Add memcached_exist()

[awesomized/libmemcached] / clients / memexist.cc

diff --git a/clients/memexist.cc b/clients/memexist.cc
new file mode 100644 (file)
index 0000000..20ad485
--- /dev/null
+++ b/clients/memexist.cc
@@ -0,0 +1,236 @@
+/* LibMemcached
+ * Copyright (C) 2006-2009 Brian Aker
+ * All rights reserved.
+ *
+ * Use and distribution licensed under the BSD license.  See
+ * the COPYING file in the parent directory for full text.
+ *
+ * Summary:
+ *
+ */
+#include "config.h"
+
+#include <cstdio>
+#include <cstring>
+#include <getopt.h>
+#include <iostream>
+#include <unistd.h>
+
+#include <libmemcached/memcached.h>
+#include "client_options.h"
+#include "utilities.h"
+
+static int opt_binary= 0;
+static int opt_verbose= 0;
+static char *opt_servers= NULL;
+static char *opt_hash= NULL;
+static char *opt_username;
+static char *opt_passwd;
+
+#define PROGRAM_NAME "memexist"
+#define PROGRAM_DESCRIPTION "Erase a key or set of keys from a memcached cluster."
+
+/* Prototypes */
+static void options_parse(int argc, char *argv[]);
+
+int main(int argc, char *argv[])
+{
+  memcached_st *memc;
+  memcached_server_st *servers;
+
+  options_parse(argc, argv);
+  initialize_sockets();
+
+  if (opt_servers == 0)
+  {
+    char *temp;
+
+    if ((temp= getenv("MEMCACHED_SERVERS")))
+    {
+      opt_servers= strdup(temp);
+    }
+    else
+    {
+      std::cerr << "No Servers provided" << std::endl;
+      return EXIT_FAILURE;
+    }
+  }
+
+  memc= memcached_create(NULL);
+  process_hash_option(memc, opt_hash);
+
+  servers= memcached_servers_parse(opt_servers);
+  memcached_server_push(memc, servers);
+  memcached_server_list_free(servers);
+  memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL,
+                         (uint64_t) opt_binary);
+
+  if (opt_username and LIBMEMCACHED_WITH_SASL_SUPPORT == 0)
+  {
+    memcached_free(memc);
+    std::cerr << "--username was supplied, but binary was not built with SASL support." << std::endl;
+    return EXIT_FAILURE;
+  }
+
+  if (opt_username)
+  {
+    memcached_return_t ret;
+    if (memcached_failed(ret= memcached_set_sasl_auth_data(memc, opt_username, opt_passwd)))
+    {
+      std::cerr << memcached_last_error_message(memc) << std::endl;
+      memcached_free(memc);
+      return EXIT_FAILURE;
+    }
+  }
+
+  int return_code= EXIT_SUCCESS;
+
+  while (optind < argc)
+  {
+    memcached_return_t rc= memcached_exist(memc, argv[optind], strlen(argv[optind]));
+
+    if (rc == MEMCACHED_NOTFOUND)
+    {
+      if (opt_verbose)
+      {
+        std::cout << "Could not find key \"" << argv[optind] << "\"" << std::endl;
+      }
+
+      return_code= EXIT_FAILURE;
+    }
+    else if (memcached_failed(rc))
+    {
+      if (opt_verbose)
+      {
+        std::cerr << "Fatal error for key \"" << argv[optind] << "\" :" <<  memcached_last_error_message(memc) << std::endl;
+      }
+
+      return_code= EXIT_FAILURE;
+    }
+    else // success
+    {
+      if (opt_verbose)
+      {
+        std::cout << "Found key " << argv[optind] << std::endl;
+      }
+    }
+
+    optind++;
+  }
+
+  memcached_free(memc);
+
+  if (opt_servers)
+  {
+    free(opt_servers);
+  }
+
+  if (opt_hash)
+  {
+    free(opt_hash);
+  }
+
+  return return_code;
+}
+
+
+static void options_parse(int argc, char *argv[])
+{
+  memcached_programs_help_st help_options[]=
+  {
+    {0},
+  };
+
+  static struct option long_options[]=
+  {
+    {(OPTIONSTRING)"version", no_argument, NULL, OPT_VERSION},
+    {(OPTIONSTRING)"help", no_argument, NULL, OPT_HELP},
+    {(OPTIONSTRING)"quiet", no_argument, NULL, OPT_QUIET},
+    {(OPTIONSTRING)"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
+    {(OPTIONSTRING)"debug", no_argument, &opt_verbose, OPT_DEBUG},
+    {(OPTIONSTRING)"servers", required_argument, NULL, OPT_SERVERS},
+    {(OPTIONSTRING)"hash", required_argument, NULL, OPT_HASH},
+    {(OPTIONSTRING)"binary", no_argument, NULL, OPT_BINARY},
+    {(OPTIONSTRING)"username", required_argument, NULL, OPT_USERNAME},
+    {(OPTIONSTRING)"password", required_argument, NULL, OPT_PASSWD},
+    {0, 0, 0, 0},
+  };
+
+  bool opt_version= false;
+  bool opt_help= false;
+  int option_index= 0;
+
+  while (1)
+  {
+    int option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
+    if (option_rv == -1) 
+    {
+      break;
+    }
+
+    switch (option_rv)
+    {
+    case 0:
+      break;
+
+    case OPT_BINARY:
+      opt_binary = 1;
+      break;
+
+    case OPT_VERBOSE: /* --verbose or -v */
+      opt_verbose = OPT_VERBOSE;
+      break;
+
+    case OPT_DEBUG: /* --debug or -d */
+      opt_verbose = OPT_DEBUG;
+      break;
+
+    case OPT_VERSION: /* --version or -V */
+      opt_version= true;
+      break;
+
+    case OPT_HELP: /* --help or -h */
+      opt_help= true;
+      break;
+
+    case OPT_SERVERS: /* --servers or -s */
+      opt_servers= strdup(optarg);
+      break;
+
+    case OPT_HASH:
+      opt_hash= strdup(optarg);
+      break;
+
+    case OPT_USERNAME:
+      opt_username= optarg;
+      break;
+
+    case OPT_PASSWD:
+      opt_passwd= optarg;
+      break;
+
+    case OPT_QUIET:
+      close_stdio();
+      break;
+
+    case '?':
+      /* getopt_long already printed an error message. */
+      exit(EXIT_SUCCESS);
+
+    default:
+      abort();
+    }
+  }
+
+  if (opt_version)
+  {
+    version_command(PROGRAM_NAME);
+    exit(EXIT_SUCCESS);
+  }
+
+  if (opt_help)
+  {
+    help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
+    exit(EXIT_SUCCESS);
+  }
+}