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;; parameters
;;
(define tt-server-timeout-param (make-parameter 600))
;; make ttdat visible
(define *server-info* #f)
(define (tt:make-remote areapath)
(make-tt areapath: areapath))
;; 1 ... or #f
;; and check that dbfname matches. FIXME: the propagation of dbfname and run-id
;; might not make the best sense
;;
(define (tt:valid-run-id run-id dbfname)
(and (or (number? run-id)
(not run-id))
(equal? (dbfile:run-id->dbfname run-id) dbfname)))
(tcp-buffer-size 2048)
;; (max-connections 4096)
;; do all the busy work of finding and setting up conn for
;; connecting to a server
;;
(define (tt:client-connect-to-server ttdat dbfname run-id testsuite)
(assert (tt:valid-run-id run-id dbfname) "FATAL: invalid run-id "run-id)
(let* ((conn (hash-table-ref/default (tt-conns ttdat) dbfname #f))
(server-start-proc (lambda ()
(tt:server-process-run
(tt-areapath ttdat)
testsuite ;; (dbfile:testsuite-name)
(common:find-local-megatest)
run-id))))
(if conn
(begin
; (debug:print-info 0 *default-log-port* "already connected to the server")
conn) ;; we are already connected to the server
(let* ((sdat (tt:get-current-server-info ttdat dbfname)))
(match sdat
((host port start-time server-id pid dbfname2 servinffile)
(assert (equal? dbfname dbfname2) "FATAL: read server info from wrong file.")
;(debug:print-info 0 *default-log-port* "in match servinffile:" servinffile)
(let* ((host-port (conc host":"port))
(conn (make-tt-conn
host: host
port: port
host-port: host-port
dbfname: dbfname
servinf-file: servinffile
server-id: server-id
server-start: start-time
pid: pid)))
;; verify we can talk to this server
(let* ((result (tt:timed-ping host port server-id))
(ping-res (car result))
(ping (cdr result)))
(debug:print-info 0 *default-log-port* "ping time: " ping)
(case ping-res
((running)
(hash-table-set! (tt-conns ttdat) dbfname conn) ;;; is this ok to save before validating that the connection is good?
conn)
((starting)
(thread-sleep! 0.5)
(tt:client-connect-to-server ttdat dbfname run-id testsuite))
(else
(let* ((curr-secs (current-seconds)))
;; rm the (last server) would go here
(if (> (- curr-secs (tt-last-serv-start ttdat)) 10)
(begin
(tt-last-serv-start-set! ttdat curr-secs)
(server-start-proc))) ;; start server if 30 sec since last attempt
(thread-sleep! 1)
(tt:client-connect-to-server ttdat dbfname run-id testsuite)))))))
(else ;; no good server found, if haven't started server in > 5 secs, start another
(if (> (- (current-seconds) (tt-last-serv-start ttdat)) 5) ;; BUG - grow this number really do not want to swamp the machine with servers
(begin
(debug:print-info 0 *default-log-port* "No server found. Starting one for run-id "run-id" in dbfile "dbfname)
(server-start-proc)
(tt-last-serv-start-set! ttdat (current-seconds))))
(thread-sleep! 1)
(tt:client-connect-to-server ttdat dbfname run-id testsuite)))))))
(define (tt:timed-ping host port server-id)
(let* ((start-time (current-milliseconds))
(result (tt:ping host port server-id)))
(cons result (- (current-milliseconds) start-time))))
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;; parameters
;;
(define tt-server-timeout-param (make-parameter 600))
;; make ttdat visible
(define *server-info* #f)
(define *server-run* #t)
(define (tt:make-remote areapath)
(make-tt areapath: areapath))
;; 1 ... or #f
;; and check that dbfname matches. FIXME: the propagation of dbfname and run-id
;; might not make the best sense
;;
(define (tt:valid-run-id run-id dbfname)
(and (or (number? run-id)
(not run-id))
(equal? (dbfile:run-id->dbfname run-id) dbfname)))
(tcp-buffer-size 2048)
;; (max-connections 4096)
(define (tt:get-conn ttdat dbfname)
(hash-table-ref/default (tt-conns ttdat) dbfname #f))
;; do all the busy work of finding and setting up conn for
;; connecting to a server
;;
(define (tt:client-connect-to-server ttdat dbfname run-id testsuite server-start-proc)
(assert (tt:valid-run-id run-id dbfname) "FATAL: invalid run-id "run-id)
(debug:print-info 2 *default-log-port* "tt:client-connect-to-server " dbfname " " run-id)
(let* ((conn (tt:get-conn ttdat dbfname))
(server-start-proc (or server-start-proc
(lambda ()
(assert (equal? dbfname "main.db") ;; only main.db is started here
"FATAL: called server-start-proc for db other than main.db")
(tt:server-process-run
(tt-areapath ttdat)
testsuite ;; (dbfile:testsuite-name)
(common:find-local-megatest)
run-id)))))
(if conn
(begin
(debug:print-info 2 *default-log-port* "already connected to a server")
conn) ;; we are already connected to the server
(let* ((sdat (tt:get-current-server-info ttdat dbfname)))
(match sdat
((host port start-time server-id pid dbfname2 servinffile)
(assert (equal? dbfname dbfname2) "FATAL: read server info from wrong file.")
