servlib/reg/RegistrationTable.cc
changeset 0 2b3e5ec03512
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/servlib/reg/RegistrationTable.cc	Thu Apr 21 14:57:45 2011 +0100
@@ -0,0 +1,234 @@
+/*
+ *    Copyright 2004-2006 Intel Corporation
+ * 
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ * 
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include <dtn-config.h>
+#endif
+
+#include "APIRegistration.h"
+#include "RegistrationTable.h"
+#include "bundling/BundleEvent.h"
+#include "bundling/BundleDaemon.h"
+#include "storage/RegistrationStore.h"
+
+namespace dtn {
+
+//----------------------------------------------------------------------
+RegistrationTable::RegistrationTable()
+    : Logger("RegistrationTable", "/dtn/registration/table")
+{
+}
+
+//----------------------------------------------------------------------
+RegistrationTable::~RegistrationTable()
+{
+    while (! reglist_.empty()) {
+        delete reglist_.front();
+        reglist_.pop_front();
+    }
+}
+
+//----------------------------------------------------------------------
+bool
+RegistrationTable::find(u_int32_t regid, RegistrationList::iterator* iter)
+{
+    Registration* reg;
+
+    for (*iter = reglist_.begin(); *iter != reglist_.end(); ++(*iter)) {
+        reg = *(*iter);
+
+        if (reg->regid() == regid) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+//----------------------------------------------------------------------
+Registration*
+RegistrationTable::get(u_int32_t regid) const
+{
+    oasys::ScopeLock l(&lock_, "RegistrationTable");
+
+    RegistrationList::iterator iter;
+
+    // the const_cast lets us use the same find method for get as we
+    // use for add/del
+    if (const_cast<RegistrationTable*>(this)->find(regid, &iter)) {
+        return *iter;
+    }
+    return NULL;
+}
+
+//----------------------------------------------------------------------
+Registration*
+RegistrationTable::get(const EndpointIDPattern& eid) const
+{
+    Registration* reg;
+    RegistrationList::const_iterator iter;
+    
+    for (iter = reglist_.begin(); iter != reglist_.end(); ++iter) {
+        reg = *iter;
+        if (reg->endpoint().equals(eid)) {
+            return reg;
+        }
+    }
+    
+    return NULL;
+}
+
+//----------------------------------------------------------------------
+bool
+RegistrationTable::add(Registration* reg, bool add_to_store)
+{
+    oasys::ScopeLock l(&lock_, "RegistrationTable");
+
+    // put it in the list
+    reglist_.push_back(reg);
+
+    // don't store (or log) default registrations 
+    if (!add_to_store || reg->regid() <= Registration::MAX_RESERVED_REGID) {
+        return true;
+    }
+
+    // now, all we should get are API registrations
+    APIRegistration* api_reg = dynamic_cast<APIRegistration*>(reg);
+    if (api_reg == NULL) {
+        log_err("non-api registration %d passed to registration store",
+                reg->regid());
+        return false;
+    }
+    
+    log_info("adding registration %d/%s", reg->regid(),
+             reg->endpoint().c_str());
+    
+    if (! RegistrationStore::instance()->add(api_reg)) {
+        log_err("error adding registration %d/%s: error in persistent store",
+                reg->regid(), reg->endpoint().c_str());
+        return false;
+    }
+    
+    return true;
+}
+
+//----------------------------------------------------------------------
+bool
+RegistrationTable::del(u_int32_t regid)
+{
+    oasys::ScopeLock l(&lock_, "RegistrationTable");
+
+    RegistrationList::iterator iter;
+
+    log_info("removing registration %d", regid);
+    
+    if (! find(regid, &iter)) {
+        log_err("error removing registration %d: no matching registration",
+                regid);
+        return false;
+    }
+
+    if (! RegistrationStore::instance()->del(regid)) {
+        log_err("error removing registration %d: error in persistent store",
+                regid);
+        return false;
+    }
+
+    reglist_.erase(iter);
+
+    return true;
+}
+
+//----------------------------------------------------------------------
+bool
+RegistrationTable::update(Registration* reg)
+{
+    oasys::ScopeLock l(&lock_, "RegistrationTable");
+
+    log_info("updating registration %d/%s",
+             reg->regid(), reg->endpoint().c_str());
+
+    APIRegistration* api_reg = dynamic_cast<APIRegistration*>(reg);
+    if (api_reg == NULL) {
+        log_err("non-api registration %d passed to registration store",
+                reg->regid());
+        return false;
+    }
+    
+    if (! RegistrationStore::instance()->update(api_reg)) {
+        log_err("error updating registration %d/%s: error in persistent store",
+                reg->regid(), reg->endpoint().c_str());
+        return false;
+    }
+
+    return true;
+}
+
+//----------------------------------------------------------------------
+int
+RegistrationTable::get_matching(const EndpointID& demux,
+                                RegistrationList* reg_list) const
+{
+    oasys::ScopeLock l(&lock_, "RegistrationTable");
+
+    int count = 0;
+    
+    RegistrationList::const_iterator iter;
+    Registration* reg;
+
+    log_debug("get_matching %s", demux.c_str());
+
+    for (iter = reglist_.begin(); iter != reglist_.end(); ++iter) {
+        reg = *iter;
+
+        if (reg->endpoint().match(demux)) {
+            log_debug("matched registration %d %s",
+                      reg->regid(), reg->endpoint().c_str());
+            count++;
+            reg_list->push_back(reg);
+        }
+    }
+
+    log_debug("get_matching %s: returned %d matches", demux.c_str(), count);
+    return count;
+}
+
+
+void
+RegistrationTable::dump(oasys::StringBuffer* buf) const
+{
+    oasys::ScopeLock l(&lock_, "RegistrationTable");
+
+    RegistrationList::const_iterator i;
+    for (i = reglist_.begin(); i != reglist_.end(); ++i)
+    {
+        buf->appendf("*%p\n", *i);
+    }
+}
+
+/**
+ * Return the routing table.  Asserts that the RegistrationTable
+ * spin lock is held by the caller.
+ */
+const RegistrationList *
+RegistrationTable::reg_list() const
+{
+    ASSERTF(lock_.is_locked_by_me(),
+            "RegistrationTable::reg_list must be called while holding lock");
+    return &reglist_;
+}
+
+} // namespace dtn