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|
(import (prefix sqlite3 sqlite3:) posix typed-records srfi-18 srfi-69
format ports srfi-1 matchable regex directory-utils)
;; (import commonmod)
;; (use (prefix ulex ulex:))
(include "common_records.scm")
;; accept an alist or hash table containing envvar/env value pairs (value of #f causes unset)
;; execute thunk in context of environment modified as per this list
;; restore env to prior state then return value of eval'd thunk.
;; ** this is not thread safe **
(define (common:with-env-vars delta-env-alist-or-hash-table thunk)
(let* ((delta-env-alist (if (hash-table? delta-env-alist-or-hash-table)
(hash-table->alist delta-env-alist-or-hash-table)
delta-env-alist-or-hash-table))
(restore-thunks
(filter
identity
(map (lambda (env-pair)
(let* ((env-var (car env-pair))
(new-val (let ((tmp (cdr env-pair)))
(if (list? tmp) (car tmp) tmp)))
(current-val (get-environment-variable env-var))
(restore-thunk
(cond
((not current-val) (lambda () (unsetenv env-var)))
((not (string? new-val)) #f)
((eq? current-val new-val) #f)
(else
(lambda () (setenv env-var current-val))))))
;;(when (not (string? new-val))
;; (debug:print 0 *default-log-port* " PROBLEM: not a string: "new-val"\n from env-alist:\n"delta-env-alist)
;; (pp delta-env-alist)
;; (exit 1))
(cond
((not new-val) ;; modify env here
(unsetenv env-var))
((string? new-val)
(setenv env-var new-val)))
restore-thunk))
delta-env-alist))))
(let ((rv (thunk)))
(for-each (lambda (x) (x)) restore-thunks) ;; restore env to original state
rv)))
(define (process:conservative-read port)
(let loop ((res ""))
(if (not (eof-object? (peek-char port)))
(loop (conc res (read-char port)))
res)))
(define (process:cmd-run-with-stderr->list cmd . params)
;; (print "Called with cmd=" cmd ", proc=" proc ", params=" params)
;; (handle-exceptions
;; exn
;; (begin
;; (print "ERROR: Failed to run command: " cmd " " (string-intersperse params " "))
;; (print " " ((condition-property-accessor 'exn 'message) exn))
;; #f)
(let-values (((fh fho pid fhe) (if (null? params)
(process* cmd)
(process* cmd params))))
(let loop ((curr (read-line fh))
(result '()))
(let ((errstr (process:conservative-read fhe)))
(if (not (string=? errstr ""))
(set! result (append result (list errstr)))))
(if (not (eof-object? curr))
(loop (read-line fh)
(append result (list curr)))
(begin
(close-input-port fh)
(close-input-port fhe)
(close-output-port fho)
result))))) ;; )
(define (process:cmd-run-with-stderr-and-exitcode->list cmd . params)
;; (print "Called with cmd=" cmd ", proc=" proc ", params=" params)
;; (handle-exceptions
;; exn
;; (begin
;; (print "ERROR: Failed to run command: " cmd " " (string-intersperse params " "))
;; (print " " ((condition-property-accessor 'exn 'message) exn))
;; #f)
(let-values (((fh fho pid fhe) (if (null? params)
(process* cmd)
(process* cmd params))))
(let loop ((curr (read-line fh))
(result '()))
(let ((errstr (process:conservative-read fhe)))
(if (not (string=? errstr ""))
(set! result (append result (list errstr)))))
(if (not (eof-object? curr))
(loop (read-line fh)
(append result (list curr)))
(begin
(let-values (((anotherpid normalexit? exitstatus) (process-wait pid)))
(close-input-port fh)
(close-input-port fhe)
(close-output-port fho)
(list result (if normalexit? exitstatus -1))))))))
(define (process:cmd-run-proc-each-line cmd proc . params)
;; (print "Called with cmd=" cmd ", proc=" proc ", params=" params)
(handle-exceptions
exn
(begin
(print "ERROR: Failed to run command: " cmd " " (string-intersperse params " "))
(debug:print 0 *default-log-port* " message: " ((condition-property-accessor 'exn 'message) exn))
(debug:print 5 *default-log-port* "exn=" (condition->list exn))
