jk_config.c

Tomcat 4.1与WebServer集成组件的源代码包.

    }
    if( strcmp( name, "info" ) == 0 ) {
        /* do nothing, this is a comment */
        return JK_OK;
    }

    if( (mbean == cfg->mbean) &&
        (strcmp( name, "file" ) == 0 ) &&
        cfg->file != NULL ) {
        /* 'file' property on ourself, avoid rec.
         */
        if( cfg->mbean->debug > 0 )
            env->l->jkLog(env, env->l, JK_LOG_DEBUG,
                          "config.setAttribute() ignore %s %s %s\n", mbean->name, name, val );
        
        return JK_OK;
    }
    
    if(mbean->setAttribute) {
        int rc= mbean->setAttribute( env, mbean, name, val );
        if( rc != JK_OK ) {
            env->l->jkLog(env, env->l, JK_LOG_INFO,
                          "config.setAttribute() Error setting %s %s %s\n", mbean->name, name, val );
        }
        if( cfg->mbean->debug > 0 ) 
            env->l->jkLog(env, env->l, JK_LOG_DEBUG,
                          "config.setAttribute() %d setting %s %s %s\n",
                          cfg->mbean->debug, mbean->name, name, val );
        return rc;
    }
    return JK_ERR;
}

int jk2_config_setPropertyString(jk_env_t *env, jk_config_t *cfg,
                                 char *name, char *value)
{
    jk_bean_t *mbean;

    jk_workerEnv_t *wEnv=cfg->workerEnv;
    jk_map_t *initData=cfg->map;
    int status;
    char *objName=NULL;
    char *propName=NULL;
    
    /* fprintf( stderr, "setPropertyString %s %s \n", name, value ); */

    status=jk2_config_processBeanPropertyString(env, cfg, name, &objName, &propName );
    if( status!=JK_OK ) {
        /* Unknown properties ends up in our config, as 'unclaimed' or global */
        cfg->setProperty( env, cfg, cfg->mbean, name, value );
        return status;
    }

    /** Replace properties in the object name */
    objName = jk2_config_replaceProperties(env, cfg->map, cfg->map->pool, objName);

    mbean=env->getBean( env, objName );
    if( mbean==NULL ) {
        mbean=env->createBean( env, cfg->pool, objName );
    }

    if( mbean == NULL ) {
        /* Can't create it, save the value in our map */
        cfg->setProperty( env, cfg, cfg->mbean, name, value );
        return JK_ERR;
    }

    if( mbean->settings == NULL )
        jk2_map_default_create(env, &mbean->settings, cfg->pool);
    
    return cfg->setProperty( env, cfg, mbean, propName, value );
}



/**
 *  Replace $(property) in value.
 * 
 */
char *jk2_config_replaceProperties(jk_env_t *env, jk_map_t *m,
                                   struct jk_pool *resultPool, 
                                   char *value)
{
    char *rc;
    char *env_start;
    int rec = 0;
    int didReplace=JK_FALSE;
    rc = value;
    env_start = value;

    while(env_start = strstr(env_start, "${")) {
        char *env_end = strstr(env_start, "}");
        if( rec++ > 20 ) return rc;
        if(env_end) {
            char env_name[LENGTH_OF_LINE + 1] = ""; 
            char *env_value;

            strncpy(env_name, env_start + 2, (env_end-env_start)-2);

            env_value = m->get(env, m, env_name);
	    if(env_value == NULL ) {
	      env_value=getenv( env_name );
	    }
            /* fprintf(stderr, "XXXjk_map %s %s \n", env_name, env_value ); */

            if(env_value != NULL ) {
                int offset=0;
                /* tmp allocations in tmpPool */
                char *new_value = env->tmpPool->calloc(env, env->tmpPool, 
                                                       (strlen(rc) + strlen(env_value)));
                if(!new_value) {
                    break;
                }
                if( env_start == rc ) {
                    new_value[0]='\0';
                } else {
                    strncpy(new_value, rc, env_start-rc);
                }
                /* fprintf(stderr, "XXX %s %s %s\n", new_value, env_value, env_end + 1 ); */

                strcat(new_value, env_value);
                strcat(new_value, env_end + 1);
		offset= env_start - rc + strlen( env_value );
                rc = new_value;
		/* Avoid recursive subst */
                env_start = rc + offset;
                didReplace=JK_TRUE;
            } else {
                env_start = env_end;
            }
        } else {
            break;
        }
    }
    
    if( didReplace && resultPool!=NULL && resultPool != env->tmpPool ) {
        /* Make sure the result is allocated in the right mempool.
           tmpPool will be reset for each request.
        */
        rc=resultPool->pstrdup( env, resultPool, rc );
    }

    return rc;
}

/* -------------------- Reconfiguration -------------------- */

/** cfgData has component names as keys and a map of attributes as value.
 *  We'll create the beans and call the setters.
 *  If this is not firstTime, we create new componens and modify those
 *  with a lower 'ver'.
 *
 *  Note that _no_ object can be ever destroyed. You can 'disable' them,
 *  but _never_ remove/destroy it. We work in a multithreaded environment,
 *  and any removal may have disastrous consequences. Using critical
 *  sections would drastically affect the performance.
 */
int jk2_config_processConfigData(jk_env_t *env, jk_config_t *cfg,int firstTime )
{
    int i;
    int rc;
    
    for( i=0; i<cfg->cfgData->size( env, cfg->cfgData ); i++ ) {
        char *name=cfg->cfgData->nameAt(env, cfg->cfgData, i);
        rc=cfg->processNode(env, cfg , name, firstTime);
    }
    return rc;
}

int jk2_config_processNode(jk_env_t *env, jk_config_t *cfg, char *name, int firstTime )
{
    int j;   
    
    jk_map_t *prefNode=cfg->cfgData->get(env, cfg->cfgData, name);
    jk_bean_t *bean;
    int ver;
    char *verString;

    if( cfg->mbean->debug > 5 ) 
    env->l->jkLog(env, env->l, JK_LOG_DEBUG, 
                  "config.setConfig():  process %s\n", name );
    
    bean=env->getBean( env, name );
    if( bean==NULL ) {
        if( cfg->mbean->debug > 0 ) {
            env->l->jkLog(env, env->l, JK_LOG_DEBUG, 
                          "config.setConfig():  Creating %s\n", name );
        }
        bean=env->createBean( env, cfg->pool, name );
    }

    if( bean == NULL ) {
        /* Can't create it, save the value in our map */
        env->l->jkLog(env, env->l, JK_LOG_ERROR,
                      "config.update(): Can't create %s\n", name );
        return JK_ERR;
    }

    verString= prefNode->get( env, prefNode, "ver" );
    if( !firstTime ) {
        if( verString == NULL ) {
            return JK_OK;
        }
        ver=atoi( verString );
        
        if( ver <= bean->ver) {
            /* Object didn't change
             */
            return JK_OK;
        }
    }
    
    if( !firstTime )
        env->l->jkLog(env, env->l, JK_LOG_INFO,
                      "config.update(): Updating %s\n", name );
    
    /* XXX Maybe we shoud destroy/init ? */
    
    for( j=0; j<prefNode->size( env, prefNode ); j++ ) {
        char *pname=prefNode->nameAt(env, prefNode, j);
        char *pvalue=prefNode->valueAt(env, prefNode, j);

        cfg->setProperty( env, cfg, bean, pname, pvalue );
    }

    return JK_OK;
}