(debug:print-info 2 *default-log-port* "no conn - in match servinffile:" servinffile)
(let* ((host-port (conc host":"port))
(conn (make-tt-conn
host: host
port: port
host-port: host-port
dbfname: dbfname
servinf-file: servinffile
server-id: server-id
server-start: start-time
pid: pid)))
;; verify we can talk to this server
(let* ((result (tt:timed-ping host port server-id))
(ping-res (car result))
(ping (cdr result)))
(debug:print-info 2 *default-log-port* "host " host " port " port " ping time: " ping " result " ping-res)
(case ping-res
((running)
(debug:print-info 2 *default-log-port* "Setting conn = " conn " in hash table")
(hash-table-set! (tt-conns ttdat) dbfname conn) ;;; is this ok to save before validating that the connection is good?
conn)
((starting)
(thread-sleep! 0.5)
(debug:print-info 0 *default-log-port* "server for " dbfname " is in starting state, retrying connect")
(tt:client-connect-to-server ttdat dbfname run-id testsuite server-start-proc))
(else
(let* ((curr-secs (current-seconds)))
;; rm the (last server) would go here
(if (> (- curr-secs (tt-last-serv-start ttdat)) 10)
(begin
(tt-last-serv-start-set! ttdat curr-secs)
(server-start-proc))) ;; start server if 10 sec since last attempt
(thread-sleep! 1)
(debug:print-info 2 *default-log-port* "server ping result was neither running nor starting. Retrying connect")
(tt:client-connect-to-server ttdat dbfname run-id testsuite server-start-proc)))))))
(else ;; no good server found, if haven't started server in > 5 secs, start another
(if (> (- (current-seconds) (tt-last-serv-start ttdat)) 3) ;; BUG - grow this number really do not want to swamp the machine with servers
(begin
(debug:print-info 0 *default-log-port* "Starting server for "dbfname)
(server-start-proc)
(tt-last-serv-start-set! ttdat (current-seconds))
(thread-sleep! 3)
))
(thread-sleep! 1)
(debug:print-info 0 *default-log-port* "Connect to server for " dbfname)
(tt:client-connect-to-server ttdat dbfname run-id testsuite server-start-proc)))))))
(define (tt:timed-ping host port server-id)
(let* ((start-time (current-milliseconds))
(result (tt:ping host port server-id)))
(cons result (- (current-milliseconds) start-time))))
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;; (debug:print 0 *default-log-port* "res not in form (status errmsg result meta), got: "res)
(try-again)))))
;; client side handler
;;
;;(tt:handler #<tt> get-keys #f () 2 #f "/home/matt/data/megatest/ext-tests" #f "main.db" "ext-tests" "/home/matt/data/megatest/bin/.22.04/../megatest")
;;
(define (tt:handler ttdat cmd run-id params attemptnum area-dat areapath readonly-mode dbfname testsuite mtexe)
;; NOTE: areapath is passed in and in tt struct. We'll use passed in value for now.
(let* ((conn (tt:client-connect-to-server ttdat dbfname run-id testsuite))) ;; (hash-table-ref/default (tt-conns ttdat) dbfname #f)))
(if conn
;; have connection, call the server
(let* ((res (tt:send-receive ttdat conn cmd run-id params)))
;; res is (status errmsg result meta)
; (debug:print 0 *default-log-port* "conn:" conn " res: " res)
(let* ((dly (if (number? result) result 0.1)))
(debug:print 0 *default-log-port* "WARNING: server for "dbfname" is busy, will try again in "dly" seconds.")
