text: /* Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
  
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; version 2 of the License.
  
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
  
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software Foundation,
    51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */
  
  #ifndef TABLE_HOST_CACHE_H
  #define TABLE_HOST_CACHE_H
  
  /**
    @file storage/perfschema/table_host_cache.h
    Table HOST_CACHE (declarations).
  */
  
  #include "pfs_column_types.h"
  #include "pfs_engine_table.h"
  
  class Host_entry;
  
  /**
    @addtogroup Performance_schema_tables
    @{
  */
  
  /** A row of PERFORMANCE_SCHEMA.HOST_CACHE. */
  struct row_host_cache
  {
    /** Column IP. */
    char m_ip[64];
    uint m_ip_length;
    /** Column HOST. */
    char m_hostname[255];
    uint m_hostname_length;
    /** Column HOST_VALIDATED. */
    bool m_host_validated;
    /** Column SUM_CONNECT_ERRORS. */
    ulonglong m_sum_connect_errors;
    /** Column COUNT_HOST_BLOCKED_ERRORS. */
    ulonglong m_count_host_blocked_errors;
    /** Column COUNT_NAMEINFO_TRANSIENT_ERRORS. */
    ulonglong m_count_nameinfo_transient_errors;
    /** Column COUNT_NAMEINFO_PERMANENT_ERRORS. */
    ulonglong m_count_nameinfo_permanent_errors;
    /** Column COUNT_FORMAT_ERRORS. */
    ulonglong m_count_format_errors;
    /** Column COUNT_ADDRINFO_TRANSIENT_ERRORS. */
    ulonglong m_count_addrinfo_transient_errors;
    /** Column COUNT_ADDRINFO_PERMANENT_ERRORS. */
    ulonglong m_count_addrinfo_permanent_errors;
    /** Column COUNT_FCRDNS_ERRORS. */
    ulonglong m_count_fcrdns_errors;
    /** Column COUNT_HOST_ACL_ERRORS. */
    ulonglong m_count_host_acl_errors;
    /** Column COUNT_NO_AUTH_PLUGIN_ERRORS. */
    ulonglong m_count_no_auth_plugin_errors;
    /** Column COUNT_AUTH_PLUGIN_ERRORS. */
    ulonglong m_count_auth_plugin_errors;
    /** Column COUNT_HANDSHAKE_ERRORS. */
    ulonglong m_count_handshake_errors;
    /** Column COUNT_PROXY_USER_ERRORS. */
    ulonglong m_count_proxy_user_errors;
    /** Column COUNT_PROXY_USER_ACL_ERRORS. */
    ulonglong m_count_proxy_user_acl_errors;
    /** Column COUNT_AUTHENTICATION_ERRORS. */
    ulonglong m_count_authentication_errors;
    /** Column COUNT_SSL_ERRORS. */
    ulonglong m_count_ssl_errors;
    /** Column COUNT_MAX_USER_CONNECTION_ERRORS. */
    ulonglong m_count_max_user_connection_errors;
    /** Column COUNT_MAX_USER_CONNECTION_PER_HOUR_ERRORS. */
    ulonglong m_count_max_user_connection_per_hour_errors;
    /** Column COUNT_DEFAULT_DATABASE_ERRORS. */
    ulonglong m_count_default_database_errors;
    /** Column COUNT_INIT_CONNECT_ERRORS. */
    ulonglong m_count_init_connect_errors;
    /** Column COUNT_LOCAL_ERRORS. */
    ulonglong m_count_local_errors;
    /** Column COUNT_UNKNOWN_ERRORS. */
    ulonglong m_count_unknown_errors;
    /** Column FIRST_SEEN. */
    ulonglong m_first_seen;
    /** Column LAST_SEEN. */
    ulonglong m_last_seen;
    /** Column FIRST_ERROR_SEEN. */
    ulonglong m_first_error_seen;
    /** Column LAST_ERROR_SEEN. */
    ulonglong m_last_error_seen;
  };
  
  /** Table PERFORMANCE_SCHEMA.HOST_CACHE. */
  class table_host_cache : public PFS_engine_table
  {
  public:
    /** Table share. */
    static PFS_engine_table_share m_share;
    static PFS_engine_table* create();
    static int delete_all_rows();
    static ha_rows get_row_count();
  
    virtual int rnd_next();
    virtual int rnd_pos(const void *pos);
    virtual void reset_position(void);
  
  protected:
    virtual int read_row_values(TABLE *table,
                                unsigned char *buf,
                                Field **fields,
                                bool read_all);
  
    table_host_cache();
  
  public:
    ~table_host_cache()
    {}
  
  private:
    void materialize(THD *thd);
    static void make_row(Host_entry *entry, row_host_cache *row);
  
    /** Table share lock. */
    static THR_LOCK m_table_lock;
    /** Fields definition. */
    static TABLE_FIELD_DEF m_field_def;
  
    row_host_cache *m_all_rows;
    uint m_row_count;
    /** Current row. */
    row_host_cache *m_row;
    /** Current position. */
    PFS_simple_index m_pos;
    /** Next position. */
    PFS_simple_index m_next_pos;
  };
  
  /** @} */
  #endif
  