1 #include "mod_ils_gateway.h"
3 char* ils_gateway_config_file;
4 char* ils_rest_gateway_config_file;
6 static const char* ils_gateway_set_config(cmd_parms *parms, void *config, const char *arg) {
7 ils_gateway_config *cfg;
10 cfg = ap_get_module_config(parms->server->module_config, &ils_rest_gateway_module);
12 cfg = ap_get_module_config(parms->server->module_config, &ils_gateway_module);
15 cfg->configfile = (char*) arg;
17 ils_rest_gateway_config_file = (char*) arg;
19 ils_gateway_config_file = (char*) arg;
25 /* tell apache about our commands */
26 static const command_rec ils_gateway_cmds[] = {
27 AP_INIT_TAKE1( GATEWAY_CONFIG, ils_gateway_set_config, NULL, RSRC_CONF, "gateway config file"),
31 /* build the config object */
32 static void* ils_gateway_create_config( apr_pool_t* p, server_rec* s) {
33 ils_gateway_config* cfg = (ils_gateway_config*) apr_palloc(p, sizeof(ils_gateway_config));
34 cfg->configfile = GATEWAY_DEFAULT_CONFIG;
39 static void mod_ils_gateway_child_init(apr_pool_t *p, server_rec *s) {
41 char* cfg = ils_gateway_config_file;
43 cfg = ils_gateway_config_file;
46 if( ! osrf_system_bootstrap_client( cfg, CONFIG_CONTEXT) )
47 fatal_handler("Unable to load gateway config file...");
48 fprintf(stderr, "Bootstrapping %d\n", getpid() );
52 static int mod_ils_gateway_method_handler (request_rec *r) {
54 /* make sure we're needed first thing*/
55 if (strcmp(r->handler, MODULE_NAME ))
58 apr_pool_t *p = r->pool; /* memory pool */
59 char* arg = r->args; /* url query string */
61 char* service = NULL; /* service to connect to */
62 char* method = NULL; /* method to perform */
64 //json* exception = NULL; /* returned in error conditions */
65 object* exception = NULL; /* returned in error conditions */
66 string_array* sarray = init_string_array(12); /* method parameters */
68 growing_buffer* buffer = NULL; /* POST data */
69 growing_buffer* tmp_buf = NULL; /* temp buffer */
71 char* key = NULL; /* query item name */
72 char* val = NULL; /* query item value */
76 /* verify we are connected */
77 if(!osrf_system_get_transport_client()) {
78 fatal_handler("Bootstrap Failed, no transport client");
79 return HTTP_INTERNAL_SERVER_ERROR;
84 /* gather the post args and append them to the url query string */
85 if( !strcmp(r->method,"POST") ) {
87 ap_setup_client_block(r,REQUEST_CHUNKED_DECHUNK);
89 if(! ap_should_client_block(r)) {
90 warning_handler("No Post Body");
95 buffer = buffer_init(1025);
97 while(ap_get_client_block(r, body, 1024)) {
98 debug_handler("Apache read POST block data: %s\n", body);
99 buffer_add( buffer, body );
104 tmp_buf = buffer_init(1024);
105 buffer_add(tmp_buf,arg);
106 buffer_add(tmp_buf,buffer->buf);
107 arg = (char*) apr_pstrdup(p, tmp_buf->buf);
108 buffer_free(tmp_buf);
110 arg = (char*) apr_pstrdup(p, buffer->buf);
116 debug_handler("params args are %s", arg);
119 if( ! arg || !arg[0] ) { /* we received no request */
120 warning_handler("No Args");
124 r->allowed |= (AP_METHOD_BIT << M_GET);
125 r->allowed |= (AP_METHOD_BIT << M_POST);
128 while( arg && (val = ap_getword(p, (const char**) &arg, '&'))) {
130 key = ap_getword(r->pool, (const char**) &val, '=');
134 ap_unescape_url((char*)key);
135 ap_unescape_url((char*)val);
137 if(!strcmp(key,"service"))
140 if(!strcmp(key,"method"))
143 if(!strcmp(key,"param"))
144 string_array_add(sarray, val);