(thread-sleep! dly)
(tt:handler ttdat cmd run-id params (+ attemptnum 1) area-dat areapath readonly-mode dbfname testsuite mtexe)))
((loaded)
(debug:print 0 *default-log-port* "WARNING: server for "dbfname" is loaded, slowing queries.")
(tt:backoff-incr (tt-conn-host conn)(tt-conn-port conn))
result) ;; (tt:handler ttdat cmd run-id params (+ attemptnum 1) area-dat areapath readonly-mode dbfname testsuite mtexe))
(else
result)))
(else ;; did not receive properly formated result
(if (not res) ;; tt:handler is telling us that communication failed
(let* ((host (tt-conn-host conn))
(port (tt-conn-port conn))
;; (dbfname (tt-conn-port conn)) ;; 192.168.0.127:4242-726924:4.db
(pid (tt-conn-pid conn))
;;(servinf (tt-conn-servinf-file conn)))
(servinf (tt-servinf-file ttdat))) ;; (conc areapath"/.servinfo/"host":"port"-"pid":"dbfname))) ;; TODO, use (server:get-servinfo-dir areapath)
(hash-table-set! (tt-conns ttdat) dbfname #f)
(if (and servinf (file-exists? servinf))
(begin
(if (< attemptnum 10)
(begin
(thread-sleep! 0.5)
(tt:handler ttdat cmd run-id params (+ attemptnum 1) area-dat areapath readonly-mode dbfname testsuite mtexe))
(begin
(debug:print 0 *default-log-port* "INFO: no response from server "host":"port" for "dbfname)
(if (and (file-exists? servinf)
(> (- (current-seconds)(file-modification-time servinf)) 60))
(begin
(debug:print 0 *default-log-port* "INFO: "servinf" file seems old and no ping response, removing it.")
(handle-exceptions
exn
#f
(delete-file* servinf))
(tt:handler ttdat cmd run-id params (+ attemptnum 1) area-dat areapath readonly-mode dbfname testsuite mtexe))
(begin
;; start server - addressed in client-connect-to-server
;; delay - addressed in client-connect-to-server
;; try again
(thread-sleep! 0.25) ;; dunno, I think this needs to be here
(tt:handler ttdat cmd run-id params (+ attemptnum 1) area-dat areapath readonly-mode dbfname testsuite mtexe))
))))
(begin ;; no server file, delay and try again
(debug:print 0 *default-log-port* "INFO: connection to server "host":"port" broken for "dbfname", but do not see servinf file "servinf)
(thread-sleep! 0.5)
(tt:handler ttdat cmd run-id params (+ attemptnum 1) area-dat areapath readonly-mode dbfname testsuite mtexe))))
(begin ;; this case is where res is malformed. Probably should abort
(assert #f "FATAL: tt:handler received bad data "res)
;; (debug:print 0 *default-log-port* "INFO: got corrupt data from server "host":"port", "res", for "dbfname", will try again.")
;; (tt:handler ttdat cmd run-id params (+ attemptnum 1) area-dat areapath readonly-mode dbfname testsuite mtexe)
)))))
(begin
(thread-sleep! 1) ;; no conn yet set up, give it a rest and try again
(tt:handler ttdat cmd run-id params attemptnum area-dat areapath readonly-mode dbfname testsuite mtexe)))))
(define (tt:bid-for-servership run-id)
#f)
;; gets server info and appends path to server file
;; sorts by age, oldest first
;;
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;; (debug:print 0 *default-log-port* "res not in form (status errmsg result meta), got: "res)
(try-again)))))
;; client side handler
;;
;;(tt:handler #<tt> get-keys #f () 2 #f "/home/matt/data/megatest/ext-tests" #f "main.db" "ext-tests" "/home/matt/data/megatest/bin/.22.04/../megatest")
;;
(define (tt:handler ttdat cmd run-id params attemptnum readonly-mode dbfname testsuite mtexe server-start-proc)
;; connect-to-server will start a server if needed.
