James Robinson | 646469d | 2014-10-03 15:33:28 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2006 Niels Provos <provos@citi.umich.edu> |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * 3. The name of the author may not be used to endorse or promote products |
| 14 | * derived from this software without specific prior written permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 17 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 18 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 19 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 21 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 22 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 23 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 25 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 | */ |
| 27 | #ifndef _EVRPC_INTERNAL_H_ |
| 28 | #define _EVRPC_INTERNAL_H_ |
| 29 | |
| 30 | #include "http-internal.h" |
| 31 | |
| 32 | struct evrpc; |
| 33 | |
| 34 | #define EVRPC_URI_PREFIX "/.rpc." |
| 35 | |
| 36 | struct evrpc_hook { |
| 37 | TAILQ_ENTRY(evrpc_hook) (next); |
| 38 | |
| 39 | /* returns -1; if the rpc should be aborted, is allowed to rewrite */ |
| 40 | int (*process)(struct evhttp_request *, struct evbuffer *, void *); |
| 41 | void *process_arg; |
| 42 | }; |
| 43 | |
| 44 | TAILQ_HEAD(evrpc_hook_list, evrpc_hook); |
| 45 | |
| 46 | /* |
| 47 | * this is shared between the base and the pool, so that we can reuse |
| 48 | * the hook adding functions; we alias both evrpc_pool and evrpc_base |
| 49 | * to this common structure. |
| 50 | */ |
| 51 | struct _evrpc_hooks { |
| 52 | /* hooks for processing outbound and inbound rpcs */ |
| 53 | struct evrpc_hook_list in_hooks; |
| 54 | struct evrpc_hook_list out_hooks; |
| 55 | }; |
| 56 | |
| 57 | #define input_hooks common.in_hooks |
| 58 | #define output_hooks common.out_hooks |
| 59 | |
| 60 | struct evrpc_base { |
| 61 | struct _evrpc_hooks common; |
| 62 | |
| 63 | /* the HTTP server under which we register our RPC calls */ |
| 64 | struct evhttp* http_server; |
| 65 | |
| 66 | /* a list of all RPCs registered with us */ |
| 67 | TAILQ_HEAD(evrpc_list, evrpc) registered_rpcs; |
| 68 | }; |
| 69 | |
| 70 | struct evrpc_req_generic; |
| 71 | void evrpc_reqstate_free(struct evrpc_req_generic* rpc_state); |
| 72 | |
| 73 | /* A pool for holding evhttp_connection objects */ |
| 74 | struct evrpc_pool { |
| 75 | struct _evrpc_hooks common; |
| 76 | |
| 77 | struct event_base *base; |
| 78 | |
| 79 | struct evconq connections; |
| 80 | |
| 81 | int timeout; |
| 82 | |
| 83 | TAILQ_HEAD(evrpc_requestq, evrpc_request_wrapper) requests; |
| 84 | }; |
| 85 | |
| 86 | |
| 87 | #endif /* _EVRPC_INTERNAL_H_ */ |