tracker_types.h

/**
* Copyright (C) 2008 Happy Fish / YuQing
*
* FastDFS may be copied only under the terms of the GNU General
* Public License V3, which may be found in the FastDFS source kit.
* Please visit the FastDFS Home Page http://www.csource.org/ for more detail.
**/

//tracker_types.h

#ifndef _TRACKER_TYPES_H_
#define _TRACKER_TYPES_H_

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <time.h>
#include "fdfs_define.h"

#define FDFS_ONE_MB	(1024 * 1024)

#define FDFS_GROUP_NAME_MAX_LEN		16
#define FDFS_MAX_SERVERS_EACH_GROUP	32
#define FDFS_MAX_GROUPS		       512
#define FDFS_MAX_TRACKERS		16

#define FDFS_MAX_META_NAME_LEN		 64
#define FDFS_MAX_META_VALUE_LEN		256

#define FDFS_FILE_PREFIX_MAX_LEN	16
#define FDFS_LOGIC_FILE_PATH_LEN	10
#define FDFS_TRUE_FILE_PATH_LEN		 6
#define FDFS_FILENAME_BASE64_LENGTH     27
#define FDFS_TRUNK_FILE_INFO_LEN  16

#define FDFS_NORMAL_LOGIC_FILENAME_LENGTH (FDFS_LOGIC_FILE_PATH_LEN + \
		FDFS_FILENAME_BASE64_LENGTH + FDFS_FILE_EXT_NAME_MAX_LEN + 1)

#define FDFS_TRUNK_FILENAME_LENGTH (FDFS_TRUE_FILE_PATH_LEN + \
		FDFS_FILENAME_BASE64_LENGTH + FDFS_TRUNK_FILE_INFO_LEN + \
		1 + FDFS_FILE_EXT_NAME_MAX_LEN)
#define FDFS_TRUNK_LOGIC_FILENAME_LENGTH  (FDFS_TRUNK_FILENAME_LENGTH + \
		(FDFS_LOGIC_FILE_PATH_LEN - FDFS_TRUE_FILE_PATH_LEN))

#define FDFS_VERSION_SIZE		6

//status order is important!
#define FDFS_STORAGE_STATUS_INIT	  0
#define FDFS_STORAGE_STATUS_WAIT_SYNC	  1
#define FDFS_STORAGE_STATUS_SYNCING	  2
#define FDFS_STORAGE_STATUS_IP_CHANGED    3
#define FDFS_STORAGE_STATUS_DELETED	  4
#define FDFS_STORAGE_STATUS_OFFLINE	  5
#define FDFS_STORAGE_STATUS_ONLINE	  6
#define FDFS_STORAGE_STATUS_ACTIVE	  7
#define FDFS_STORAGE_STATUS_RECOVERY	  9
#define FDFS_STORAGE_STATUS_NONE	 99

//which group to upload file
#define FDFS_STORE_LOOKUP_ROUND_ROBIN	0  //round robin
#define FDFS_STORE_LOOKUP_SPEC_GROUP	1  //specify group
#define FDFS_STORE_LOOKUP_LOAD_BALANCE	2  //load balance

//which server to upload file
#define FDFS_STORE_SERVER_ROUND_ROBIN	0  //round robin
#define FDFS_STORE_SERVER_FIRST_BY_IP	1  //the first server order by ip
#define FDFS_STORE_SERVER_FIRST_BY_PRI	2  //the first server order by priority

//which server to download file
#define FDFS_DOWNLOAD_SERVER_ROUND_ROBIN	0  //round robin
#define FDFS_DOWNLOAD_SERVER_SOURCE_FIRST	1  //the source server

//which path to upload file
#define FDFS_STORE_PATH_ROUND_ROBIN	0  //round robin
#define FDFS_STORE_PATH_LOAD_BALANCE	2  //load balance