(let* ((areapath (tt-areapath ttdat))
(conn (tt:client-connect-to-server ttdat dbfname run-id testsuite server-start-proc))) ;; looks up conn keyed by dbfname
(if conn
;; have connection, call the server
(let* ((res (tt:send-receive ttdat conn cmd run-id params)))
;; res is (status errmsg result meta)
(match res
((status errmsg result meta)
(if (list? meta)
(let* ((delay-wait (alist-ref 'delay-wait meta)))
(if (and (number? delay-wait)
(> delay-wait 0))
(begin
(debug:print 0 *default-log-port* "Server is loaded, delaying "delay-wait" seconds")
(thread-sleep! delay-wait)))))
(case status
((busy) ;; result will be how long the server wants you to delay
(let* ((raw-dly (if (number? result) result 0.1))
(dly (+ raw-dly (/ attemptnum 10)))) ;; (* raw-dly (/ attemptnum 2))))
(debug:print 0 *default-log-port* "WARNING: server for "dbfname" is busy, cmd is "cmd", will try again in "dly" seconds. This is attempt "(- attemptnum 1))
(thread-sleep! dly)
(tt:handler ttdat cmd run-id params (+ attemptnum 1) readonly-mode dbfname testsuite mtexe server-start-proc)))
((loaded)
(debug:print 0 *default-log-port* "WARNING: server for "dbfname" is loaded, slowing queries.")
(tt:backoff-incr (tt-conn-host conn)(tt-conn-port conn))
result) ;; (tt:handler ttdat cmd run-id params (+ attemptnum 1) readonly-mode dbfname testsuite mtexe))
(else
result)))
(else ;; did not receive properly formated result
(if (not res) ;; tt:send-receive telling us that communication failed
(let* ((host (tt-conn-host conn))
(port (tt-conn-port conn))
;; (dbfname (tt-conn-port conn)) ;; 192.168.0.127:4242-726924:4.db
(pid (tt-conn-pid conn))
;;(servinf (tt-conn-servinf-file conn)))
(servinf (tt-servinf-file ttdat))) ;; (conc areapath"/.servinfo/"host":"port"-"pid":"dbfname))) ;; TODO, use (server:get-servinfo-dir areapath)
(hash-table-set! (tt-conns ttdat) dbfname #f) ;; clear out the conn for this dbfname to force finding new server
(if (and servinf (file-exists? servinf))
(begin
(if (< attemptnum 10)
(begin
(thread-sleep! 0.5)
(tt:handler ttdat cmd run-id params (+ attemptnum 1) readonly-mode dbfname testsuite mtexe server-start-proc))
(begin
(debug:print 0 *default-log-port* "INFO: no response from server "host":"port" for "dbfname)
(if (and (file-exists? servinf)
(> (- (current-seconds)(file-modification-time servinf)) 60))
(begin
(debug:print 0 *default-log-port* "INFO: "servinf" file seems old and no ping response, removing it.")
(handle-exceptions
exn
#f
(delete-file* servinf))
(tt:handler ttdat cmd run-id params (+ attemptnum 1) readonly-mode dbfname testsuite mtexe server-start-proc))
(begin
;; start server - addressed in client-connect-to-server
;; delay - addressed in client-connect-to-server
;; try again
(thread-sleep! 0.25) ;; dunno, I think this needs to be here
(tt:handler ttdat cmd run-id params (+ attemptnum 1) readonly-mode dbfname testsuite mtexe server-start-proc))
))))
(begin ;; no server file, delay and try again
(debug:print 2 *default-log-port* "INFO: connection to server "host":"port" broken for "dbfname", no servinf file. Server exited? ")
(thread-sleep! 0.5)
(tt:handler ttdat cmd run-id params (+ attemptnum 1) readonly-mode dbfname testsuite mtexe server-start-proc))))
(begin ;; this case is where res is malformed. Probably should abort
(assert #f "FATAL: tt:handler received bad data "res)
;; (debug:print 0 *default-log-port* "INFO: got corrupt data from server "host":"port", "res", for "dbfname", will try again.")
;; (tt:handler ttdat cmd run-id params (+ attemptnum 1) readonly-mode dbfname testsuite mtexe)
)))))
(begin
(thread-sleep! 1) ;; no conn yet set up, give it a rest and try again
(tt:handler ttdat cmd run-id params attemptnum readonly-mode dbfname testsuite mtexe server-start-proc)))))
(define (tt:bid-for-servership run-id)
#f)
;; gets server info and appends path to server file
;; sorts by age, oldest first
;;
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;; This is the routine called in megatest.scm to start a server
;;
;; Server viability is checked in keep-running. Blindly start and run here.
;;
(define (tt:start-server areapath run-id dbfname-in handler keys)
(assert areapath "FATAL: areapath not provided for tt:start-server")
;; is there already a server for this dbfile? Then exit.
