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117 lines
3.4 KiB
C
117 lines
3.4 KiB
C
/*
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* Copyright (c) 2006 Niels Provos <provos@citi.umich.edu>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _EVRPC_INTERNAL_H_
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#define _EVRPC_INTERNAL_H_
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#include "http-internal.h"
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struct evrpc;
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#define EVRPC_URI_PREFIX "/.rpc."
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struct evrpc_hook {
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TAILQ_ENTRY(evrpc_hook) (next);
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/* returns EVRPC_TERMINATE; if the rpc should be aborted.
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* a hook is is allowed to rewrite the evbuffer
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*/
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int (*process)(void *, struct evhttp_request *,
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struct evbuffer *, void *);
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void *process_arg;
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};
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TAILQ_HEAD(evrpc_hook_list, evrpc_hook);
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/*
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* this is shared between the base and the pool, so that we can reuse
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* the hook adding functions; we alias both evrpc_pool and evrpc_base
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* to this common structure.
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*/
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struct evrpc_hook_ctx;
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TAILQ_HEAD(evrpc_pause_list, evrpc_hook_ctx);
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struct _evrpc_hooks {
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/* hooks for processing outbound and inbound rpcs */
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struct evrpc_hook_list in_hooks;
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struct evrpc_hook_list out_hooks;
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struct evrpc_pause_list pause_requests;
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};
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#define input_hooks common.in_hooks
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#define output_hooks common.out_hooks
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#define paused_requests common.pause_requests
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struct evrpc_base {
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struct _evrpc_hooks common;
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/* the HTTP server under which we register our RPC calls */
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struct evhttp* http_server;
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/* a list of all RPCs registered with us */
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TAILQ_HEAD(evrpc_list, evrpc) registered_rpcs;
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};
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struct evrpc_req_generic;
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void evrpc_reqstate_free(struct evrpc_req_generic* rpc_state);
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/* A pool for holding evhttp_connection objects */
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struct evrpc_pool {
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struct _evrpc_hooks common;
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struct event_base *base;
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struct evconq connections;
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int timeout;
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TAILQ_HEAD(evrpc_requestq, evrpc_request_wrapper) (requests);
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};
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struct evrpc_hook_ctx {
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TAILQ_ENTRY(evrpc_hook_ctx) (next);
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void *ctx;
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void (*cb)(void *, enum EVRPC_HOOK_RESULT);
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};
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struct evrpc_meta {
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TAILQ_ENTRY(evrpc_meta) (next);
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char *key;
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void *data;
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size_t data_size;
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};
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TAILQ_HEAD(evrpc_meta_list, evrpc_meta);
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/* frees the meta data associated with a request */
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static void evrpc_meta_data_free(struct evrpc_meta_list *meta_data);
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#endif /* _EVRPC_INTERNAL_H_ */
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