TcaRegistry.h

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00001 /*
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00038 
00039 #ifndef _TCA_REGISTRY_H_
00040 #define _TCA_REGISTRY_H_
00041 
00042 #include <netinet/in.h>
00043 #include <string>
00044 #include <vector>
00045 #include <rpc/rpc.h>
00046 
00047 
00048 
00049 class RegRecord
00050 {
00051 public:
00052     RegRecord() : host_(), link_addr_() { }
00053 
00054     RegRecord(const std::string& host, const std::string& link_addr)
00055         : host_(host), link_addr_(link_addr) { }
00056 
00057     std::string     host_;          // partial eid, eg.  "tca://host"
00058     std::string     link_addr_;
00059 
00060     const std::string str() const { return host_ + " -> " + link_addr_; }
00061 };
00062 
00063 
00064 
00065 class TcaRegistry
00066 {
00067 public:
00068 
00069     TcaRegistry() : last_node_(0) { }
00070 
00071     bool init_nodes();
00072     bool init_addrs();
00073 
00074     bool write(const RegRecord& rr, int ttl);
00075     bool read(RegRecord& rr);
00076 
00077 protected:
00078 
00079     std::vector<std::string> dht_nodes_;    // all available node names
00080     std::vector<sockaddr_in> dht_addrs_;    // all available node addrs
00081 
00082     unsigned int last_node_;                // index of last node used
00083 
00084     CLIENT* get_node(); // get next available node, starting at cur_node_
00085 
00086 };
00087 
00088 
00089 #endif /* _TCA_REGISTRY_H_ */

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