(let* ((ttdat (make-tt areapath: areapath))
(dbfname (or dbfname-in (dbmod:run-id->dbfname run-id)))
(servers (tt:find-server areapath dbfname))) ;; should use tt:get-current-server-info instead
(if (> (length servers) 4)
(begin
(debug:print 0 *default-log-port* "INFO: found server(s) already running for db "dbfname", "(string-intersperse servers ",")" Exiting.")
(exit))
(let* ((dbstruct (dbmod:open-dbmoddb areapath run-id dbfname (dbfile:db-init-proc) keys)))
(tt-handler-set! ttdat (handler dbstruct))
(let* ((tcp-thread (make-thread
(lambda ()
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;; This is the routine called in megatest.scm to start a server
;;
;; Server viability is checked in keep-running. Blindly start and run here.
;;
(define (tt:start-server areapath run-id dbfname-in handler keys)
(assert areapath "FATAL: areapath not provided for tt:start-server")
;; is there already a server for this dbfile? Then exit.
(debug:print 2 *default-log-port* "tt:start-server: " dbfname-in)
(let* ((ttdat (make-tt areapath: areapath))
(dbfname (or dbfname-in (dbmod:run-id->dbfname run-id)))
(servers (tt:find-server areapath dbfname))) ;; should use tt:get-current-server-info instead
(debug:print 0 *default-log-port* "Found " (length servers) " already running for " dbfname)
(if (> (length servers) 0)
(begin
(debug:print 0 *default-log-port* "INFO: found server(s) already running for db "dbfname", "(string-intersperse servers ",")" Exiting.")
(exit))
(let* ((dbstruct (dbmod:open-dbmoddb areapath run-id dbfname (dbfile:db-init-proc) keys)))
(tt-handler-set! ttdat (handler dbstruct))
(let* ((tcp-thread (make-thread
(lambda ()
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;; wait for a port before creating the registration file
;;
(let* ((db-locked-in #f)
(areapath (tt-areapath ttdat))
(nosyncdbpath (conc areapath"/.mtdb"))
(cleanup (lambda ()
(if (tt-cleanup-proc ttdat)
((tt-cleanup-proc ttdat)))
(dbfile:with-no-sync-db nosyncdbpath
(lambda (db)
(let* ((dbtmpname (dbr:dbstruct-dbtmpname dbstruct)))
(debug:print-info 0 *default-log-port* "Running clean up, including removing db file "dbtmpname)
(db:no-sync-del! db dbfname)
#;(if dbtmpname
(delete-file dbtmpname))))))))
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;; wait for a port before creating the registration file
;;
(let* ((db-locked-in #f)
(areapath (tt-areapath ttdat))
(nosyncdbpath (conc areapath"/.mtdb"))
(cleanup (lambda ()
(if (tt-cleanup-proc ttdat)
((tt-cleanup-proc ttdat))) ;; removes .servinfo file
(dbfile:with-no-sync-db nosyncdbpath
(lambda (db)
(let* ((dbtmpname (dbr:dbstruct-dbtmpname dbstruct)))
;; (debug:print-info 0 *default-log-port* "Running clean up, including removing db file "dbtmpname)
(db:no-sync-del! db dbfname)
))))))
(set! *server-info* ttdat)
(let loop ((count 0))
(if (> count 240)
(begin
(debug:print 0 *default-log-port* "FATAL: Could not start a tcp server, giving up.")
(exit 1))
(if (not (tt-port ttdat)) ;; no connection yet
(begin
(thread-sleep! 0.25)
(loop (+ count 1))))))
(tt:create-server-registration-file ttdat dbfname)
;; now start watching the last-access, if it hasn't been touched
;; in over ten seconds we exit
(thread-sleep! 0.05) ;; any real need for delay here?
(let loop ()
(let* ((servers (tt:get-server-info-sorted ttdat dbfname))
(ok (cond
((not *server-run*)
(debug:print 0 *default-log-port* "WARNING: received a stop server from client by remote request.")
