OpenSRF/src/c-apps/osrf_version.c

   1 #include "opensrf/osrf_app_session.h"
   2 #include "opensrf/osrf_application.h"
   3 #include "objson/object.h"
   4 #include "opensrf/utils.h"
   5 #include "opensrf/osrf_log.h"
   6
   7 #define OSRF_VERSION_CACHE_TIME 300
   8
   9 int osrfAppInitialize();
  10 int osrfAppChildInit();
  11 int osrfVersion( osrfMethodContext* );
  12
  13
  14 int osrfAppInitialize() {
  15         osrfLogInit("opensrf.version");
  16
  17         osrfAppRegisterMethod(
  18                         "opensrf.version",
  19                         "opensrf.version.verify",
  20                         "osrfVersion",
  21                         "The data for a service/method/params combination will be retrieved "
  22                         "from the necessary server and the MD5 sum of the total values received "
  23                         "will be returned",
  24                         "( serviceName, methodName, [param1, ...] )", 2 );
  25
  26         return 0;
  27 }
  28
  29 int osrfAppChildInit() {
  30         return 0;
  31 }
  32
  33 int osrfVersion( osrfMethodContext* ctx ) {
  34
  35         OSRF_METHOD_VERIFY_CONTEXT(ctx);
  36
  37         /* First, see if the data is in the cache */
  38         char* json = jsonObjectToJSON(ctx->params);
  39         char* paramsmd5 = md5sum(json);
  40         char* cachedmd5 = osrfCacheGetString(paramsmd5);
  41         free(json);
  42
  43         if( cachedmd5 ) {
  44                 osrfLog( OSRF_DEBUG, "Found %s object in cache, returning....", cachedmd5 );
  45                 jsonObject* resp = jsonNewObject(cachedmd5);
  46                 osrfAppRequestRespondComplete( ctx->session, ctx->request, resp  );
  47                 jsonObjectFree(resp);
  48                 free(paramsmd5);
  49                 free(cachedmd5);
  50                 return 0;
  51         }
  52
  53         jsonObject* serv = jsonObjectGetIndex(ctx->params, 0);
  54         jsonObject* meth = jsonObjectGetIndex(ctx->params, 1);
  55         char* service = jsonObjectGetString(serv);
  56         char* methd = jsonObjectGetString(meth);
  57
  58         if( service && methd ) {
  59                 /* shove the additional params into an array */
  60                 jsonObject* tmpArray = jsonNewObject(NULL);
  61                 int i;
  62                 for( i = 2; i != ctx->params->size; i++ )
  63                         jsonObjectPush( tmpArray, jsonObjectClone(jsonObjectGetIndex(ctx->params, i)));
  64
  65                 osrfAppSession* ses = osrfAppSessionClientInit(service);
  66                 int reqid = osrfAppSessionMakeRequest( ses, tmpArray, methd, 1, NULL );
  67                 osrfMessage* omsg = osrfAppSessionRequestRecv( ses, reqid, 60 );
  68                 jsonObjectFree(tmpArray);
  69
  70                 if( omsg ) {
  71
  72                         jsonObject* result = osrfMessageGetResult( omsg );
  73                         char* resultjson = jsonObjectToJSON(result);
  74                         char* resultmd5 = md5sum(resultjson);
  75                         free(resultjson);
  76                         osrfMessageFree(omsg);
  77
  78                         if( resultmd5 ) {
  79                                 jsonObject* resp = jsonNewObject(resultmd5);
  80                                 osrfAppRequestRespondComplete( ctx->session, ctx->request, resp );
  81                                 jsonObjectFree(resp);
  82                                 osrfAppSessionFree(ses);
  83                                 osrfLog(OSRF_DEBUG, "Found version string %s, caching and returning...", resultmd5 );
  84                                 osrfCachePutString( paramsmd5, resultmd5, OSRF_VERSION_CACHE_TIME );
  85                                 free(resultmd5);
  86                                 free(paramsmd5);
  87                                 return 0;
  88                         }
  89                 }
  90                 osrfAppSessionFree(ses);
  91         }
  92
  93         free(paramsmd5);
  94
  95         return -1;
  96 }
  97
  98
  99