// The contents of this file are subject to the BOINC Public License
// Version 1.0 (the "License"); you may not use this file except in
// compliance with the License. You may obtain a copy of the License at
// http://boinc.berkeley.edu/license_1.0.txt
// 
// Software distributed under the License is distributed on an "AS IS"
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
// License for the specific language governing rights and limitations
// under the License. 
// 
// The Original Code is the Berkeley Open Infrastructure for Network Computing. 
// 
// The Initial Developer of the Original Code is the SETI@home project.
// Portions created by the SETI@home project are Copyright (C) 2002
// University of California at Berkeley. All Rights Reserved. 
// 
// Contributor(s):
//

#ifndef _BOINC_DB_
#define _BOINC_DB_

// Structures corresponding to database records.
// Some of these types have counterparts in client/types.h,
// but don't be deceived - client and server have different variants.

// The parse and write functions are for use in scheduler RPC.
// They don't necessarily serialize the entire records.

#include <stdio.h>

// Maximum allowed size for SQL based blobs (Binary Large Object)
//
#define MAX_BLOB_SIZE   4096

// represents the project as a whole.
// There is only of these per DB
//
struct PROJECT {
    int id;
    char short_name[256];
        // used as directory name and part of DB name of server side,
        // so no spaces or special chars
    char long_name[256];
        // shown on client side, e.g. in GUI
        // can contain spaces etc.
    void clear();
};

// A compilation target, i.e. a architecture/OS combination.
// The core client will be given only applications with the same platform
//
struct PLATFORM {
    int id;
    unsigned int create_time;
    char name[256];                 // i.e. "sparc-sun-solaris"
    char user_friendly_name[256];   // i.e. "SPARC Solaris 2.8"
    void clear();
};

// A version of the core client
//
struct CORE_VERSION {
    int id;
    unsigned int create_time;
    int version_num;
    int platformid;
    char xml_doc[MAX_BLOB_SIZE];        // a <file_info> for the download file
    char message[256];      // if we get a request from this version,
                            // send this message
    bool deprecated;        // if we get a request from this version,
                            // don't send it any work.

    void clear();
};

// An application.
//
struct APP {
    int id;
    unsigned int create_time;
    char name[256];         // application name, preferably short
    int min_version;        // don't use app versions before this
    int write(FILE*);
    void clear();
};

// A version of an application.
//
struct APP_VERSION {
    int id;
    unsigned int create_time;
    int appid;
    int version_num;
    int platformid;
    char xml_doc[MAX_BLOB_SIZE];
    // describes app files. format:
    // <file_info>...</file_info>
    // ...
    // <app_version>
    //     <app_name>...</app_name>
    //     <version_num>x</version_num>
    //     <file_ref>
    //        ...
    //        [<main_program/>]
    //        [<copy_file/>]
    //     </file_ref>
    // </app_version>
    //

    // the following let you handle backwards-incompatible changes to
    // the core client / app interface
    //
    int min_core_version;   // min core version this app will run with
    int max_core_version;   // if <>0, max core version this will run with

    int write(FILE*, APP&);
    void clear();
};

struct USER {
    int id;
    unsigned int create_time;
    char email_addr[256];
    char name[256];
    char authenticator[256];
    char country[256];
    char postal_code[256];
    double total_credit;
    double expavg_credit;           // credit per second, recent average
    double expavg_time;             // when the above was computed
    char global_prefs[MAX_BLOB_SIZE];
        // global preferences, within <global_preferences> tag
    char project_prefs[MAX_BLOB_SIZE];
        // project preferences, within <project_preferences> tag
    int teamid;                     // team ID if any
    char venue[256];                // home/work/school (default)
    char url[256];                  // user's web page if any
    bool send_email;
    bool show_hosts;
    void clear();
};

