj(rgw::notify::EventTypeList& l, const string& name, XMLObj *obj) { + l.clear(); + + XMLObjIter iter = obj->find(name); + XMLObj *o; + + while ((o = iter.get_next())) { + std::string val; + decode_xml_obj(val, o); + l.push_back(rgw::notify::from_string(val)); + } +} + +bool rgw_pubsub_s3_notification::decode_xml(XMLObj *obj) { + const auto throw_if_missing = true; + RGWXMLDecoder::decode_xml("Id", id, obj, throw_if_missing); + + RGWXMLDecoder::decode_xml("Topic", topic_arn, obj, throw_if_missing); + + RGWXMLDecoder::decode_xml("Filter", filter, obj); + + do_decode_xml_obj(events, "Event", obj); + if (events.empty()) { + // if no events are provided, we assume all events + events.push_back(rgw::notify::ObjectCreated); + events.push_back(rgw::notify::ObjectRemoved); + } + return true; +} + +void rgw_pubsub_s3_notification::dump_xml(Formatter *f) const { + ::encode_xml("Id", id, f); + ::encode_xml("Topic", topic_arn.c_str(), f); + if (filter.has_content()) { + ::encode_xml("Filter", filter, f); + } + for (const auto& event : events) { + ::encode_xml("Event", rgw::notify::to_string(event), f); + } +} + +bool rgw_pubsub_s3_notifications::decode_xml(XMLObj *obj) { + do_decode_xml_obj(list, "TopicConfiguration", obj); + if (list.empty()) { + throw RGWXMLDecoder::err("at least one 'TopicConfiguration' must exist"); + } + return true; +} + +rgw_pubsub_s3_notification::rgw_pubsub_s3_notification(const rgw_pubsub_topic_filter& topic_filter) : + id(topic_filter.s3_id), events(topic_filter.events), topic_arn(topic_filter.topic.arn), filter(topic_filter.s3_filter) {} + +void rgw_pubsub_s3_notifications::dump_xml(Formatter *f) const { + do_encode_xml("NotificationConfiguration", list, "TopicConfiguration", f); +} + +void rgw_pubsub_s3_event::dump(Formatter *f) const { + encode_json("eventVersion", eventVersion, f); + encode_json("eventSource", eventSource, f); + encode_json("awsRegion", awsRegion, f); + utime_t ut(eventTime); + encode_json("eventTime", ut, f); + encode_json("eventName", eventName, f); + { + Formatter::ObjectSection s(*f, "userIdentity"); + encode_json("principalId", userIdentity, f); + } + { + Formatter::ObjectSection s(*f, "requestParameters"); + encode_json("sourceIPAddress", sourceIPAddress, f); + } + { + Formatter::ObjectSection s(*f, "responseElements"); + encode_json("x-amz-request-id", x_amz_request_id, f); + encode_json("x-amz-id-2", x_amz_id_2, f); + } + { + Formatter::ObjectSection s(*f, "s3"); + encode_json("s3SchemaVersion", s3SchemaVersion, f); + encode_json("configurationId", configurationId, f); + { + Formatter::ObjectSection sub_s(*f, "bucket"); + encode_json("name", bucket_name, f); + { + Formatter::ObjectSection sub_sub_s(*f, "ownerIdentity"); + encode_json("principalId", bucket_ownerIdentity, f); + } + encode_json("arn", bucket_arn, f); + encode_json("id", bucket_id, f); + } + { + Formatter::ObjectSection sub_s(*f, "object"); + encode_json("key", object_key, f); + encode_json("size", object_size, f); + encode_json("eTag", object_etag, f); + encode_json("versionId", object_versionId, f); + encode_json("sequencer", object_sequencer, f); + encode_json("metadata", x_meta_map, f); + encode_json("tags", tags, f); + } + } + encode_json("eventId", id, f); + encode_json("opaqueData", opaque_data, f); +} + +void rgw_pubsub_event::dump(Formatter *f) const +{ + encode_json("id", id, f); + encode_json("event", event_name, f); + utime_t