#f)
((null? servers) #f) ;; not ok
((equal? (list-ref (car servers) 6) ;; compare the servinfofile
(tt-servinf-file ttdat))
(let* ((res (if db-locked-in
#t
(let* ((lock-result ;; this is the primary lock - need to double verify that got it
(dbfile:with-no-sync-db
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(debug:print 0 *default-log-port* "Failed to get server lock for "dbfname)
#f))))))
(if (and res (common:low-noise-print 120 "top server message"))
(debug:print-info 0 *default-log-port* "Keep running, I'm the top server for "
dbfname" on "(tt-host ttdat)":"(tt-port ttdat)))
res))
(else
(debug:print-info 0 *default-log-port* "I'm not the lead server: "servers)
(let* ((leadsrv (car servers)))
(match leadsrv
((host port startseconds server-id pid dbfname servinfofile)
(let* ((result (tt:timed-ping host port server-id))
(res (car result))
(ping (cdr result)))
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(debug:print 0 *default-log-port* "Failed to get server lock for "dbfname)
#f))))))
(if (and res (common:low-noise-print 120 "top server message"))
(debug:print-info 0 *default-log-port* "Keep running, I'm the top server for "
dbfname" on "(tt-host ttdat)":"(tt-port ttdat)))
res))
(else
;; wrong servinfo file
(debug:print-info 0 *default-log-port* "I'm not the lead server: "servers)
(let* ((leadsrv (car servers)))
(match leadsrv
((host port startseconds server-id pid dbfname servinfofile)
(let* ((result (tt:timed-ping host port server-id))
(res (car result))
(ping (cdr result)))
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(cleanup)
(exit)))
(let* ((last-update (dbr:dbstruct-last-update dbstruct))
(curr-secs (current-seconds)))
(if (and (eq? (tt-state ttdat) 'running)
(> (- curr-secs last-update) 3)) ;; every 3-4 seconds update the db?
(begin
(set! (file-modification-time (tt-servinf-file ttdat)) (current-seconds))
((dbr:dbstruct-sync-proc dbstruct) last-update)
(dbr:dbstruct-last-update-set! dbstruct curr-secs))))
(if (< (- (current-seconds) (tt-last-access ttdat)) (tt-server-timeout-param))
(begin
(thread-sleep! 5)
(loop)))))
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(cleanup)
(exit)))
(let* ((last-update (dbr:dbstruct-last-update dbstruct))
(curr-secs (current-seconds)))
(if (and (eq? (tt-state ttdat) 'running)
(> (- curr-secs last-update) 3)) ;; every 3-4 seconds update the db?
(let* ((sinfo-file (tt-servinf-file ttdat)))
;; (debug:print 0 *default-log-port* "INFO: touching "sinfo-file)
(set! (file-modification-time sinfo-file) (current-seconds))
((dbr:dbstruct-sync-proc dbstruct) last-update)
(dbr:dbstruct-last-update-set! dbstruct curr-secs))))
(if (< (- (current-seconds) (tt-last-access ttdat)) (tt-server-timeout-param))
(begin
(thread-sleep! 5)
(loop)))))
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;; find valid server
;; get servers listed, last part of name must match :<dbfname>
;; if more than one, wait one second and look again
;; future: ping oldest, if alive remove other :<dbfname> files
;;
(define (tt:find-server areapath dbfname)
(let* ((servdir (tt:get-servinfo-dir areapath))
(sfiles (glob (conc servdir"/*:"dbfname))))
sfiles))
;; given a path to a server info file return: host port startseconds server-id pid dbfname logf
;; example of what it's looking for in the log file:
;; SERVER STARTED: 10.38.175.67:50216 AT 1616502350.0 server-id: 4907e90fc55c7a09694e3f658c639cf4
;;
(define (tt:server-get-info logf)
(let ((server-rx (regexp "^SERVER STARTED: (\\S+):(\\d+) AT ([\\d\\.]+) server-id: (\\S+) pid: (\\d+) dbfname: (\\S+)")) ;; SERVER STARTED: host:port AT timesecs server id
(dbprep-rx (regexp "^SERVER: dbprep"))
(dbprep-found 0)
(bad-dat (list #f #f #f #f #f #f logf)))
(let ((fdat (handle-exceptions
exn
(begin
;; WARNING: this is potentially dangerous to blanket ignore the errors
(debug:print-info 0 *default-log-port* "Unable to get server info from "logf", exn="(condition->list exn))
'()) ;; no idea what went wrong, call it a bad server, return empty list
(with-input-from-file logf read-lines))))
(if (null? fdat) ;; bad data, return bad-dat
bad-dat
(let loop ((inl (car fdat))
(tail (cdr fdat))
(lnum 0))
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;; find valid server
;; get servers listed, last part of name must match :<dbfname>
