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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab ft=cpp
#pragma once
#include <string>
#include <memory>
#include <stdexcept>
#include "include/buffer_fwd.h"
#include "include/common_fwd.h"
#include "common/async/yield_context.h"
// TODO the env should be used as a template parameter to differentiate the source that triggers the pushes
class RGWDataSyncEnv;
class RGWCoroutine;
class RGWHTTPArgs;
struct rgw_pubsub_event;
struct rgw_pubsub_s3_event;
// endpoint base class all endpoint - types should derive from it
class RGWPubSubEndpoint {
public:
RGWPubSubEndpoint() = default;
// endpoint should not be copied
RGWPubSubEndpoint(const RGWPubSubEndpoint&) = delete;
const RGWPubSubEndpoint& operator=(const RGWPubSubEndpoint&) = delete;
typedef std::unique_ptr<RGWPubSubEndpoint> Ptr;
// factory method for the actual notification endpoint
// derived class specific arguments are passed in http args format
// may throw a configuration_error if creation fails
static Ptr create(const std::string& endpoint, const std::string& topic, const RGWHTTPArgs& args, CephContext *cct=nullptr);
// this method is used in order to send notification (Ceph specific) and wait for completion
// in async manner via a coroutine when invoked in the data sync environment
virtual RGWCoroutine* send_to_completion_async(const rgw_pubsub_event& event, RGWDataSyncEnv* env) = 0;
// this method is used in order to send notification (S3 compliant) and wait for completion
// in async manner via a coroutine when invoked in the data sync environment
virtual RGWCoroutine* send_to_completion_async(const rgw_pubsub_s3_event& event, RGWDataSyncEnv* env) = 0;
// this method is used in order to send notification (S3 compliant) and wait for completion
// in async manner via a coroutine when invoked in the frontend environment
virtual int send_to_completion_async(CephContext* cct, const rgw_pubsub_s3_event& event, optional_yield y) = 0;
// present as string
virtual std::string to_str() const { return ""; }
virtual ~RGWPubSubEndpoint() = default;
// exception object for configuration error
struct configuration_error : public std::logic_error {
configuration_error(const std::string& what_arg) :
std::logic_error("pubsub endpoint configuration error: " + what_arg) {}
};
};
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