842ae4bd224140319ae7feec1872b93dfd491143fielding/* Licensed to the Apache Software Foundation (ASF) under one or more
842ae4bd224140319ae7feec1872b93dfd491143fielding * contributor license agreements. See the NOTICE file distributed with
842ae4bd224140319ae7feec1872b93dfd491143fielding * this work for additional information regarding copyright ownership.
842ae4bd224140319ae7feec1872b93dfd491143fielding * The ASF licenses this file to You under the Apache License, Version 2.0
842ae4bd224140319ae7feec1872b93dfd491143fielding * (the "License"); you may not use this file except in compliance with
842ae4bd224140319ae7feec1872b93dfd491143fielding * the License. You may obtain a copy of the License at
ce9621257ef9e54c1bbe5ad8a5f445a1f211c2dcnd * Unless required by applicable law or agreed to in writing, software
ce9621257ef9e54c1bbe5ad8a5f445a1f211c2dcnd * distributed under the License is distributed on an "AS IS" BASIS,
ce9621257ef9e54c1bbe5ad8a5f445a1f211c2dcnd * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ce9621257ef9e54c1bbe5ad8a5f445a1f211c2dcnd * See the License for the specific language governing permissions and
ce9621257ef9e54c1bbe5ad8a5f445a1f211c2dcnd * limitations under the License.
024cd9589e52cf11ce765dfddb5b5f0c6e421a48gstein#if !defined(DISTCACHE_CLIENT_API) || (DISTCACHE_CLIENT_API < 0x0001)
a742cbb3e85669473b3233f30e3978bb6a20083cylavic#error "You must compile with a more recent version of the distcache-base package"
a742cbb3e85669473b3233f30e3978bb6a20083cylavic /* Configured target server: */
77e0c54d01cb01e700e939a78afa49a7aa1e2275pquerna /* distcache client context: */
7184de27ec1d62a83c41cdeac0953ca9fd661e8csfstatic const char *socache_dc_create(ap_socache_instance_t **context,
7184de27ec1d62a83c41cdeac0953ca9fd661e8csf const char *arg,
a742cbb3e85669473b3233f30e3978bb6a20083cylavicstatic apr_status_t socache_dc_init(ap_socache_instance_t *ctx,
a742cbb3e85669473b3233f30e3978bb6a20083cylavic const char *namespace,
dc9d4f49d36e64c0157d930cb22ca82a6291c0cbdgaudet /* If a "persistent connection" mode of operation is preferred, you *must*
dc9d4f49d36e64c0157d930cb22ca82a6291c0cbdgaudet * also use the PIDCHECK flag to ensure fork()'d processes don't interlace
a742cbb3e85669473b3233f30e3978bb6a20083cylavic * comms on the same connection as each other. */
dc9d4f49d36e64c0157d930cb22ca82a6291c0cbdgaudet#define SESSION_CTX_FLAGS SESSION_CTX_FLAG_PERSISTENT | \
dc9d4f49d36e64c0157d930cb22ca82a6291c0cbdgaudet /* This mode of operation will open a temporary connection to the 'target'
dc9d4f49d36e64c0157d930cb22ca82a6291c0cbdgaudet * for each cache operation - this makes it safe against fork()
77e0c54d01cb01e700e939a78afa49a7aa1e2275pquerna * automatically. This mode is preferred when running a local proxy (over
dc9d4f49d36e64c0157d930cb22ca82a6291c0cbdgaudet * unix domain sockets) because overhead is negligable and it reduces the
1ccd992d37d62c8cb2056126f2234f64ec189bfddougm * performance/stability danger of file-descriptor bloatage. */
95d00ea81131488769296fa5765ed745cbf45207trawick ctx->dc = DC_CTX_new(ctx->target, SESSION_CTX_FLAGS);
95d00ea81131488769296fa5765ed745cbf45207trawick ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, APLOGNO(00738) "distributed scache failed to obtain context");
95d00ea81131488769296fa5765ed745cbf45207trawick ap_log_error(APLOG_MARK, APLOG_INFO, 0, s, APLOGNO(00739) "distributed scache context initialised");
ebf4099fd4921bbbcef21dc872b9cd4fc73e9f55trawickstatic void socache_dc_destroy(ap_socache_instance_t *ctx, server_rec *s)
2261031aa94be82d7e6b1b8c367afc1b282317f5ianhstatic apr_status_t socache_dc_store(ap_socache_instance_t *ctx, server_rec *s,
cf24c48249f38c34c04617f5b78b240f1cee380ajerenkrantz /* !@#$%^ - why do we deal with *absolute* time anyway???