;; if more than one, wait one second and look again
;; future: ping oldest, if alive remove other :<dbfname> files
;;
(define (tt:find-server areapath dbfname)
(let* ((servdir (tt:get-servinfo-dir areapath))
(sfiles (glob (conc servdir"/*:"dbfname)))
(goodfiles '()))
;; filter the files here by looking in processes table (if we are not main.db)
;; and or look at the time stamp on the servinfo file, a running server will
;; touch the file every minute (again, this will only apply for main.db)
(for-each (lambda (fname)
(let* ((age (- (current-seconds)(file-modification-time fname))))
(if (> age 200) ;; can't trust it if over twenty seconds old
(begin
(debug:print 0 *default-log-port* "WARNING: removing stale servinfo file "fname)
(handle-exceptions
exn
(debug:print 0 *default-log-port* "WARNING: error attempting to remove stale servinfo file "fname)
(delete-file fname))) ;;
(set! goodfiles (cons fname goodfiles)))))
sfiles)
goodfiles))
;; given a path to a server info file return: host port startseconds server-id pid dbfname logf
;; example of what it's looking for in the log file:
;; SERVER STARTED: 10.38.175.67:50216 AT 1616502350.0 server-id: 4907e90fc55c7a09694e3f658c639cf4
;;
(define (tt:server-get-info logf)
(let ((server-rx (regexp "^SERVER STARTED: (\\S+):(\\d+) AT ([\\d\\.]+) server-id: (\\S+) pid: (\\d+) dbfname: (\\S+)")) ;; SERVER STARTED: host:port AT timesecs server id
(dbprep-rx (regexp "^SERVER: dbprep"))
(dbprep-found 0)
(bad-dat (list #f #f #f #f #f #f logf)))
(let ((fdat (handle-exceptions
exn
(begin
;; BUG, TODO: add err checking, for now blanket ignore the errors?
(debug:print-info 0 *default-log-port* "Unable to get server info from "logf
", exn="(condition->list exn))
'()) ;; no idea what went wrong, call it a bad server, return empty list
(with-input-from-file logf read-lines))))
(if (null? fdat) ;; bad data, return bad-dat
bad-dat
(let loop ((inl (car fdat))
(tail (cdr fdat))
(lnum 0))
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(string->number pid)
dbfname
logf))
(else
(debug:print 0 *default-log-port* "ERROR: did not recognise SERVER line info "mlst)
bad-dat)))))))))
;; Given an area path, start a server process ### NOTE ### > file 2>&1
;; if the target-host is set
;; try running on that host
;; incidental: rotate logs in logs/ dir.
;;
(define (tt:server-process-run areapath testsuite mtexe run-id #!key (profile-mode "")) ;; areapath is *toppath* for a given testsuite area
(assert areapath "FATAL: tt:server-process-run called without areapath defined.")
(assert testsuite "FATAL: tt:server-process-run called without testsuite defined.")
(assert mtexe "FATAL: tt:server-process-run called without mtexe defined.")
;; mtest -server - -m testsuite:ext-tests -db 6.db
(let* ((dbfname (dbmod:run-id->dbfname run-id))
(load (get-normalized-cpu-load))
(trying (length (tt:find-server areapath dbfname)))
(nrun (number-of-processes-running (conc "mtest.*server.*"testsuite".*"dbfname))))
(cond
((> load 2.0)
(debug:print 0 *default-log-port* "Normalized load "load" on " (get-host-name) " is over the limit of 2.0. Not starting a server.")
(thread-sleep! 1))
((> nrun 100)
(debug:print 0 *default-log-port* nrun" servers running on " (get-host-name) ", not starting another.")
(thread-sleep! 1))
((> trying 4)
(debug:print 0 *default-log-port* trying" servers registered in .servinfo dir. not starting another.")
(thread-sleep! 1))
(else
(if (not (file-exists? (conc areapath"/logs")))
(create-directory (conc areapath"/logs") #t))
(let* ((logfile (conc areapath "/logs/server-"dbfname"-"(current-process-id)".log")) ;; -" curr-pid "-" target-host ".log"))
(cmdln (conc
mtexe
" -startdir "areapath
" -server - ";; (or target-host "-")
" -m testsuite:"testsuite
" -db "dbfname ;; (dbmod:run-id->dbfname run-id)
" " profile-mode
(conc " >> " logfile " 2>&1 &"))))
;; we want the remote server to start in *toppath* so push there
;; (push-directory areapath) ;; use cd in the command line instead
(debug:print 0 *default-log-port* "INFO: Trying to start server in tcp mode (" cmdln ") at "(common:human-time)" for "areapath)
;; (debug:print 0 *default-log-port* "INFO: starting server at " (common:human-time))
(system cmdln)
;; ;; use below to go back to nbfake - nbfake does cause trouble ...