148 info_handler("Performing(%d): service %s | method %s | \n",
149 getpid(), service, method );
152 for( k = 0; k!= sarray->size; k++ ) {
153 info_handler( "param %s", string_array_get_string(sarray,k));
156 osrf_app_session* session = osrf_app_client_session_init(service);
158 debug_handler("MOD session service: %s", session->remote_service );
160 int req_id = osrf_app_session_make_req( session, NULL, method, 1, sarray );
161 string_array_destroy(sarray);
163 osrf_message* omsg = NULL;
165 growing_buffer* result_data = buffer_init(256);
166 buffer_add(result_data, "[");
168 /* gather result data */
169 while((omsg = osrf_app_session_request_recv( session, req_id, 60 ))) {
171 if( omsg->_result_content ) {
172 char* content = object_to_json(omsg->_result_content);
173 buffer_add(result_data, content);
174 buffer_add( result_data, ",");
180 /* build the exception information */
181 growing_buffer* exc_buffer = buffer_init(256);
182 buffer_add( exc_buffer, "\nReceived Exception:\nName: " );
183 buffer_add( exc_buffer, omsg->status_name );
184 buffer_add( exc_buffer, "\nStatus: " );
185 buffer_add( exc_buffer, omsg->status_text );
186 buffer_add( exc_buffer, "\nStatus: " );
190 sprintf( code, "%d", omsg->status_code );
191 buffer_add( exc_buffer, code );
193 exception = json_parse_string("{}");
194 exception->add_key(exception, "is_err", json_parse_string("1"));
195 exception->add_key(exception, "err_msg", new_object(exc_buffer->buf) );
197 warning_handler("*** Looks like we got a "
198 "server exception\n%s", exc_buffer->buf );
200 buffer_free(exc_buffer);
201 osrf_message_free(omsg);
205 osrf_message_free(omsg);
209 /* remove trailing comma */
210 if( result_data->buf[strlen(result_data->buf)-1] == ',') {
211 result_data->buf[strlen(result_data->buf)-1] = '\0';
212 result_data->n_used--;
215 buffer_add(result_data,"]");
217 char* content = NULL;
220 content = exception->to_json(exception);
221 free_object(exception);
225 /* set content type to text/xml for passing around XML objects */
226 ap_set_content_type(r, "text/xml");
227 if(content) { /* exception... */
229 content = json_string_to_xml( tmp );
232 content = json_string_to_xml( result_data->buf );
236 /* set content type to text/plain for passing around JSON objects */
238 ap_set_content_type(r, "text/plain");
239 content = buffer_data(result_data);
244 buffer_free(result_data);
247 debug_handler( "APACHE writing data to web client: %s", content );
252 osrf_app_session_request_finish( session, req_id );
253 debug_handler("gateway process message successfully");
256 osrf_app_session_destroy(session);
261 static void mod_ils_gateway_register_hooks (apr_pool_t *p) {
262 ap_hook_handler(mod_ils_gateway_method_handler, NULL, NULL, APR_HOOK_MIDDLE);
263 ap_hook_child_init(mod_ils_gateway_child_init,NULL,NULL,APR_HOOK_MIDDLE);
268 module AP_MODULE_DECLARE_DATA ils_rest_gateway_module = {
270 module AP_MODULE_DECLARE_DATA ils_gateway_module = {
272 STANDARD20_MODULE_STUFF,
275 ils_gateway_create_config,
278 mod_ils_gateway_register_hooks,
285 module AP_MODULE_DECLARE_DATA ils_rest_gateway_module =
287 STANDARD20_MODULE_STUFF,
290 ils_gateway_create_config,
293 mod_ils_gateway_register_hooks,
298 module AP_MODULE_DECLARE_DATA ils_gateway_module =
300 STANDARD20_MODULE_STUFF,
303 ils_gateway_create_config,
306 mod_ils_gateway_register_hooks,