#f)
(let-values (((fh fho pid) (if (null? params)
(process cmd)
(process cmd params))))
(let loop ((curr (read-line fh))
(result '()))
(if (not (eof-object? curr))
(loop (read-line fh)
(append result (list (proc curr))))
(begin
(close-input-port fh)
;; (close-input-port fhe)
(close-output-port fho)
result))))))
(define (process:cmd-run-proc-each-line-alt cmd proc)
(let* ((fh (open-input-pipe cmd))
(res (port-proc->list fh proc))
(status (close-input-pipe fh)))
(if (eq? status 0) res #f)))
(define (process:cmd-run->list cmd #!key (delta-env-alist-or-hash-table '()))
(common:with-env-vars
delta-env-alist-or-hash-table
(lambda ()
(let* ((fh (open-input-pipe cmd))
(res (port->list fh))
(status (close-input-pipe fh)))
(list res status)))))
(define (port->list fh)
(if (eof-object? fh) #f
(let loop ((curr (read-line fh))
(result '()))
(if (not (eof-object? curr))
(loop (read-line fh)
(append result (list curr)))
result))))
(define (port-proc->list fh proc)
(if (eof-object? fh) #f
(let loop ((curr (proc (read-line fh)))
(result '()))
(if (not (eof-object? curr))
(loop (let ((l (read-line fh)))
(if (eof-object? l) l (proc l)))
(append result (list curr)))
result))))
;; here is an example line where the shell is sh or bash
;; "find / -print 2&>1 > findall.log"
(define (run-n-wait cmdline #!key (params #f)(print-cmd #f)(run-dir #f))
(if print-cmd
(debug:print 0 *default-log-port*
(if (string? print-cmd)
print-cmd
"")
(if run-dir (conc "Run in " run-dir ";") "")
cmdline
(if params
(conc " " (string-intersperse params " "))
"")))
(if (and run-dir
(directory-exists? run-dir))
(push-directory run-dir))
(let ((pid (if params
(process-run cmdline params)
(process-run cmdline))))
(let loop ((i 0))
(let-values (((pid-val exit-status exit-code) (process-wait pid #t)))
(if (eq? pid-val 0)
(begin
(thread-sleep! 2)
(loop (+ i 1)))
(begin
(if (and run-dir
(directory-exists? run-dir))
(pop-directory))
(values pid-val exit-status exit-code)))))))
;;======================================================================
;; MISC PROCESS RELATED STUFF
;;======================================================================
(define (process:children proc)
(with-input-from-pipe
(conc "ps h --ppid " (current-process-id) " -o pid")
(lambda ()
(let loop ((inl (read-line))
(res '()))
(if (eof-object? inl)
(reverse res)
(let ((pid (string->number inl)))
(if proc (proc pid))
(loop (read-line) (cons pid res))))))))
(define (process:alive? pid)
(handle-exceptions
exn
;; possibly pid is a process not a child, look in /proc to see if it is running still
(file-exists? (conc "/proc/" pid))
(let-values (((rpid exit-type exit-signal)(process-wait pid #t)))
(and (number? rpid)
(equal? rpid pid)))))
(define (process:alive-on-host? host pid)
(let ((cmd (conc "ssh " host " ps -o pid= -p " pid)))
(handle-exceptions
exn
#f ;; anything goes wrong - assume the process in NOT running.
(with-input-from-pipe
cmd
(lambda ()
(let loop ((inl (read-line)))
(if (eof-object? inl)
#f
(let* ((clean-str (string-substitute "^[^\\d]*([0-9]+)[^\\d]*$" "\\1" inl))
(innum (string->number clean-str)))
(and innum
(eq? pid innum))))))))))
(define (process:get-sub-pids pid)
(with-input-from-pipe
(conc "pstree -A -p " pid) ;; | tr 'a-z\\-+`()\\.' ' ' " pid)
(lambda ()
(let loop ((inl (read-line))
(res '()))
(if (eof-object? inl)
(reverse res)
(let ((nums (map string->number
(string-split-fields "\\d+" inl))))
(loop (read-line)
(append res nums))))))))
;;
;;
;; ;; accept an alist or hash table containing envvar/env value pairs (value of #f causes unset)
;; ;; execute thunk in context of environment modified as per this list
;; ;; restore env to prior state then return value of eval'd thunk.