#define TEAM_TYPE_CLUB                  1
#define TEAM_TYPE_COMPANY               2
#define TEAM_TYPE_PRIMARY               3
#define TEAM_TYPE_SECONDARY             4
#define TEAM_TYPE_JUNIOR_COLLEGE        5
#define TEAM_TYPE_UNIVERSITY            6
#define TEAM_TYPE_GOVERNMENT            7

struct TEAM {
    int id;
    unsigned int create_time;
    int userid;             // User ID of team founder
    char name[256];
    char name_lc[256];      // Team name in lowercase (used for searching)
    char url[256];
    int type;               // Team type (see above)
    char name_html[256];
    char description[MAX_BLOB_SIZE];
    int nusers;             // UNDEFINED BY DEFAULT
    char country[256];
    double total_credit;    // UNDEFINED BY DEFAULT
    double expavg_credit;   // UNDEFINED BY DEFAULT
    void clear();
};

struct HOST {
    int id;
    unsigned int create_time;
    int userid;             // ID of user running this host
    int rpc_seqno;          // last seqno received from client
    unsigned int rpc_time;  // time of last scheduler RPC
    double total_credit;
    double expavg_credit;   // credit per second, recent average
    double expavg_time;     // last time the above was updated

    // all remaining items are assigned by the client
    int timezone;           // hours difference from GMT
    char domain_name[256];
    char serialnum[256];
    char last_ip_addr[256]; // IP address as of last RPC
    int nsame_ip_addr;      // # of RPCs with same IP address

    double on_frac;         // Fraction of time (0-1) that BOINC is running
    double connected_frac;  // Fraction of time that host is connected to net
    double active_frac;     // Fraction of time that host is enabled to work

    int p_ncpus;            // Number of CPUs on host
    char p_vendor[256];     // Vendor name of CPU
    char p_model[256];      // Model of CPU
    double p_fpops;         // measured floating point ops/sec of CPU
    double p_iops;          // measured integer ops/sec of CPU
    double p_membw;         // measured memory bandwidth (bytes/sec) of CPU
                            // The above are per CPU, not total
    double p_calculated;    // when the above were calculated

    char os_name[256];      // Name of operating system
    char os_version[256];   // Version of operating system

    double m_nbytes;        // Size of memory in bytes
    double m_cache;         // Size of CPU cache in bytes (L1 or L2?)
    double m_swap;          // Size of swap space in bytes

    double d_total;         // Total disk space on host
                            // - may include all volumes,
                            // even if BOINC can use only one of them
                            // - may include network (shared) storage
    double d_free;          // Of the total disk space, how much is free
    double d_boinc_used_total;
                            // amount being used for all projects
    double d_boinc_used_project;
                            // amount being used for this project
    double d_boinc_max;     // max amount that BOINC is allowed to use
                            // This reflects both user preferences
                            // and the fact that BOINC can use only 1 volume
    double n_bwup;          // Average upload bandwidth, bytes/sec
    double n_bwdown;        // Average download bandwidth, bytes/sec
                            // The above are derived from actual
                            // file upload/download times, and may reflect
                            // factors other than network bandwidth

    // The following is derived (by server) from other fields
    double credit_per_cpu_sec;

    char venue[256];        // home/work/school
    char projects[MAX_BLOB_SIZE];
                            // list of projects this host is attached to,
                            // and the resource shares (XML)

    int parse(FILE*);
    int parse_time_stats(FILE*);
    int parse_net_stats(FILE*);
    void clear();
};

// values for file_delete state
#define FILE_DELETE_INIT        0
#define FILE_DELETE_READY       1
#define FILE_DELETE_DONE        2

// values for assimilate_state
#define ASSIMILATE_INIT         0
#define ASSIMILATE_READY        1
#define ASSIMILATE_DONE         2

// NOTE: there is no overall state for a WU (like done/not done)
// There's just a bunch of independent substates
// (file delete, assimilate, and states of results, error flags)