//the mode of the files distributed to the data path
#define FDFS_FILE_DIST_PATH_ROUND_ROBIN	0  //round robin
#define FDFS_FILE_DIST_PATH_RANDOM	1  //random

//http check alive type
#define FDFS_HTTP_CHECK_ALIVE_TYPE_TCP  0  //tcp
#define FDFS_HTTP_CHECK_ALIVE_TYPE_HTTP 1  //http

#define FDFS_DOWNLOAD_TYPE_TCP	0  //tcp
#define FDFS_DOWNLOAD_TYPE_HTTP	1  //http

#define FDFS_FILE_DIST_DEFAULT_ROTATE_COUNT   100

#define FDFS_DOMAIN_NAME_MAX_SIZE	128

#define FDFS_STORAGE_STORE_PATH_PREFIX_CHAR  'M'
#define FDFS_STORAGE_DATA_DIR_FORMAT         "%02X"
#define FDFS_STORAGE_META_FILE_EXT           "-m"

#define FDFS_APPENDER_FILE_SIZE  INFINITE_FILE_SIZE
#define FDFS_TRUNK_FILE_MARK_SIZE  (512 * 1024LL * 1024 * 1024 * 1024 * 1024LL)

#define FDFS_CHANGE_FLAG_TRACKER_LEADER	1  //tracker leader changed
#define FDFS_CHANGE_FLAG_TRUNK_SERVER	2  //trunk server changed
#define FDFS_CHANGE_FLAG_GROUP_SERVER	4  //group server changed

#define IS_APPENDER_FILE(file_size)   (file_size == FDFS_APPENDER_FILE_SIZE)
#define IS_TRUNK_FILE(file_size)     ((file_size&FDFS_TRUNK_FILE_MARK_SIZE)!=0)

#define IS_SLAVE_FILE(filename_len, file_size) \
	((filename_len > FDFS_TRUNK_LOGIC_FILENAME_LENGTH) || \
	(filename_len > FDFS_NORMAL_LOGIC_FILENAME_LENGTH && \
	 !IS_TRUNK_FILE(file_size)))

#define FDFS_TRUNK_FILE_TRUE_SIZE(file_size) \
	(file_size & (~(FDFS_TRUNK_FILE_MARK_SIZE)))

typedef struct
{
	char status;
	char port[4];
	char ip_addr[IP_ADDRESS_SIZE];
} FDFSStorageBrief;

typedef struct
{
	char group_name[FDFS_GROUP_NAME_MAX_LEN + 1];
	int64_t free_mb;  //free disk storage in MB
	int64_t trunk_free_mb;  //trunk free disk storage in MB
	int count;        //server count
	int storage_port; //storage server port
	int storage_http_port; //storage server http port
	int active_count; //active server count
	int current_write_server; //current server index to upload file
	int store_path_count;  //store base path count of each storage server
	int subdir_count_per_path;
	int current_trunk_file_id;  //current trunk file id
} FDFSGroupStat;

typedef struct
{
	/* following count stat by source server,
           not including synced count
	*/
	int64_t total_upload_count;
	int64_t success_upload_count;
	int64_t total_append_count;
	int64_t success_append_count;
	int64_t total_set_meta_count;
	int64_t success_set_meta_count;
	int64_t total_delete_count;
	int64_t success_delete_count;
	int64_t total_download_count;
	int64_t success_download_count;
	int64_t total_get_meta_count;
	int64_t success_get_meta_count;
	int64_t total_create_link_count;
	int64_t success_create_link_count;
	int64_t total_delete_link_count;
	int64_t success_delete_link_count;
	int64_t total_upload_bytes;
	int64_t success_upload_bytes;
	int64_t total_append_bytes;
	int64_t success_append_bytes;
	int64_t total_download_bytes;
	int64_t success_download_bytes;
	int64_t total_sync_in_bytes;
	int64_t success_sync_in_bytes;
	int64_t total_sync_out_bytes;
	int64_t success_sync_out_bytes;
	int64_t total_file_open_count;
	int64_t success_file_open_count;
	int64_t total_file_read_count;
	int64_t success_file_read_count;
	int64_t total_file_write_count;
	int64_t success_file_write_count;