;; ;; ** this is not thread safe **
;; (define (common:with-env-vars delta-env-alist-or-hash-table thunk)
;; (let* ((delta-env-alist (if (hash-table? delta-env-alist-or-hash-table)
;; (hash-table->alist delta-env-alist-or-hash-table)
;; delta-env-alist-or-hash-table))
;; (restore-thunks
;; (filter
;; identity
;; (map (lambda (env-pair)
;; (let* ((env-var (car env-pair))
;; (new-val (let ((tmp (cdr env-pair)))
;; (if (list? tmp) (car tmp) tmp)))
;; (current-val (get-environment-variable env-var))
;; (restore-thunk
;; (cond
;; ((not current-val) (lambda () (unsetenv env-var)))
;; ((not (string? new-val)) #f)
;; ((eq? current-val new-val) #f)
;; (else
;; (lambda () (setenv env-var current-val))))))
;; ;;(when (not (string? new-val))
;; ;; (debug:print 0 *default-log-port* " PROBLEM: not a string: "new-val"\n from env-alist:\n"delta-env-alist)
;; ;; (pp delta-env-alist)
;; ;; (exit 1))
;;
;;
;; (cond
;; ((not new-val) ;; modify env here
;; (unsetenv env-var))
;; ((string? new-val)
;; (setenv env-var new-val)))
;; restore-thunk))
;; delta-env-alist))))
;; (let ((rv (thunk)))
;; (for-each (lambda (x) (x)) restore-thunks) ;; restore env to original state
;; rv)))
;;
;; (define (process:conservative-read port)
;; (let loop ((res ""))
;; (if (not (eof-object? (peek-char port)))
;; (loop (conc res (read-char port)))
;; res)))
;;
;; (define (process:cmd-run-with-stderr->list cmd . params)
;; ;; (print "Called with cmd=" cmd ", proc=" proc ", params=" params)
;; ;; (handle-exceptions
;; ;; exn
;; ;; (begin
;; ;; (print "ERROR: Failed to run command: " cmd " " (string-intersperse params " "))
;; ;; (print " " ((condition-property-accessor 'exn 'message) exn))
;; ;; #f)
;; (let-values (((fh fho pid fhe) (if (null? params)
;; (process* cmd)
;; (process* cmd params))))
;; (let loop ((curr (read-line fh))
;; (result '()))
;; (let ((errstr (process:conservative-read fhe)))
;; (if (not (string=? errstr ""))
;; (set! result (append result (list errstr)))))
;; (if (not (eof-object? curr))
;; (loop (read-line fh)
;; (append result (list curr)))
;; (begin
;; (close-input-port fh)
;; (close-input-port fhe)
;; (close-output-port fho)
;; result))))) ;; )
;;
;; (define (process:cmd-run-with-stderr-and-exitcode->list cmd . params)
;; ;; (print "Called with cmd=" cmd ", proc=" proc ", params=" params)
;; ;; (handle-exceptions
;; ;; exn
;; ;; (begin
;; ;; (print "ERROR: Failed to run command: " cmd " " (string-intersperse params " "))
;; ;; (print " " ((condition-property-accessor 'exn 'message) exn))
;; ;; #f)
;; (let-values (((fh fho pid fhe) (if (null? params)
;; (process* cmd)
;; (process* cmd params))))
;; (let loop ((curr (read-line fh))
;; (result '()))
;; (let ((errstr (process:conservative-read fhe)))
;; (if (not (string=? errstr ""))
;; (set! result (append result (list errstr)))))
;; (if (not (eof-object? curr))
;; (loop (read-line fh)
;; (append result (list curr)))
;; (begin
;; (let-values (((anotherpid normalexit? exitstatus) (process-wait pid)))
;; (close-input-port fh)
;; (close-input-port fhe)
;; (close-output-port fho)
;; (list result (if normalexit? exitstatus -1))))))))
;;
;; (define (process:cmd-run-proc-each-line cmd proc . params)
;; ;; (print "Called with cmd=" cmd ", proc=" proc ", params=" params)
;; (handle-exceptions
;; exn
;; (begin
;; (print "ERROR: Failed to run command: " cmd " " (string-intersperse params " "))
;; (debug:print 0 *default-log-port* " message: " ((condition-property-accessor 'exn 'message) exn))
;; (debug:print 5 *default-log-port* "exn=" (condition->list exn))
;; #f)
;; (let-values (((fh fho pid) (if (null? params)
;; (process cmd)
;; (process cmd params))))
;; (let loop ((curr (read-line fh))
;; (result '()))
;; (if (not (eof-object? curr))
