--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sim/Connectivity.cc	Thu Apr 21 14:57:45 2011 +0100
@@ -0,0 +1,177 @@
+/*
+ *    Copyright 2005-2006 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 <oasys/util/OptParser.h>
+#include <oasys/util/StringBuffer.h>
+
+#include "Connectivity.h"
+#include "Node.h"
+#include "SimEvent.h"
+#include "SimConvergenceLayer.h"
+#include "Topology.h"
+
+#include "contacts/ContactManager.h"
+#include "contacts/Link.h"
+#include "naming/EndpointID.h"
+
+namespace dtnsim {
+
+//----------------------------------------------------------------------
+Connectivity* Connectivity::instance_(NULL);
+std::string   Connectivity::type_("");
+
+//----------------------------------------------------------------------
+Connectivity::Connectivity()
+    : Logger("Connectivity", "/sim/conn")
+{
+}
+
+//----------------------------------------------------------------------
+Connectivity*
+Connectivity::create_conn()
+{
+    ASSERT(type_ != "");
+
+    if (type_ == "static") {
+        // just the base class
+        return new Connectivity(); 
+    } else {
+        log_crit_p("/connectivity", "invalid connectivity module type %s",
+                   type_.c_str());
+        return NULL;
+    }
+}
+
+//----------------------------------------------------------------------
+bool
+ConnState::parse_time(const char* time_str, double* time)
+{
+    char* end;
+    *time = strtod(time_str, &end);
+
+    if (end == time_str)
+        return false;
+
+    if (!strcmp(end, "us")) {
+        *time = *time / 1000000.0;
+        return true;
+        
+    } else if (!strcmp(end, "ms")) {
+        *time = *time / 1000.0;
+        return true;
+
+    } else if (!strcmp(end, "s")) {
+        return true;
+
+    } else if (!strcmp(end, "min")) {
+        *time = *time * 60;
+        return true;
+
+    } else if (!strcmp(end, "hr")) {
+        *time = *time * 3600;
+        return true;
+
+    } else {
+        return false;
+    }
+}
+
+//----------------------------------------------------------------------
+bool
+ConnState::parse_options(int argc, const char** argv, const char** invalidp)
+{
+    oasys::OptParser p;
+    std::string latency_str;
+
+    p.addopt(new oasys::RateOpt("bw", &bw_));
+    p.addopt(new oasys::StringOpt("latency", &latency_str));
+
+    if (! p.parse(argc, argv, invalidp)) {
+        return false;
+    }
+
+    if (latency_str != "" && !parse_time(latency_str.c_str(), &latency_)) {
+        *invalidp = strdup(latency_str.c_str()); // leak!
+        return false;
+    }
+
+    return true;
+}
+
+//----------------------------------------------------------------------
+void
+Connectivity::set_state(const char* n1, const char* n2, const ConnState& s)
+{
+    log_debug("set state %s,%s: %s bw=%llu latency=%f",
+              n1, n2, s.open_ ? "up" : "down", U64FMT(s.bw_), s.latency_);
+    
+    // handle wildcards
+    if (!strcmp(n1, "*")) {
+        Topology::NodeTable* nodes = Topology::node_table();
+        
+        for (Topology::NodeTable::iterator iter = nodes->begin();
+             iter != nodes->end(); ++iter)
+        {
+            if (strcmp(iter->second->name(), n2) != 0) {
+                set_state(iter->second->name(), n2, s);
+            }
+        }
+        return;
+    }
+
+    if (!strcmp(n2, "*")) {
+        Topology::NodeTable* nodes = Topology::node_table();
+        
+        for (Topology::NodeTable::iterator iter = nodes->begin();
+             iter != nodes->end(); ++iter)
+        {
+            if (strcmp(n1, iter->second->name()) != 0) {
+                set_state(n1, iter->second->name(), s);
+            }
+        }
+        return;
+    }
+    
+    oasys::StringBuffer key("%s,%s", n1, n2);
+    StateTable::iterator iter = state_.find(key.c_str());
+    if (iter != state_.end()) {
+        iter->second = s;
+    } else {
+        state_[key.c_str()] = s;
+    }
+    
+    SimConvergenceLayer::instance()->
+        update_connectivity(Topology::find_node(n1),
+                            Topology::find_node(n2), s);
+}
+
+//----------------------------------------------------------------------
+const ConnState*
+Connectivity::lookup(Node* n1, Node* n2)
+{
+    oasys::StringBuffer key("%s,%s", n1->name(), n2->name());
+    StateTable::iterator iter = state_.find(key.c_str());
+    if (iter == state_.end()) {
+        return NULL;
+    }
+    return &iter->second;
+}
+
+} // namespace dtnsim