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/client/hsclient.cpp

@@ -0,0 +1,88 @@
+
+// vim:sw=2:ai
+
+#include "hstcpcli.hpp"
+#include "string_util.hpp"
+
+namespace dena {
+
+int
+hstcpcli_main(int argc, char **argv)
+{
+  config conf;
+  parse_args(argc, argv, conf);
+  socket_args sockargs;
+  sockargs.set(conf);
+  hstcpcli_ptr cli = hstcpcli_i::create(sockargs);
+  const std::string dbname = conf.get_str("dbname", "hstest");
+  const std::string table = conf.get_str("table", "hstest_table1");
+  const std::string index = conf.get_str("index", "PRIMARY");
+  const std::string fields = conf.get_str("fields", "k,v");
+  const int limit = conf.get_int("limit", 0);
+  const int skip = conf.get_int("skip", 0);
+  std::vector<std::string> keys;
+  std::vector<string_ref> keyrefs;
+  size_t num_keys = 0;
+  while (true) {
+    const std::string conf_key = std::string("k") + to_stdstring(num_keys);
+    const std::string k = conf.get_str(conf_key, "");
+    const std::string kx = conf.get_str(conf_key, "x");
+    if (k.empty() && kx == "x") {
+      break;
+    }
+    ++num_keys;
+    keys.push_back(k);
+  }
+  for (size_t i = 0; i < keys.size(); ++i) {
+    const string_ref ref(keys[i].data(), keys[i].size());
+    keyrefs.push_back(ref);
+  }
+  const std::string op = conf.get_str("op", "=");
+  const string_ref op_ref(op.data(), op.size());
+  cli->request_buf_open_index(0, dbname.c_str(), table.c_str(),
+    index.c_str(), fields.c_str());
+  cli->request_buf_exec_generic(0, op_ref, num_keys == 0 ? 0 : &keyrefs[0],
+    num_keys, limit, skip, string_ref(), 0, 0);
+  int code = 0;
+  size_t numflds = 0;
+  do {
+    if (cli->request_send() != 0) {
+      fprintf(stderr, "request_send: %s\n", cli->get_error().c_str());
+      break;
+    }
+    if ((code = cli->response_recv(numflds)) != 0) {
+      fprintf(stderr, "response_recv: %s\n", cli->get_error().c_str());
+      break;
+    }
+  } while (false);
+  cli->response_buf_remove();
+  do {
+    if ((code = cli->response_recv(numflds)) != 0) {
+      fprintf(stderr, "response_recv: %s\n", cli->get_error().c_str());
+      break;
+    }
+    while (true) {
+      const string_ref *const row = cli->get_next_row();
+      if (row == 0) {
+	break;
+      }
+      printf("REC:");
+      for (size_t i = 0; i < numflds; ++i) {
+	const std::string val(row[i].begin(), row[i].size());
+	printf(" %s", val.c_str());
+      }
+      printf("\n");
+    }
+  } while (false);
+  cli->response_buf_remove();
+  return 0;
+}
+
+};
+
+int
+main(int argc, char **argv)
+{
+  return dena::hstcpcli_main(argc, argv);
+}
+