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/*
* Copyright (c) 2009, 2010, 2012, 2013 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef JSONRPC_H
#define JSONRPC_H 1
/* This is an implementation of the JSON-RPC 1.0 specification defined at
* http://json-rpc.org/wiki/specification. */
#include <stdbool.h>
#include <stddef.h>
#include "openvswitch/types.h"
struct json;
struct jsonrpc_msg;
struct pstream;
struct reconnect_stats;
struct stream;
/* API for a JSON-RPC stream. */
/* Default port numbers.
*
* OVSDB_OLD_PORT defines the original port number used by OVS.
* OVSDB_PORT defines the official port number assigned by IANA. */
#define OVSDB_OLD_PORT 6632
#define OVSDB_PORT 6640
int jsonrpc_stream_open(const char *name, struct stream **, uint8_t dscp);
int jsonrpc_pstream_open(const char *name, struct pstream **, uint8_t dscp);
struct jsonrpc *jsonrpc_open(struct stream *);
void jsonrpc_close(struct jsonrpc *);
void jsonrpc_run(struct jsonrpc *);
void jsonrpc_wait(struct jsonrpc *);
int jsonrpc_get_status(const struct jsonrpc *);
size_t jsonrpc_get_backlog(const struct jsonrpc *);
unsigned int jsonrpc_get_received_bytes(const struct jsonrpc *);
const char *jsonrpc_get_name(const struct jsonrpc *);
int jsonrpc_send(struct jsonrpc *, struct jsonrpc_msg *);
int jsonrpc_recv(struct jsonrpc *, struct jsonrpc_msg **);
void jsonrpc_recv_wait(struct jsonrpc *);
int jsonrpc_send_block(struct jsonrpc *, struct jsonrpc_msg *);
int jsonrpc_recv_block(struct jsonrpc *, struct jsonrpc_msg **);
int jsonrpc_transact_block(struct jsonrpc *, struct jsonrpc_msg *,
struct jsonrpc_msg **);
/* Messages. */
enum jsonrpc_msg_type {
JSONRPC_REQUEST, /* Request. */
JSONRPC_NOTIFY, /* Notification. */
JSONRPC_REPLY, /* Successful reply. */
JSONRPC_ERROR /* Error reply. */
};
struct jsonrpc_msg {
enum jsonrpc_msg_type type;
char *method; /* Request or notification only. */
struct json *params; /* Request or notification only. */
struct json *result; /* Successful reply only. */
struct json *error; /* Error reply only. */
struct json *id; /* Request or reply only. */
};
struct jsonrpc_msg *jsonrpc_create_request(const char *method,
struct json *params,
struct json **idp);
struct jsonrpc_msg *jsonrpc_create_notify(const char *method,
struct json *params);
struct jsonrpc_msg *jsonrpc_create_reply(struct json *result,
const struct json *id);
struct jsonrpc_msg *jsonrpc_create_error(struct json *error,
const struct json *id);
const char *jsonrpc_msg_type_to_string(enum jsonrpc_msg_type);
char *jsonrpc_msg_is_valid(const struct jsonrpc_msg *);
void jsonrpc_msg_destroy(struct jsonrpc_msg *);
char *jsonrpc_msg_from_json(struct json *, struct jsonrpc_msg **);
struct json *jsonrpc_msg_to_json(struct jsonrpc_msg *);
/* A JSON-RPC session with reconnection. */
struct jsonrpc_session *jsonrpc_session_open(const char *name, bool retry);
struct jsonrpc_session *jsonrpc_session_open_unreliably(struct jsonrpc *,
uint8_t);
void jsonrpc_session_close(struct jsonrpc_session *);
void jsonrpc_session_run(struct jsonrpc_session *);
void jsonrpc_session_wait(struct jsonrpc_session *);
size_t jsonrpc_session_get_backlog(const struct jsonrpc_session *);
const char *jsonrpc_session_get_name(const struct jsonrpc_session *);
int jsonrpc_session_send(struct jsonrpc_session *, struct jsonrpc_msg *);
struct jsonrpc_msg *jsonrpc_session_recv(struct jsonrpc_session *);
void jsonrpc_session_recv_wait(struct jsonrpc_session *);
bool jsonrpc_session_is_alive(const struct jsonrpc_session *);
bool jsonrpc_session_is_connected(const struct jsonrpc_session *);
unsigned int jsonrpc_session_get_seqno(const struct jsonrpc_session *);
int jsonrpc_session_get_status(const struct jsonrpc_session *);
int jsonrpc_session_get_last_error(const struct jsonrpc_session *);
void jsonrpc_session_get_reconnect_stats(const struct jsonrpc_session *,
struct reconnect_stats *);
void jsonrpc_session_enable_reconnect(struct jsonrpc_session *);
void jsonrpc_session_force_reconnect(struct jsonrpc_session *);
void jsonrpc_session_set_max_backoff(struct jsonrpc_session *,
int max_backofF);
void jsonrpc_session_set_probe_interval(struct jsonrpc_session *,
int probe_interval);
void jsonrpc_session_set_dscp(struct jsonrpc_session *,
uint8_t dscp);
#endif /* jsonrpc.h */
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