Added HandlerSocket plugin

- Fixed compiler errors
- Modified Makefiles to be part of plugin directory
- Some minor changes in database.cpp to use the new MariaDB handler interface

plugin/handler_socket/libhsclient/hstcpcli.hpp

@@ -0,0 +1,59 @@
+
+// vim:sw=2:ai
+
+/*
+ * Copyright (C) 2010 DeNA Co.,Ltd.. All rights reserved.
+ * See COPYRIGHT.txt for details.
+ */
+
+#ifndef DENA_HSTCPCLI_HPP
+#define DENA_HSTCPCLI_HPP
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <string>
+#include <memory>
+
+#include "config.hpp"
+#include "socket.hpp"
+#include "string_ref.hpp"
+#include "string_buffer.hpp"
+
+namespace dena {
+
+struct hstcpcli_filter {
+  string_ref filter_type;
+  string_ref op;
+  size_t ff_offset;
+  string_ref val;
+  hstcpcli_filter() : ff_offset(0) { }
+};
+
+struct hstcpcli_i;
+typedef std::auto_ptr<hstcpcli_i> hstcpcli_ptr;
+
+struct hstcpcli_i {
+  virtual ~hstcpcli_i() { }
+  virtual void close() = 0;
+  virtual int reconnect() = 0;
+  virtual bool stable_point() = 0;
+  virtual void request_buf_open_index(size_t pst_id, const char *dbn,
+    const char *tbl, const char *idx, const char *retflds,
+    const char *filflds = 0) = 0;
+  virtual void request_buf_exec_generic(size_t pst_id, const string_ref& op,
+    const string_ref *kvs, size_t kvslen, uint32_t limit, uint32_t skip,
+    const string_ref& mod_op, const string_ref *mvs, size_t mvslen,
+    const hstcpcli_filter *fils = 0, size_t filslen = 0) = 0;
+  virtual int request_send() = 0;
+  virtual int response_recv(size_t& num_flds_r) = 0;
+  virtual const string_ref *get_next_row() = 0;
+  virtual void response_buf_remove() = 0;
+  virtual int get_error_code() = 0;
+  virtual std::string get_error() = 0;
+  static hstcpcli_ptr create(const socket_args& args);
+};
+
+};
+
+#endif
+