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;;======================================================================
;; Copyright 2006-2012, Matthew Welland.
;;
;; This program is made available under the GNU GPL version 2.0 or
;; greater. See the accompanying file COPYING for details.
;;
;; This program is distributed WITHOUT ANY WARRANTY; without even the
;; implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
;; PURPOSE.
;;======================================================================
(use srfi-1 data-structures posix regex-case base64 format dot-locking csv-xml z3 sql-de-lite hostinfo md5 message-digest typed-records directory-utils stack
matchable)
(use srfi-1 data-structures posix regex-case (prefix base64 base64:)
format dot-locking csv-xml z3 ;; sql-de-lite
(require-extension regex posix)
(require-extension (srfi 18) extras tcp rpc)
(import (prefix sqlite3 sqlite3:))
hostinfo md5 message-digest typed-records directory-utils stack
matchable regex posix (srfi 18) extras ;; tcp
(prefix nanomsg nmsg:)
(prefix sqlite3 sqlite3:)
(import (prefix base64 base64:))
)
(declare (unit common))
(include "common_records.scm")
;; (require-library margs)
;; (include "margs.scm")
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fallback-launcher
(loop (car tal)(cdr tal)))))))
;; no match, try again
(if (null? tal)
fallback-launcher
(loop (car tal)(cdr tal))))))))
fallback-launcher)))
;;======================================================================
;; NMSG AND NEW API
;;======================================================================
;; nm based server
;;
(define (nm:start-server dbconn #!key (given-host-name #f))
(let* ((srvdat (start-raw-server given-host-name: given-host-name))
(host-name (srvdat-host srvdat))
(soc (srvdat-soc srvdat)))
;; start the queue processor (save for second round of development)
;;
;; (thread-start! (queue-processory dbconn) "Queue processor")
;; msg is an alist
;; 'r host:port <== where to return the data
;; 'p params <== data to apply the command to
;; 'e j|s|l <== encoding of the params. default is s (sexp), if not specified is assumed to be default
;; 'c command <== look up the function to call using this key
;;
(let loop ((msg-in (nn-recv soc)))
(if (not (equal? msg-in "quit"))
(let* ((dat (decode msg-in))
(host-port (alist-ref 'r dat)) ;; this is for the reverse req rep where the server is a client of the original client
(params (alist-ref 'p dat))
(command (let ((c (alist-ref 'c dat)))(if c (string->symbol c) #f)))
(all-good (and host-port params command (hash-table-exists? *commands* command))))
(if all-good
(let ((cmddat (make-qitem
command: command
host-port: host-port
params: params)))
(queue-push cmddat) ;; put request into the queue
(nn-send soc "queued")) ;; reply with "queued"
(print "ERROR: BAD request " dat))
(loop (nn-recv soc)))))
(nn-close soc)))
;;======================================================================
;; D A S H B O A R D U S E R V I E W S
;;======================================================================
;; first read ~/views.config if it exists, then read $MTRAH/views.config if it exists
;;
(define (common:load-views-config)
(let* ((view-cfgdat (make-hash-table))
(home-cfgfile (conc (get-environment-variable "HOME") "/.mtviews.config"))
(mthome-cfgfile (conc *toppath* "/.mtviews.config")))
(if (common:file-exists? mthome-cfgfile)
(read-config mthome-cfgfile view-cfgdat #t))
;; we load the home dir file AFTER the MTRAH file so the user can clobber settings when running the dashboard in read-only areas
(if (common:file-exists? home-cfgfile)
(read-config home-cfgfile view-cfgdat #t))
view-cfgdat))
;;======================================================================
;; H I E R A R C H I C A L H A S H T A B L E S
;;======================================================================
;; Every element including top element is a vector:
;; <vector subhash value>
(define (hh:make-hh #!key (ht #f)(value #f))
(vector (or ht (make-hash-table)) value))
;; used internally
(define-inline (hh:set-ht! hh ht) (vector-set! hh 0 ht))
(define-inline (hh:get-ht hh) (vector-ref hh 0))
(define-inline (hh:set-value! hh value) (vector-set! hh 1 value))
(define-inline (hh:get-value hh value) (vector-ref hh 1))
;; given a hierarchial hash and some keys look up the value ...
;;
(define (hh:get hh . keys)
(if (null? keys)
(vector-ref hh 1) ;; we have reached the end of the line, return the value sought
(let ((sub-ht (hh:get-ht hh)))
(if sub-ht ;; yes, there is more hierarchy
(let ((sub-hh (hash-table-ref/default sub-ht (car keys) #f)))
(if sub-hh
(apply hh:get sub-hh (cdr keys))
#f))
#f))))
;; given a hierarchial hash, a value and some keys, add needed hierarcy and insert the value
;;
(define (hh:set! hh value . keys)
(if (null? keys)
(hh:set-value! hh value) ;; we have reached the end of the line, store the value
(let ((sub-ht (hh:get-ht hh)))
(if sub-ht ;; yes, there is more hierarchy
(let ((sub-hh (hash-table-ref/default sub-ht (car keys) #f)))
(if (not sub-hh) ;; we'll need to add the next level of hierarchy
(let ((new-sub-hh (hh:make-hh)))
(hash-table-set! sub-ht (car keys) new-sub-hh)
(apply hh:set! new-sub-hh value (cdr keys)))
(apply hh:set! sub-hh value (cdr keys)))) ;; call the sub-hierhash with remaining keys
(begin
(hh:set-ht! hh (make-hash-table))
(apply hh:set! hh value keys))))))
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