	/* last update timestamp as source server, 
           current server' timestamp
	*/
	time_t last_source_update;

	/* last update timestamp as dest server, 
           current server' timestamp
	*/
	time_t last_sync_update;

	/* last syned timestamp, 
	   source server's timestamp
	*/
	time_t last_synced_timestamp;

	/* last heart beat time */
	time_t last_heart_beat_time;
} FDFSStorageStat;

/* struct for network transfering */
typedef struct
{
	char sz_total_upload_count[8];
	char sz_success_upload_count[8];
	char sz_total_append_count[8];
	char sz_success_append_count[8];
	char sz_total_set_meta_count[8];
	char sz_success_set_meta_count[8];
	char sz_total_delete_count[8];
	char sz_success_delete_count[8];
	char sz_total_download_count[8];
	char sz_success_download_count[8];
	char sz_total_get_meta_count[8];
	char sz_success_get_meta_count[8];
	char sz_total_create_link_count[8];
	char sz_success_create_link_count[8];
	char sz_total_delete_link_count[8];
	char sz_success_delete_link_count[8];
	char sz_total_upload_bytes[8];
	char sz_success_upload_bytes[8];
	char sz_total_append_bytes[8];
	char sz_success_append_bytes[8];
	char sz_total_download_bytes[8];
	char sz_success_download_bytes[8];
	char sz_total_sync_in_bytes[8];
	char sz_success_sync_in_bytes[8];
	char sz_total_sync_out_bytes[8];
	char sz_success_sync_out_bytes[8];
	char sz_total_file_open_count[8];
	char sz_success_file_open_count[8];
	char sz_total_file_read_count[8];
	char sz_success_file_read_count[8];
	char sz_total_file_write_count[8];
	char sz_success_file_write_count[8];
	char sz_last_source_update[8];
	char sz_last_sync_update[8];
	char sz_last_synced_timestamp[8];
	char sz_last_heart_beat_time[8];
} FDFSStorageStatBuff;

typedef struct StructFDFSStorageDetail
{
	char status;
	char ip_addr[IP_ADDRESS_SIZE];
	char domain_name[FDFS_DOMAIN_NAME_MAX_SIZE];
	char version[FDFS_VERSION_SIZE];

	struct StructFDFSStorageDetail *psync_src_server;
	time_t sync_until_timestamp;

	time_t join_time;  //storage join timestamp (create timestamp)
	time_t up_time;    //startup timestamp
	int64_t total_mb;  //total disk storage in MB
	int64_t free_mb;  //free disk storage in MB
	int64_t changelog_offset;  //changelog file offset

	int64_t *path_total_mbs; //total disk storage in MB
	int64_t *path_free_mbs;  //free disk storage in MB

	int store_path_count;  //store base path count of each storage server
	int subdir_count_per_path;
	int upload_priority; //storage upload priority

	int storage_port;   //storage server port
	int storage_http_port; //storage http server port

	int current_write_path; //current write path index

	int chg_count;    //current server changed counter
	int trunk_chg_count;   //trunk server changed count
	FDFSStorageStat stat;

#ifdef WITH_HTTPD
	int http_check_last_errno;
	int http_check_last_status;
	int http_check_fail_count;
	char http_check_error_info[256];
#endif
} FDFSStorageDetail;

typedef struct
{
	char group_name[FDFS_GROUP_NAME_MAX_LEN + 1];
	int64_t free_mb;  //free disk storage in MB
	int64_t trunk_free_mb;  //trunk free disk storage in MB
	int alloc_size;  //alloc storage count
	int count;    //total server count
	int active_count; //active server count
	int storage_port;  //storage server port
	int storage_http_port; //storage http server port
	int current_trunk_file_id;  //current trunk file id report by storage
	FDFSStorageDetail **all_servers;   //all storage servers
	FDFSStorageDetail **sorted_servers;  //storages order by ip addr
	FDFSStorageDetail **active_servers;  //storages order by ip addr
	FDFSStorageDetail *pStoreServer;  //for upload priority mode
	FDFSStorageDetail *pTrunkServer;  //point to the trunk server