cf24c48249f38c34c04617f5b78b240f1cee380ajerenkrantz * Uhm - because most things expire things at a specific time?
dc9d4f49d36e64c0157d930cb22ca82a6291c0cbdgaudet * Were the API were thought out expiry - r->request_time is a good approximation
dc9d4f49d36e64c0157d930cb22ca82a6291c0cbdgaudet /* Send the serialised session to the distributed cache context */
dc9d4f49d36e64c0157d930cb22ca82a6291c0cbdgaudet if (!DC_CTX_add_session(ctx->dc, id, idlen, der, der_len,
dc9d4f49d36e64c0157d930cb22ca82a6291c0cbdgaudet ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, APLOGNO(00740) "distributed scache 'store' failed");
dc9d4f49d36e64c0157d930cb22ca82a6291c0cbdgaudet ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, APLOGNO(00741) "distributed scache 'store' successful");
dc9d4f49d36e64c0157d930cb22ca82a6291c0cbdgaudetstatic apr_status_t socache_dc_retrieve(ap_socache_instance_t *ctx, server_rec *s,
dc9d4f49d36e64c0157d930cb22ca82a6291c0cbdgaudet /* Retrieve any corresponding session from the distributed cache context */
dc9d4f49d36e64c0157d930cb22ca82a6291c0cbdgaudet if (!DC_CTX_get_session(ctx->dc, id, idlen, dest, *destlen, &data_len)) {
9179fa90e821c964d10f28b97fc6acee776af7cfwrowe ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, APLOGNO(00742) "distributed scache 'retrieve' MISS");
2261031aa94be82d7e6b1b8c367afc1b282317f5ianh ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, APLOGNO(00743) "distributed scache 'retrieve' OVERFLOW");
dc9d4f49d36e64c0157d930cb22ca82a6291c0cbdgaudet ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, APLOGNO(00744) "distributed scache 'retrieve' HIT");
185aa71728867671e105178b4c66fbc22b65ae26sfstatic apr_status_t socache_dc_remove(ap_socache_instance_t *ctx,
275419d6395e6f072962fb701b89accaff1f3690jerenkrantz /* Remove any corresponding session from the distributed cache context */
275419d6395e6f072962fb701b89accaff1f3690jerenkrantz if (!DC_CTX_remove_session(ctx->dc, id, idlen)) {
275419d6395e6f072962fb701b89accaff1f3690jerenkrantz ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, APLOGNO(00745) "distributed scache 'remove' MISS");
b501b72e4bfed12a431278217ba66ae531d9a293rbb ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, APLOGNO(00746) "distributed scache 'remove' HIT");
a742cbb3e85669473b3233f30e3978bb6a20083cylavicstatic void socache_dc_status(ap_socache_instance_t *ctx, request_rec *r, int flags)
a742cbb3e85669473b3233f30e3978bb6a20083cylavic ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(00747)
a742cbb3e85669473b3233f30e3978bb6a20083cylavic "distributed scache 'socache_dc_status'");
a742cbb3e85669473b3233f30e3978bb6a20083cylavic ap_rprintf(r, "cache type: <b>DC (Distributed Cache)</b>, "
a742cbb3e85669473b3233f30e3978bb6a20083cylavic ap_rvputs(r, "CacheTarget: ", ctx->target, "\n", NULL);
77e0c54d01cb01e700e939a78afa49a7aa1e2275pquernastatic apr_status_t socache_dc_iterate(ap_socache_instance_t *instance,
77e0c54d01cb01e700e939a78afa49a7aa1e2275pquerna "distcache",