ut(timestamp); + encode_json("timestamp", ut, f); + encode_json("info", info, f); +} + +void rgw_pubsub_topic::dump(Formatter *f) const +{ + encode_json("user", user, f); + encode_json("name", name, f); + encode_json("dest", dest, f); + encode_json("arn", arn, f); + encode_json("opaqueData", opaque_data, f); +} + +void rgw_pubsub_topic::dump_xml(Formatter *f) const +{ + encode_xml("User", user, f); + encode_xml("Name", name, f); + encode_xml("EndPoint", dest, f); + encode_xml("TopicArn", arn, f); + encode_xml("OpaqueData", opaque_data, f); +} + +void encode_xml_key_value_entry(const std::string& key, const std::string& value, Formatter *f) { + f->open_object_section("entry"); + encode_xml("key", key, f); + encode_xml("value", value, f); + f->close_section(); // entry +} + +void rgw_pubsub_topic::dump_xml_as_attributes(Formatter *f) const +{ + f->open_array_section("Attributes"); + std::string str_user; + user.to_str(str_user); + encode_xml_key_value_entry("User", str_user, f); + encode_xml_key_value_entry("Name", name, f); + encode_xml_key_value_entry("EndPoint", dest.to_json_str(), f); + encode_xml_key_value_entry("TopicArn", arn, f); + encode_xml_key_value_entry("OpaqueData", opaque_data, f); + f->close_section(); // Attributes +} + +void encode_json(const char *name, const rgw::notify::EventTypeList& l, Formatter *f) +{ + f->open_array_section(name); + for (auto iter = l.cbegin(); iter != l.cend(); ++iter) { + f->dump_string("obj", rgw::notify::to_ceph_string(*iter)); + } + f->close_section(); +} + +void rgw_pubsub_topic_filter::dump(Formatter *f) const +{ + encode_json("topic", topic, f); + encode_json("events", events, f); +} + +void rgw_pubsub_topic_subs::dump(Formatter *f) const +{ + encode_json("topic", topic, f); + encode_json("subs", subs, f); +} + +void rgw_pubsub_bucket_topics::dump(Formatter *f) const +{ + Formatter::ArraySection s(*f, "topics"); + for (auto& t : topics) { + encode_json(t.first.c_str(), t.second, f); + } +} + +void rgw_pubsub_topics::dump(Formatter *f) const +{ + Formatter::ArraySection s(*f, "topics"); + for (auto& t : topics) { + encode_json(t.first.c_str(), t.second, f); + } +} + +void rgw_pubsub_topics::dump_xml(Formatter *f) const +{ + for (auto& t : topics) { + encode_xml("member", t.second.topic, f); + } +} + +void rgw_pubsub_sub_dest::dump(Formatter *f) const +{ + encode_json("bucket_name", bucket_name, f); + encode_json("oid_prefix", oid_prefix, f); + encode_json("push_endpoint", push_endpoint, f); + encode_json("push_endpoint_args", push_endpoint_args, f); + encode_json("push_endpoint_topic", arn_topic, f); + encode_json("stored_secret", stored_secret, f); + encode_json("persistent", persistent, f); +} + +void rgw_pubsub_sub_dest::dump_xml(Formatter *f) const +{ + // first 2 members are omitted here since they + // dont apply to AWS compliant topics + encode_xml("EndpointAddress", push_endpoint, f); + encode_xml("EndpointArgs", push_endpoint_args, f); + encode_xml("EndpointTopic", arn_topic, f); + encode_xml("HasStoredSecret", stored_secret, f); + encode_xml("Persistent", persistent, f); +} + +std::string rgw_pubsub_sub_dest::to_json_str() const +{ + // first 2 members are omitted here since they + // dont apply to AWS compliant topics + JSONFormatter f; + f.open_object_section(""); + encode_json("EndpointAddress", push_endpoint, &f); + encode_json("EndpointArgs", push_endpoint_args, &f); + encode_json("EndpointTopic", arn_topic, &f); + encode_json("HasStoredSecret", stored_secret, &f); + encode_json("Persistent", persistent, &f); + f.close_section(); + std::stringstream