#ifdef WITH_HTTPD
	FDFSStorageDetail **http_servers;  //storages order by ip addr
	int http_server_count; //http server count
	int current_http_server; //current http server index
#endif

	int current_read_server;   //current read storage server index
	int current_write_server;  //current write storage server index

	int store_path_count;  //store base path count of each storage server

	/* subdir_count * subdir_count directories will be auto created
	   under each store_path (disk) of the storage servers
	*/
	int subdir_count_per_path;

	int **last_sync_timestamps;//row for src storage, col for dest storage

	int chg_count;   //current group changed count
	int trunk_chg_count;   //trunk server changed count
	time_t last_source_update;  //last source update timestamp
	time_t last_sync_update;    //last synced update timestamp
} FDFSGroupInfo;

typedef struct
{
	int alloc_size;   //alloc group count
	int count;  //group count
	FDFSGroupInfo **groups;
	FDFSGroupInfo **sorted_groups; //groups order by group_name
	FDFSGroupInfo *pStoreGroup;  //the group to store uploaded files
	int current_write_group;  //current group index to upload file
	byte store_lookup;  //store to which group, from conf file
	byte store_server;  //store to which storage server, from conf file
	byte download_server; //download from which storage server, from conf file
	byte store_path;  //store to which path, from conf file
	char store_group[FDFS_GROUP_NAME_MAX_LEN + 1];
} FDFSGroups;

typedef struct
{
	int sock;
	int port;
	char ip_addr[IP_ADDRESS_SIZE];
	char group_name[FDFS_GROUP_NAME_MAX_LEN + 1];
} TrackerServerInfo;

typedef struct
{
	FDFSGroupInfo *pGroup;
	FDFSStorageDetail *pStorage;
	union {
		int tracker_leader;  //for notify storage servers
		int trunk_server;    //for notify other tracker servers
	} chg_count;
} TrackerClientInfo;

typedef struct
{
	char name[FDFS_MAX_META_NAME_LEN + 1];  //key
	char value[FDFS_MAX_META_VALUE_LEN + 1]; //value
} FDFSMetaData;

typedef struct
{
	char group_name[FDFS_GROUP_NAME_MAX_LEN + 1];
	char ip_addr[IP_ADDRESS_SIZE];
	char sync_src_ip_addr[IP_ADDRESS_SIZE];
} FDFSStorageSync;

typedef struct
{
	int storage_port;
	int storage_http_port;
	int store_path_count;
	int subdir_count_per_path;
	int upload_priority;
	int join_time; //storage join timestamp (create timestamp)
	int up_time;   //storage service started timestamp
        char version[FDFS_VERSION_SIZE];   //storage version
	char group_name[FDFS_GROUP_NAME_MAX_LEN + 1];
        char domain_name[FDFS_DOMAIN_NAME_MAX_SIZE];
        char init_flag;
	signed char status;
	int tracker_count;
	TrackerServerInfo tracker_servers[FDFS_MAX_TRACKERS];
} FDFSStorageJoinBody;

typedef struct
{
	int server_count;
	int server_index;  //server index for roundrobin
	int leader_index;  //leader server index
	TrackerServerInfo *servers;
} TrackerServerGroup;

typedef struct
{
	char *buffer;  //the buffer pointer
	char *current; //pointer to current position
	int length;    //the content length
	int version;   //for binlog pre-read, compare with binlog_write_version
} BinLogBuffer;

#endif