C++ DB_HOST::fix_nans方法代码示例

//.........这里部分代码省略.........
            if (find_host_by_cpid(user, g_request->host.host_cpid, host)) {
                log_messages.printf(MSG_NORMAL,
                                    "[HOST#%d] [USER#%d] No host ID in request, but host with matching CPID found.\n",
                                    host.id, host.userid
                                   );
                if ((g_request->allow_multiple_clients != 1)
                        && (g_request->other_results.size() == 0)
                   ) {
                    mark_results_over(host);
                }
                goto got_host;
            }
        }

make_new_host:
        // One final attempt to locate an existing host record:
        // scan backwards through this user's hosts,
        // looking for one with the same host name,
        // IP address, processor and amount of RAM.
        // If found, use the existing host record,
        // and mark in-progress results as over.
        //
        // NOTE: If the client was run with --allow_multiple_clients, skip this.
        //
        if ((g_request->allow_multiple_clients != 1)
                && find_host_by_other(user, g_request->host, host)
           ) {
            log_messages.printf(MSG_NORMAL,
                                "[HOST#%d] [USER#%d] Found similar existing host for this user - assigned.\n",
                                host.id, host.userid
                               );
            mark_results_over(host);
            goto got_host;
        }
        // either of the above cases,
        // or host ID didn't match user ID,
        // or RPC seqno was too low.
        //
        // Create a new host.
        // g_reply->user is filled in and valid at this point
        //
        host = g_request->host;
        host.id = 0;
        host.create_time = time(0);
        host.userid = g_reply->user.id;
        host.rpc_seqno = 0;
        host.expavg_time = time(0);
        safe_strcpy(host.venue, g_reply->user.venue);
        host.fix_nans();
        retval = host.insert();
        if (retval) {
            g_reply->insert_message(
                "Couldn't create host record in database", "low"
            );
            boinc_db.print_error("host.insert()");
            log_messages.printf(MSG_CRITICAL, "host.insert() failed\n");
            return retval;
        }
        host.id = boinc_db.insert_id();

got_host:
        g_reply->host = host;
        g_reply->hostid = g_reply->host.id;
        // this tells client to updates its host ID
        g_request->rpc_seqno = 0;
        // this value eventually gets written to host DB record;
        // for new hosts it must be zero.
        // This kludge forces this.
    }

    // have user record in g_reply->user at this point
    //

    if (g_reply->user.teamid) {
        retval = team.lookup_id(g_reply->user.teamid);
        if (!retval) g_reply->team = team;
    }

    // compute email hash
    //
    md5_block(
        (unsigned char*)g_reply->user.email_addr,
        strlen(g_reply->user.email_addr),
        g_reply->email_hash
    );

    // if new user CPID, update user record
    //
    if (!g_request->using_weak_auth && strlen(g_request->cross_project_id)) {
        if (strcmp(g_request->cross_project_id, g_reply->user.cross_project_id)) {
            user.id = g_reply->user.id;
            escape_string(g_request->cross_project_id, sizeof(g_request->cross_project_id));
            sprintf(buf, "cross_project_id='%s'", g_request->cross_project_id);
            unescape_string(g_request->cross_project_id, sizeof(g_request->cross_project_id));
            user.update_field(buf);
        }
    }

    return 0;
}