// bit fields of error_mask
#define WU_ERROR_COULDNT_SEND_RESULT        1
#define WU_ERROR_TOO_MANY_ERROR_RESULTS     2
#define WU_ERROR_TOO_MANY_RESULTS            4

struct WORKUNIT {
    int id;
    unsigned int create_time;
    int appid;                  // associated app
    char name[256];
    char xml_doc[MAX_BLOB_SIZE];
    int batch;
    double rsc_fpops;           // estimated # of FP operations
    double rsc_iops;            // estimated # of integer operations
        // The above two items are used for 2 purposes:
        // 1) to estimate how long a result will take on a host
        //    for scheduling purposes;
        // 2) to calculate an upper bound on the CPU time for a result
        //    before it is aborted.
        //    Currently this is twice the estimated CPU time.
        //    At some point we might want to have separate "max rsc" fields
    double rsc_memory;          // estimated size of RAM working set (bytes)
        // currently used only by scheduler to screen hosts
        // At some point, could use as runtime limit
    double rsc_disk;            // estimated amount of disk needed (bytes)
        // (including input, output and temp files, but NOT the app)
        // This is used for 2 purposes:
        // 1) for scheduling (don't send this WU to a host w/ insuff. disk)
        // 2) upper bound (abort task if it uses more than this disk)
        // At some point we might want to have separate "max" fields
    bool need_validate;         // this WU has at least 1 result in
                                // validate state = NEED_CHECK
    int canonical_resultid;     // ID of canonical result, or zero
    double canonical_credit;    // credit that all correct results get
    unsigned int timeout_check_time;  // when to check for timeouts
                                // zero if no need to check
    int delay_bound;            // determines result deadline,
                                // timeout check time
    int error_mask;             // bitmask of errors (see above)
    int file_delete_state;
    int assimilate_state;
    int workseq_next;           // if part of a sequence, the next WU
    int opaque;                 // project-specific; usually external ID

    // the following not used in the DB
    char app_name[256];
    void clear();
};

// WARNING: be Very careful about changing any states, especially for a
// project already running - these values are entered into the database and
// must stay consistent.

#define RESULT_SERVER_STATE_INACTIVE       1
#define RESULT_SERVER_STATE_UNSENT         2
#define RESULT_SERVER_STATE_UNSENT_SEQ     3
    // unsent, part of a work sequence
#define RESULT_SERVER_STATE_IN_PROGRESS    4
#define RESULT_SERVER_STATE_OVER           5
    // we received a reply, timed out, or decided not to send.
    // Note: we could get a reply even after timing out.

#define RESULT_OUTCOME_INIT             0
#define RESULT_OUTCOME_SUCCESS          1
#define RESULT_OUTCOME_COULDNT_SEND     2
#define RESULT_OUTCOME_CLIENT_ERROR     3
#define RESULT_OUTCOME_NO_REPLY         4
#define RESULT_OUTCOME_DIDNT_NEED       5
    // we created the result but didn't need to send it because we already
    // got a quorum

#define VALIDATE_STATE_INIT         0
#define VALIDATE_STATE_VALID        1
#define VALIDATE_STATE_INVALID      2

struct RESULT {
    int id;
    unsigned int create_time;
    int workunitid;
    int server_state;               // see above
    int outcome;                    // see above; defined if server state OVER
    int client_state;               // phase that client contacted us in.
                                    // iff it is UPLOADED then outcome is success.
                                    // error details are in stderr_out.
                                    // The values for this field are defined
                                    // in lib/result_state.h
    int hostid;                     // host processing this result
    unsigned int report_deadline;   // deadline for receiving result
    unsigned int sent_time;         // when result was sent to host
    unsigned int received_time;     // when result was received from host
    char name[256];
    double cpu_time;                // CPU time used to complete result
    char xml_doc_in[MAX_BLOB_SIZE];     // descriptions of output files
    char xml_doc_out[MAX_BLOB_SIZE];    // MD5s of output files
    char stderr_out[MAX_BLOB_SIZE];     // stderr output, if any
    int batch;
    int file_delete_state;
    int validate_state;
    double claimed_credit;          // CPU time times host credit/sec
    double granted_credit;          // == canonical credit of WU
    int opaque;                     // project-specific; usually external ID
    int random;                     // determines send order