;; (setenv "NBFAKE_QUIET" "yes") ;; BUG: change to with-environment-variable ...
;; (setenv "NBFAKE_LOG" logfile)
;; (system (conc "cd "areapath" ; nbfake " cmdln))
;; (unsetenv "NBFAKE_QUIET")
;; (unsetenv "NBFAKE_LOG")
;;(pop-directory)
)))))
;;======================================================================
;; tcp connection stuff
;;======================================================================
;; find a port and start tcp-server. This only starts the tcp portion of
;; the server, look at (tt:start-server ...) above for the entry point
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(string->number pid)
dbfname
logf))
(else
(debug:print 0 *default-log-port* "ERROR: did not recognise SERVER line info "mlst)
bad-dat)))))))))
(define *last-server-start* (make-hash-table))
(define (tt:too-recent-server-start dbfname)
(let* ((last-run-time (hash-table-ref/default *last-server-start* dbfname #f)))
(and last-run-time
(< (- (current-seconds) last-run-time) 5))))
;; Given an area path, start a server process ### NOTE ### > file 2>&1
;; if the target-host is set
;; try running on that host
;; incidental: rotate logs in logs/ dir.
;;
(define (tt:server-process-run areapath testsuite mtexe run-id #!key (profile-mode "")) ;; areapath is *toppath* for a given testsuite area
(assert areapath "FATAL: tt:server-process-run called without areapath defined.")
(assert testsuite "FATAL: tt:server-process-run called without testsuite defined.")
(assert mtexe "FATAL: tt:server-process-run called without mtexe defined.")
;; mtest -server - -m testsuite:ext-tests -db 6.db
(let* ((dbfname (dbmod:run-id->dbfname run-id)))
(if (tt:too-recent-server-start dbfname)
#f
(let* ((load (get-normalized-cpu-load))
(srvrs (tt:find-server areapath dbfname))
(trying (length srvrs))
(nrun (number-of-processes-running (conc "mtest.*server.*"testsuite".*"dbfname))))
(cond
((> load 2.0)
(debug:print 0 *default-log-port* "Normalized load "load" on " (get-host-name) " is over the limit of 2.0. Not starting a server. Please reduce the load on "(get-host-name)" by killing some processes")
(thread-sleep! 1)
#f)
((> nrun 100)
(debug:print 0 *default-log-port* nrun" servers running on " (get-host-name) ", not starting another.")
(thread-sleep! 1)
#f)
((> trying 2)
(debug:print 0 *default-log-port* trying" servers registered in .servinfo dir. not starting another.")
(thread-sleep! 1)
#f)
(else
(if (not (file-exists? (conc areapath"/logs")))
(create-directory (conc areapath"/logs") #t))
(let* ((logfile (conc areapath "/logs/server-"dbfname"-"(current-process-id)".log")) ;; -" curr-pid "-" target-host ".log"))
(cmdln (conc
mtexe
" -startdir "areapath
" -server - ";; (or target-host "-")
" -m testsuite:"testsuite
" -db "dbfname ;; (dbmod:run-id->dbfname run-id)
" " profile-mode
(conc " >> " logfile " 2>&1 &"))))
;; we want the remote server to start in *toppath* so push there
;; (push-directory areapath) ;; use cd in the command line instead
(debug:print 2 *default-log-port* "INFO: Trying to start server in tcp mode (" cmdln ") at "(common:human-time)" for "areapath)
;; (debug:print 0 *default-log-port* "INFO: starting server at " (common:human-time))
(system cmdln)
(hash-table-set! *last-server-start* dbfname (current-seconds))
;; ;; use below to go back to nbfake - nbfake does cause trouble ...
;; (setenv "NBFAKE_QUIET" "yes") ;; BUG: change to with-environment-variable ...
;; (setenv "NBFAKE_LOG" logfile)
;; (system (conc "cd "areapath" ; nbfake " cmdln))
;; (unsetenv "NBFAKE_QUIET")
;; (unsetenv "NBFAKE_LOG")
;;(pop-directory)
#t)))))))
;;======================================================================
;; tcp connection stuff
;;======================================================================
;; find a port and start tcp-server. This only starts the tcp portion of
;; the server, look at (tt:start-server ...) above for the entry point
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| ︙ | | | ︙ | |