mirror of https://github.com/BOINC/boinc.git
126 lines
4.3 KiB
C++
126 lines
4.3 KiB
C++
// Berkeley Open Infrastructure for Network Computing
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// http://boinc.berkeley.edu
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// Copyright (C) 2005 University of California
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//
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// This is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation;
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// either version 2.1 of the License, or (at your option) any later version.
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//
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// This software is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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// See the GNU Lesser General Public License for more details.
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//
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// To view the GNU Lesser General Public License visit
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// http://www.gnu.org/copyleft/lesser.html
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// or write to the Free Software Foundation, Inc.,
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// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#ifndef _SCHEDULER_OP_
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#define _SCHEDULER_OP_
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// SCHEDULER_OP encapsulates the policy and mechanism
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// for communicating with scheduling servers.
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// It is implemented as a finite-state machine.
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// It is active in one of two modes:
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// get_work: the client wants to get work, and possibly to
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// return results as a side-effect
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// return_results: the client wants to return results, and possibly
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// to get work as a side-effect
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//
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#include <vector>
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#include "client_types.h"
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#include "http.h"
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#include "prefs.h"
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// default constants related to scheduler RPC policy
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#define MASTER_FETCH_PERIOD 10
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// fetch and parse master URL if nrpc_failures is a multiple of this
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#define RETRY_BASE_PERIOD 1
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// after failure, back off 2^nrpc_failures times this times random
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#define RETRY_CAP 10
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// cap on nrpc_failures in the above formula
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#define MASTER_FETCH_RETRY_CAP 3
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// cap on how many times we will contact master_url
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// before moving into a state in which we will not
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// exponentially backoff anymore but rather contact the master URL
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// at the frequency below
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#define MASTER_FETCH_INTERVAL (60*60*24*7*2) // 2 weeks
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// This is the Max on the time to wait after we've contacted the Master URL MASTER_FETCH_RETRY_CAP times.
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//The next two constants are used to bound RPC exponential waiting.
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#define SCHED_RETRY_DELAY_MIN 60 // 1 minute
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#define SCHED_RETRY_DELAY_MAX (60*60*4) // 4 hours
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#define SCHEDULER_OP_STATE_IDLE 0
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// invariant: in this state, our HTTP_OP is not in the HTTP_OP_SET
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#define SCHEDULER_OP_STATE_GET_MASTER 1
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#define SCHEDULER_OP_STATE_RPC 2
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struct SCHEDULER_OP {
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int state;
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int scheduler_op_retval;
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HTTP_OP http_op;
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HTTP_OP_SET* http_ops;
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PROJECT* project; // project we're currently contacting
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char scheduler_url[256];
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bool must_get_work; // true iff in get_work mode
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unsigned int url_index; // index within project's URL list
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SCHEDULER_OP(HTTP_OP_SET*);
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bool poll();
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int init_get_work(bool master_file_only);
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int init_return_results(PROJECT*);
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int init_op_project(double ns);
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int init_master_fetch();
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int set_min_rpc_time(PROJECT*);
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bool update_urls(std::vector<std::string> &urls);
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int start_op(PROJECT*);
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bool check_master_fetch_start();
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void backoff(PROJECT* p, const char *error_msg);
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int start_rpc();
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int parse_master_file(std::vector<std::string>&);
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};
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struct USER_MESSAGE {
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std::string message;
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std::string priority;
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USER_MESSAGE(char*, char*);
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};
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struct SCHEDULER_REPLY {
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int hostid;
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double request_delay;
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std::vector<USER_MESSAGE> messages;
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char* global_prefs_xml;
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// not including <global_preferences> tags;
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// may include <venue> elements
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char* project_prefs_xml;
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// not including <project_preferences> tags
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// may include <venue> elements
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char host_venue[256];
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unsigned int user_create_time;
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std::vector<APP> apps;
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std::vector<FILE_INFO> file_infos;
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std::vector<std::string> file_deletes;
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std::vector<APP_VERSION> app_versions;
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std::vector<WORKUNIT> workunits;
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std::vector<RESULT> results;
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std::vector<RESULT> result_acks;
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char* code_sign_key;
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char* code_sign_key_signature;
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bool message_ack;
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bool project_is_down;
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bool send_file_list;
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SCHEDULER_REPLY();
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~SCHEDULER_REPLY();
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int parse(FILE*, PROJECT*);
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};
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#endif
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