    // the following not used in the DB
    char wu_name[256];
    int parse_from_client(FILE*);
    void clear();
};

#define WORKSEQ_STATE_UNASSIGNED    0
#define WORKSEQ_STATE_ASSIGNED      1
#define WORKSEQ_STATE_DONE          2

struct WORKSEQ {
    int id;
    unsigned int create_time;
    int state;
    int hostid;                     // host this seq is assigned to
    int wuid_last_done;             // last validated WU or zero
    int wuid_last_sent;             // last sent WU or zero
    int workseqid_master;           // if part of a redundant group, master ID
    void clear();
};

extern int boinc_db_open(char* dbname, char* passwd);
extern int boinc_db_close();
extern void boinc_db_print_error(char*);
extern const char* boinc_db_error_string();
extern int boinc_db_insert_id();

#include "mysql.h"

struct CURSOR {
    int active;
    MYSQL_RES *rp;
};

// Base for derived classes that can access the DB
// Defines various generic operations on DB tables
//
class DB_BASE {
public:
    DB_BASE(char *table_name);
    int insert();
    int update();
    int lookup_id(int id);
    int lookup(char*);
    int enumerate(char* clause="");
    int count(int&, char* clause="");
    int sum(double&, char* field, char* clause="");
    int get_double(char* query, double&);
    int get_integer(char* query, int&);

    const char *table_name;
    CURSOR cursor;
    virtual int get_id();
    virtual void db_print(char*);
    virtual void db_parse(MYSQL_ROW&);
};

extern MYSQL *mysql;

class DB_PROJECT : public DB_BASE, public PROJECT {
public:
    DB_PROJECT();
    int get_id();
    void db_print(char*);
    void db_parse(MYSQL_ROW &row);
};

class DB_PLATFORM : public DB_BASE, public PLATFORM {
public:
    DB_PLATFORM();
    int get_id();
    void db_print(char*);
    void db_parse(MYSQL_ROW &row);
};

class DB_CORE_VERSION : public DB_BASE, public CORE_VERSION {
public:
    DB_CORE_VERSION();
    int get_id();
    void db_print(char*);
    void db_parse(MYSQL_ROW &row);
};

class DB_APP : public DB_BASE, public APP {
public:
    DB_APP();
    int get_id();
    void db_print(char*);
    void db_parse(MYSQL_ROW &row);
};

class DB_APP_VERSION : public DB_BASE, public APP_VERSION {
public:
    DB_APP_VERSION();
    int get_id();
    void db_print(char*);
    void db_parse(MYSQL_ROW &row);
};

class DB_USER : public DB_BASE, public USER {
public:
    DB_USER();
    int get_id();
    void db_print(char*);
    void db_parse(MYSQL_ROW &row);
    void operator=(USER& r) {USER::operator=(r);}
};

class DB_TEAM : public DB_BASE, public TEAM {
public:
    DB_TEAM();
    int get_id();
    void db_print(char*);
    void db_parse(MYSQL_ROW &row);
};

class DB_HOST : public DB_BASE, public HOST {
public:
    DB_HOST();
    int get_id();
    void db_print(char*);
    void db_parse(MYSQL_ROW &row);
    void operator=(HOST& r) {HOST::operator=(r);}
};

class DB_RESULT : public DB_BASE, public RESULT {
public:
    DB_RESULT();
    int get_id();
    void db_print(char*);
    void db_parse(MYSQL_ROW &row);
    void operator=(RESULT& r) {RESULT::operator=(r);}
};

class DB_WORKUNIT : public DB_BASE, public WORKUNIT {
public:
    DB_WORKUNIT();
    int get_id();
    void db_print(char*);
    void db_parse(MYSQL_ROW &row);
};

class DB_WORKSEQ : public DB_BASE, public WORKSEQ {
public:
    DB_WORKSEQ();
    int get_id();
    void db_print(char*);
    void db_parse(MYSQL_ROW &row);
};

extern int boinc_db_open(char*, char*);
#endif