ss; + f.flush(ss); + return ss.str(); +} + +void rgw_pubsub_sub_config::dump(Formatter *f) const +{ + encode_json("user", user, f); + encode_json("name", name, f); + encode_json("topic", topic, f); + encode_json("dest", dest, f); + encode_json("s3_id", s3_id, f); +} + +RGWPubSub::RGWPubSub(rgw::sal::RGWRadosStore* _store, const std::string& _tenant) : + store(_store), + tenant(_tenant), + obj_ctx(store->svc()->sysobj->init_obj_ctx()) { + get_meta_obj(&meta_obj); +} + +int RGWPubSub::remove(const DoutPrefixProvider *dpp, + const rgw_raw_obj& obj, + RGWObjVersionTracker *objv_tracker, + optional_yield y) +{ + int ret = rgw_delete_system_obj(dpp, store->svc()->sysobj, obj.pool, obj.oid, objv_tracker, y); + if (ret < 0) { + return ret; + } + + return 0; +} + +int RGWPubSub::read_topics(rgw_pubsub_topics *result, RGWObjVersionTracker *objv_tracker) +{ + int ret = read(meta_obj, result, objv_tracker); + if (ret < 0) { + ldout(store->ctx(), 10) << "WARNING: failed to read topics info: ret=" << ret << dendl; + return ret; + } + return 0; +} + +int RGWPubSub::write_topics(const DoutPrefixProvider *dpp, const rgw_pubsub_topics& topics, + RGWObjVersionTracker *objv_tracker, optional_yield y) +{ + int ret = write(dpp, meta_obj, topics, objv_tracker, y); + if (ret < 0 && ret != -ENOENT) { + ldpp_dout(dpp, 1) << "ERROR: failed to write topics info: ret=" << ret << dendl; + return ret; + } + return 0; +} + +int RGWPubSub::get_topics(rgw_pubsub_topics *result) +{ + return read_topics(result, nullptr); +} + +int RGWPubSub::Bucket::read_topics(rgw_pubsub_bucket_topics *result, RGWObjVersionTracker *objv_tracker) +{ + int ret = ps->read(bucket_meta_obj, result, objv_tracker); + if (ret < 0 && ret != -ENOENT) { + ldout(ps->store->ctx(), 1) << "ERROR: failed to read bucket topics info: ret=" << ret << dendl; + return ret; + } + return 0; +} + +int RGWPubSub::Bucket::write_topics(const DoutPrefixProvider *dpp, const rgw_pubsub_bucket_topics& topics, + RGWObjVersionTracker *objv_tracker, + optional_yield y) +{ + int ret = ps->write(dpp, bucket_meta_obj, topics, objv_tracker, y); + if (ret < 0) { + ldout(ps->store->ctx(), 1) << "ERROR: failed to write bucket topics info: ret=" << ret << dendl; + return ret; + } + + return 0; +} + +int RGWPubSub::Bucket::get_topics(rgw_pubsub_bucket_topics *result) +{ + return read_topics(result, nullptr); +} + +int RGWPubSub::get_topic(const string& name, rgw_pubsub_topic_subs *result) +{ + rgw_pubsub_topics topics; + int ret = get_topics(&topics); + if (ret < 0) { + ldout(store->ctx(), 1) << "ERROR: failed to read topics info: ret=" << ret << dendl; + return ret; + } + + auto iter = topics.topics.find(name); + if (iter == topics.topics.end()) { + ldout(store->ctx(), 1) << "ERROR: topic not found" << dendl; + return -ENOENT; + } + + *result = iter->second; + return 0; +} + +int RGWPubSub::get_topic(const string& name, rgw_pubsub_topic *result) +{ + rgw_pubsub_topics topics; + int ret = get_topics(&topics); + if (ret < 0) { + ldout(store->ctx(), 1) << "ERROR: failed to read topics info: ret=" << ret << dendl; + return ret; + } + + auto iter = topics.topics.find(name); + if (iter == topics.topics.end()) { + ldout(store->ctx(), 1) << "ERROR: topic not found" << dendl; + return -ENOENT; + } + + *result = iter->second.topic; + return 0; +} + +int RGWPubSub::Bucket::create_notification(const DoutPrefixProvider *dpp, const string& topic_name, const rgw::notify::EventTypeList& events, optional_yield y) { + return create_notification(dpp, topic_name, events, std::nullopt, "", y); +} + +int RGWPubSub::Bucket::create_notification(const DoutPrefixProvider *dpp, const string& topic_name,const rgw::notify::EventTypeList& events, OptionalFilter s3_filter, const std::string& notif_name, optional_yield y) { + rgw_pubsub_topic_subs topic_info; + + int ret = ps->get_topic(topic_name, &topic_info); + if (ret < 0) { + ldpp_dout(dpp, 1) << "ERROR: failed to read topic '" << topic_name << "' info: ret=" << ret << dendl; + return ret; + } + ldpp_dout(dpp, 20) << "successfully read topic '" << topic_name << "' info" << dendl; + + RGWObjVersionTracker objv_tracker; + rgw_pubsub_bucket_topics bucket_topics; + + ret = read_topics(&bucket_topics, &objv_tracker); + if (ret < 0) { + ldpp_dout(dpp, 1) << "ERROR: failed to read topics from bucket '" << + bucket.name << "': ret=" << ret << dendl; + return ret; + } + ldpp_dout(dpp, 20) << "successfully read " << bucket_topics.topics.size() << " topics from bucket '" << + bucket.name << "'" << dendl; + + auto& topic_filter = bucket_topics.topics[topic_name]; + topic_filter.topic = topic_info.topic; + topic_filter.events = events; + topic_filter.s3_id = notif_name; + if (s3_filter) { + topic_filter.s3_filter = *s3_filter; + } + + ret = write_topics(dpp, bucket_topics, &objv_tracker, y); + if (ret < 0) { + ldpp_dout(dpp, 1) << "ERROR: failed to write topics to bucket '" << bucket.name << "': ret=" << ret << dendl; + return ret; + } + + ldpp_dout(dpp, 20) << "successfully wrote " << bucket_topics.topics.size() << " topics to bucket '" << bucket.name << "'" << dendl; + + return 0; +} + +int RGWPubSub::Bucket::remove_notification(const DoutPrefixProvider *dpp, const string& topic_name, optional_yield y) +{ + rgw_pubsub_topic_subs topic_info; + + int ret = ps->get_topic(topic_name, &topic_info); + if (ret < 0) { + ldpp_dout(dpp, 1) << "ERROR: failed to read topic info: ret=" << ret << dendl; + return ret; + } + + RGWObjVersionTracker objv_tracker; + rgw_pubsub_bucket_topics bucket_topics; + + ret = read_topics(&bucket_topics, &objv_tracker); + if (ret < 0) { + ldpp_dout(dpp, 1) << "ERROR: failed to read bucket topics info: ret=" << ret << dendl; + return ret; + } + + bucket_topics.topics.erase(topic_name); + + if (bucket_topics.topics.empty()) { + // no more topics - delete the notification object of the bucket + ret = ps->remove(dpp, bucket_meta_obj, &objv_tracker, y); + if (ret < 0 && ret != -ENOENT) { + ldout(ps->store->ctx(), 1) << "ERROR: failed to remove bucket topics: ret=" << ret << dendl; + return ret; + } + return 0; + } + + // write back the notifications without the deleted one + ret = write_topics(dpp, bucket_topics, &objv_tracker, y); + if (ret < 0) { + ldpp_dout(dpp, 1) << "ERROR: failed to write topics info: ret=" << ret << dendl; + return ret; + } + + return 0; +} + +int RGWPubSub::Bucket::remove_notifications(const DoutPrefixProvider *dpp, optional_yield y) +{ + // get all topics on a bucket + rgw_pubsub_bucket_topics bucket_topics; + auto ret = get_topics(&bucket_topics); + if (ret < 0 && ret != -ENOENT) { + ldpp_dout(dpp, 1) << "ERROR: failed to get list of topics from bucket '" << bucket.name << "', ret=" << ret << dendl; + return ret ; + } + + // remove all auto-genrated topics + for (const auto& topic : bucket_topics.topics) { + const auto& topic_name = topic.first; + ret = ps->remove_topic(dpp, topic_name, y); + if (ret < 0 && ret != -ENOENT) { + ldpp_dout(dpp, 5) << "WARNING: failed to remove auto-generated topic '" << topic_name << "', ret=" << ret << dendl; + } + } + + // delete the notification object of the bucket + ret = ps->remove(dpp, bucket_meta_obj, nullptr, y); + if (ret < 0 && ret != -ENOENT) { + ldpp_dout(dpp, 1) << "ERROR: failed to remove bucket topics: ret=" << ret << dendl; + return ret; + } + + return 0; +} + +int RGWPubSub::create_topic(const DoutPrefixProvider *dpp, const string& name, optional_yield y) { + return create_topic(dpp, name, rgw_pubsub_sub_dest(), "", "", y); +} + +int RGWPubSub::create_topic(const DoutPrefixProvider *dpp, const string& name, const rgw_pubsub_sub_dest& dest, const std::string& arn, const std::string& opaque_data, optional_yield y) { + RGWObjVersionTracker objv_tracker; + rgw_pubsub_topics topics; + + int ret = read_topics(&topics, &objv_tracker); + if (ret < 0 && ret != -ENOENT) { + // its not an error if not topics exist, we create one + ldpp_dout(dpp, 1) << "ERROR: failed to read topics info: ret=" << ret << dendl; + return ret; + } + + rgw_pubsub_topic_subs& new_topic = topics.topics[name]; + new_topic.topic.user = rgw_user("", tenant); + new_topic.topic.name = name; + new_topic.topic.dest = dest; + new_topic.topic.arn = arn; + new_topic.topic.opaque_data = opaque_data; + + ret = write_topics(dpp, topics, &objv_tracker, y); + if (ret < 0) { + ldpp_dout(dpp, 1) << "ERROR: failed to write topics info: ret=" << ret << dendl; + return ret; + } + + return 0; +} + +int RGWPubSub::remove_topic(const DoutPrefixProvider *dpp, const string& name, optional_yield y) +{ + RGWObjVersionTracker objv_tracker; + rgw_pubsub_topics topics; + + int ret = read_topics(&topics, &objv_tracker); + if (ret < 0 && ret != -ENOENT) { + ldpp_dout(dpp, 1) << "ERROR: failed to read topics info: ret=" << ret << dendl; + return ret; + } else if (ret == -ENOENT) { + // its not an error if no topics exist, just a no-op + ldpp_dout(dpp, 10) << "WARNING: failed to read topics info, deletion is a no-op: ret=" << ret << dendl; + return 0; + } + + topics.topics.erase(name); + + ret = write_topics(dpp, topics, &objv_tracker, y); + if (ret < 0) { + ldpp_dout(dpp, 1) << "ERROR: failed to remove topics info: ret=" << ret << dendl; + return ret; + } + + return 0; +} + +int RGWPubSub::Sub::read_sub(rgw_pubsub_sub_config *result, RGWObjVersionTracker *objv_tracker) +{ + int ret = ps->read(sub_meta_obj, result, objv_tracker); + if (ret < 0 && ret != -ENOENT) { + ldout(ps->store->ctx(), 1) << "ERROR: failed to read subscription info: ret=" << ret << dendl; + return ret; + } + return 0; +} + +int RGWPubSub::Sub::write_sub(const DoutPrefixProvider *dpp, + const rgw_pubsub_sub_config& sub_conf, + RGWObjVersionTracker *objv_tracker, + optional_yield y) +{ + int ret = ps->write(dpp, sub_meta_obj, sub_conf, objv_tracker, y); + if (ret < 0) { + ldpp_dout(dpp, 1) << "ERROR: failed to write subscription info: ret=" << ret << dendl; + return ret; + } + + return 0; +} + +int RGWPubSub::Sub::remove_sub(const DoutPrefixProvider *dpp, RGWObjVersionTracker *objv_tracker, + optional_yield y) +{ + int ret = ps->remove(dpp, sub_meta_obj, objv_tracker, y); + if (ret < 0) { + ldpp_dout(dpp, 1) << "ERROR: failed to remove subscription info: ret=" << ret << dendl; + return ret; + } + + return 0; +} + +int RGWPubSub::Sub::get_conf(rgw_pubsub_sub_config *result) +{ + return read_sub(result, nullptr); +} + +int RGWPubSub::Sub::subscribe(const DoutPrefixProvider *dpp, const string& topic, const rgw_pubsub_sub_dest& dest, optional_yield y, const std::string& s3_id) +{ + RGWObjVersionTracker objv_tracker; + rgw_pubsub_topics topics; + + int ret = ps->read_topics(&topics, &objv_tracker); + if (ret < 0) { + ldpp_dout(dpp, 1) << "ERROR: failed to read topics info: ret=" << ret << dendl; + return ret != -ENOENT ? ret : -EINVAL; + } + + auto iter = topics.topics.find(topic); + if (iter == topics.topics.end()) { + ldpp_dout(dpp, 1) << "ERROR: cannot add subscription to topic: topic not found" << dendl; + return -EINVAL; + } + + auto& t = iter->second; + + rgw_pubsub_sub_config sub_conf; + + sub_conf.user = rgw_user("", ps->tenant); + sub_conf.name = sub; + sub_conf.topic = topic; + sub_conf.dest = dest; + sub_conf.s3_id = s3_id; + + t.subs.insert(sub); + + ret = ps->write_topics(dpp, topics, &objv_tracker, y); + if (ret < 0) { + ldpp_dout(dpp, 1) << "ERROR: failed to write topics info: ret=" << ret << dendl; + return ret; + } + + ret = write_sub(dpp, sub_conf, nullptr, y); + if (ret < 0) { + ldpp_dout(dpp, 1) << "ERROR: failed to write subscription info: ret=" << ret << dendl; + return ret; + } + return 0; +} + +int RGWPubSub::Sub::unsubscribe(const DoutPrefixProvider *dpp, const string& _topic, optional_yield y) +{ + string topic = _topic; + RGWObjVersionTracker sobjv_tracker; + + if (topic.empty()) { + rgw_pubsub_sub_config sub_conf; + int ret = read_sub(&sub_conf, &sobjv_tracker); + if (ret < 0) { + ldpp_dout(dpp, 1) << "ERROR: failed to read subscription info: ret=" << ret << dendl; + return ret; + } + topic = sub_conf.topic; + } + + RGWObjVersionTracker objv_tracker; + rgw_pubsub_topics topics; + + int ret = ps->read_topics(&topics, &objv_tracker); + if (ret < 0) { + // not an error - could be that topic was already deleted + ldpp_dout(dpp, 10) << "WARNING: failed to read topics info: ret=" << ret << dendl; + } else { + auto iter = topics.topics.find(topic); + if (iter != topics.topics.end()) { + auto& t = iter->second; + + t.subs.erase(sub); + + ret = ps->write_topics(dpp, topics, &objv_tracker, y); + if (ret < 0) { + ldpp_dout(dpp, 1) << "ERROR: failed to write topics info: ret=" << ret << dendl; + return ret; + } + } + } + + ret = remove_sub(dpp, &sobjv_tracker, y); + if (ret < 0) { + ldpp_dout(dpp, 1) << "ERROR: failed to delete subscription info: ret=" << ret << dendl; + return ret; + } + return 0; +} + +template<typename EventType> +void RGWPubSub::SubWithEvents<EventType>::list_events_result::dump(Formatter *f) const +{ + encode_json("next_marker", next_marker, f); + encode_json("is_truncated", is_truncated, f); + + Formatter::ArraySection s(*f, EventType::json_type_plural); + for (auto& event : events) { + encode_json("", event, f); + } +} + +template<typename EventType> +int RGWPubSub::SubWithEvents<EventType>::list_events(const DoutPrefixProvider *dpp, const string& marker, int max_events) +{ + RGWRados *store = ps->store->getRados(); + rgw_pubsub_sub_config sub_conf; + int ret = get_conf(&sub_conf); + if (ret < 0) { + ldpp_dout(dpp, 1) << "ERROR: failed to read sub config: ret=" << ret << dendl; + return ret; + } + + RGWBucketInfo bucket_info; + string tenant; + ret = store->get_bucket_info(&store->svc, tenant, sub_conf.dest.bucket_name, bucket_info, nullptr, null_yield, nullptr); + if (ret == -ENOENT) { + list.is_truncated = false; + return 