;; (loop (read-line fh)
;; (append result (list (proc curr))))
;; (begin
;; (close-input-port fh)
;; ;; (close-input-port fhe)
;; (close-output-port fho)
;; result))))))
;;
;; (define (process:cmd-run-proc-each-line-alt cmd proc)
;; (let* ((fh (open-input-pipe cmd))
;; (res (port-proc->list fh proc))
;; (status (close-input-pipe fh)))
;; (if (eq? status 0) res #f)))
;;
;; (define (process:cmd-run->list cmd #!key (delta-env-alist-or-hash-table '()))
;; (common:with-env-vars
;; delta-env-alist-or-hash-table
;; (lambda ()
;; (let* ((fh (open-input-pipe cmd))
;; (res (port->list fh))
;; (status (close-input-pipe fh)))
;; (list res status)))))
;;
;; (define (port->list fh)
;; (if (eof-object? fh) #f
;; (let loop ((curr (read-line fh))
;; (result '()))
;; (if (not (eof-object? curr))
;; (loop (read-line fh)
;; (append result (list curr)))
;; result))))
;;
;; (define (port-proc->list fh proc)
;; (if (eof-object? fh) #f
;; (let loop ((curr (proc (read-line fh)))
;; (result '()))
;; (if (not (eof-object? curr))
;; (loop (let ((l (read-line fh)))
;; (if (eof-object? l) l (proc l)))
;; (append result (list curr)))
;; result))))
;;
;; ;; here is an example line where the shell is sh or bash
;; ;; "find / -print 2&>1 > findall.log"
;; (define (run-n-wait cmdline #!key (params #f)(print-cmd #f)(run-dir #f))
;; (if print-cmd
;; (debug:print 0 *default-log-port*
;; (if (string? print-cmd)
;; print-cmd
;; "")
;; (if run-dir (conc "Run in " run-dir ";") "")
;; cmdline
;; (if params
;; (conc " " (string-intersperse params " "))
;; "")))
;; (if (and run-dir
;; (directory-exists? run-dir))
;; (push-directory run-dir))
;; (let ((pid (if params
;; (process-run cmdline params)
;; (process-run cmdline))))
;; (let loop ((i 0))
;; (let-values (((pid-val exit-status exit-code) (process-wait pid #t)))
;; (if (eq? pid-val 0)
;; (begin
;; (thread-sleep! 2)
;; (loop (+ i 1)))
;; (begin
;; (if (and run-dir
;; (directory-exists? run-dir))
;; (pop-directory))
;; (values pid-val exit-status exit-code)))))))
;;
;; ;;======================================================================
;; ;; MISC PROCESS RELATED STUFF
;; ;;======================================================================
;;
;; (define (process:children proc)
;; (with-input-from-pipe
;; (conc "ps h --ppid " (current-process-id) " -o pid")
;; (lambda ()
;; (let loop ((inl (read-line))
;; (res '()))
;; (if (eof-object? inl)
;; (reverse res)
;; (let ((pid (string->number inl)))
;; (if proc (proc pid))
;; (loop (read-line) (cons pid res))))))))
;;
;; (define (process:alive? pid)
;; (handle-exceptions
;; exn
;; ;; possibly pid is a process not a child, look in /proc to see if it is running still
;; (file-exists? (conc "/proc/" pid))
;; (let-values (((rpid exit-type exit-signal)(process-wait pid #t)))
;; (and (number? rpid)
;; (equal? rpid pid)))))
;;
;; (define (process:alive-on-host? host pid)
;; (let ((cmd (conc "ssh " host " ps -o pid= -p " pid)))
;; (handle-exceptions
;; exn
;; #f ;; anything goes wrong - assume the process in NOT running.
;; (with-input-from-pipe
;; cmd
;; (lambda ()
;; (let loop ((inl (read-line)))
;; (if (eof-object? inl)
;; #f
;; (let* ((clean-str (string-substitute "^[^\\d]*([0-9]+)[^\\d]*$" "\\1" inl))
;; (innum (string->number clean-str)))
;; (and innum
;; (eq? pid innum))))))))))
;;
;; (define (process:get-sub-pids pid)
;; (with-input-from-pipe
;; (conc "pstree -A -p " pid) ;; | tr 'a-z\\-+`()\\.' ' ' " pid)
;; (lambda ()
;; (let loop ((inl (read-line))
;; (res '()))
;; (if (eof-object? inl)
;; (reverse res)
;; (let ((nums (map string->number
;; (string-split-fields "\\d+" inl))))
;; (loop (read-line)
;; (append res nums))))))))
)
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