0; + } + if (ret < 0) { + ldpp_dout(dpp, 1) << "ERROR: failed to read bucket info for events bucket: bucket=" << sub_conf.dest.bucket_name << " ret=" << ret << dendl; + return ret; + } + + RGWRados::Bucket target(store, bucket_info); + RGWRados::Bucket::List list_op(&target); + + list_op.params.prefix = sub_conf.dest.oid_prefix; + list_op.params.marker = marker; + + std::vector<rgw_bucket_dir_entry> objs; + + ret = list_op.list_objects(dpp, max_events, &objs, nullptr, &list.is_truncated, null_yield); + if (ret < 0) { + ldpp_dout(dpp, 1) << "ERROR: failed to list bucket: bucket=" << sub_conf.dest.bucket_name << " ret=" << ret << dendl; + return ret; + } + if (list.is_truncated) { + list.next_marker = list_op.get_next_marker().name; + } + + for (auto& obj : objs) { + bufferlist bl64; + bufferlist bl; + bl64.append(obj.meta.user_data); + try { + bl.decode_base64(bl64); + } catch (buffer::error& err) { + ldpp_dout(dpp, 1) << "ERROR: failed to event (not a valid base64)" << dendl; + continue; + } + EventType event; + + auto iter = bl.cbegin(); + try { + decode(event, iter); + } catch (buffer::error& err) { + ldpp_dout(dpp, 1) << "ERROR: failed to decode event" << dendl; + continue; + }; + + list.events.push_back(event); + } + return 0; +} + +template<typename EventType> +int RGWPubSub::SubWithEvents<EventType>::remove_event(const DoutPrefixProvider *dpp, const string& event_id) +{ + rgw::sal::RGWRadosStore *store = ps->store; + rgw_pubsub_sub_config sub_conf; + int ret = get_conf(&sub_conf); + if (ret < 0) { + ldpp_dout(dpp, 1) << "ERROR: failed to read sub config: ret=" << ret << dendl; + return ret; + } + + RGWBucketInfo bucket_info; + string tenant; + ret = store->getRados()->get_bucket_info(store->svc(), tenant, sub_conf.dest.bucket_name, bucket_info, nullptr, null_yield, nullptr); + if (ret < 0) { + ldpp_dout(dpp, 1) << "ERROR: failed to read bucket info for events bucket: bucket=" << sub_conf.dest.bucket_name << " ret=" << ret << dendl; + return ret; + } + + rgw_bucket& bucket = bucket_info.bucket; + + RGWObjectCtx obj_ctx(store); + rgw_obj obj(bucket, sub_conf.dest.oid_prefix + event_id); + + obj_ctx.set_atomic(obj); + + RGWRados::Object del_target(store->getRados(), bucket_info, obj_ctx, obj); + RGWRados::Object::Delete del_op(&del_target); + + del_op.params.bucket_owner = bucket_info.owner; + del_op.params.versioning_status = bucket_info.versioning_status(); + + ret = del_op.delete_obj(null_yield, dpp); + if (ret < 0) { + ldpp_dout(dpp, 1) << "ERROR: failed to remove event (obj=" << obj << "): ret=" << ret << dendl; + } + return 0; +} + +void RGWPubSub::get_meta_obj(rgw_raw_obj *obj) const { + *obj = rgw_raw_obj(store->svc()->zone->get_zone_params().log_pool, meta_oid()); +} + +void RGWPubSub::get_bucket_meta_obj(const rgw_bucket& bucket, rgw_raw_obj *obj) const { + *obj = rgw_raw_obj(store->svc()->zone->get_zone_params().log_pool, bucket_meta_oid(bucket)); +} + +void RGWPubSub::get_sub_meta_obj(const string& name, rgw_raw_obj *obj) const { + *obj = rgw_raw_obj(store->svc()->zone->get_zone_params().log_pool, sub_meta_oid(name)); +} + +template<typename EventType> +void RGWPubSub::SubWithEvents<EventType>::dump(Formatter* f) const { + list.dump(f); +} + +// explicit instantiation for the only two possible types +// no need to move implementation to header +template class RGWPubSub::SubWithEvents<rgw_pubsub_event>; +template class RGWPubSub::SubWithEvents<rgw_pubsub_s3_event>; + |