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authorChristopher Baines <mail@cbaines.net>2017-06-24 14:19:46 +0100
committerChristopher Baines <mail@cbaines.net>2017-07-29 12:45:03 +0100
commit730ed6ec8b69a0f908a8aadbbe0555dd45de227c (patch)
tree68448b94cc257c8b034a668ca6b45f4712e7b86b /gnu/services/admin.scm
parentb5244fcb49804922e34fffb18d71908dac37b303 (diff)
gnu: services: admin: Add tailon.
* gnu/services/admin.scm (<tailon-configuration>, <tailon-configuration-file>): New record types. (tailon-configuration-files-string, tailon-shepherd-service): New procedures. (%tailon-accounts, tailon-service-type: New variables. * doc/guix.texi (Monitoring Services: Document the Tailon service. * gnu/local.mk (GNU_SYSTEM_MODULES): Add gnu/tests/admin.scm. * gnu/tests/admin.scm: New file.
Diffstat (limited to 'gnu/services/admin.scm')
-rw-r--r--gnu/services/admin.scm151
1 files changed, 150 insertions, 1 deletions
diff --git a/gnu/services/admin.scm b/gnu/services/admin.scm
index b9e3fa70a4..1044833fef 100644
--- a/gnu/services/admin.scm
+++ b/gnu/services/admin.scm
@@ -20,14 +20,19 @@
(define-module (gnu services admin)
#:use-module (gnu packages admin)
#:use-module (gnu packages base)
+ #:use-module (gnu packages logging)
#:use-module (gnu services)
#:use-module (gnu services mcron)
#:use-module (gnu services shepherd)
+ #:use-module (gnu services web)
+ #:use-module (gnu system shadow)
#:use-module (guix gexp)
+ #:use-module (guix store)
#:use-module (guix packages)
#:use-module (guix records)
#:use-module (srfi srfi-1)
#:use-module (ice-9 vlist)
+ #:use-module (ice-9 match)
#:export (%default-rotations
%rotated-files
@@ -41,7 +46,27 @@
rottlog-configuration
rottlog-configuration?
rottlog-service
- rottlog-service-type))
+ rottlog-service-type
+
+ <tailon-configuration-file>
+ tailon-configuration-file
+ tailon-configuration-file?
+ tailon-configuration-file-files
+ tailon-configuration-file-bind
+ tailon-configuration-file-relative-root
+ tailon-configuration-file-allow-transfers?
+ tailon-configuration-file-follow-names?
+ tailon-configuration-file-tail-lines
+ tailon-configuration-file-allowed-commands
+ tailon-configuration-file-debug?
+
+ <tailon-configuration>
+ tailon-configuration
+ tailon-configuration?
+ tailon-configuration-config-file
+ tailon-configuration-package
+
+ tailon-service-type))
;;; Commentary:
;;;
@@ -172,4 +197,128 @@ for ROTATION."
rotations)))))
(default-value (rottlog-configuration))))
+
+;;;
+;;; Tailon
+;;;
+
+(define-record-type* <tailon-configuration-file>
+ tailon-configuration-file make-tailon-configuration-file
+ tailon-configuration-file?
+ (files tailon-configuration-file-files
+ (default '("/var/log")))
+ (bind tailon-configuration-file-bind
+ (default "localhost:8080"))
+ (relative-root tailon-configuration-file-relative-root
+ (default #f))
+ (allow-transfers? tailon-configuration-file-allow-transfers?
+ (default #t))
+ (follow-names? tailon-configuration-file-follow-names?
+ (default #t))
+ (tail-lines tailon-configuration-file-tail-lines
+ (default 200))
+ (allowed-commands tailon-configuration-file-allowed-commands
+ (default '("tail" "grep" "awk")))
+ (debug? tailon-configuration-file-debug?
+ (default #f)))
+
+(define (tailon-configuration-files-string files)
+ (string-append
+ "\n"
+ (string-join
+ (map
+ (lambda (x)
+ (string-append
+ " - "
+ (cond
+ ((string? x)
+ (simple-format #f "'~A'" x))
+ ((list? x)
+ (string-join
+ (cons (simple-format #f "'~A':" (car x))
+ (map
+ (lambda (x) (simple-format #f " - '~A'" x))
+ (cdr x)))
+ "\n"))
+ (else (error x)))))
+ files)
+ "\n")))
+
+(define-gexp-compiler (tailon-configuration-file-compiler
+ (file <tailon-configuration-file>) system target)
+ (match file
+ (($ <tailon-configuration-file> files bind relative-root
+ allow-transfers? follow-names?
+ tail-lines allowed-commands debug?)
+ (text-file
+ "tailon-config.yaml"
+ (string-concatenate
+ (filter-map
+ (match-lambda
+ ((key . #f) #f)
+ ((key . value) (string-append key ": " value "\n")))
+
+ `(("files" . ,(tailon-configuration-files-string files))
+ ("bind" . ,bind)
+ ("relative-root" . ,relative-root)
+ ("allow-transfers" . ,(if allow-transfers? "true" "false"))
+ ("follow-names" . ,(if follow-names? "true" "false"))
+ ("tail-lines" . ,(number->string tail-lines))
+ ("commands" . ,(string-append "["
+ (string-join allowed-commands ", ")
+ "]"))
+ ,@(if debug? '(("debug" . "true")) '()))))))))
+
+(define-record-type* <tailon-configuration>
+ tailon-configuration make-tailon-configuration
+ tailon-configuration?
+ (config-file tailon-configuration-config-file
+ (default (tailon-configuration-file)))
+ (package tailon-configuration-package
+ (default tailon)))
+
+(define tailon-shepherd-service
+ (match-lambda
+ (($ <tailon-configuration> config-file package)
+ (list (shepherd-service
+ (provision '(tailon))
+ (documentation "Run the tailon daemon.")
+ (start #~(make-forkexec-constructor
+ `(,(string-append #$package "/bin/tailon")
+ "-c" ,#$config-file)
+ #:user "tailon"
+ #:group "tailon"))
+ (stop #~(make-kill-destructor)))))))
+
+(define %tailon-accounts
+ (list (user-group (name "tailon") (system? #t))
+ (user-account
+ (name "tailon")
+ (group "tailon")
+ (system? #t)
+ (comment "tailon")
+ (home-directory "/var/empty")
+ (shell (file-append shadow "/sbin/nologin")))))
+
+(define tailon-service-type
+ (service-type
+ (name 'tailon)
+ (extensions
+ (list (service-extension shepherd-root-service-type
+ tailon-shepherd-service)
+ (service-extension account-service-type
+ (const %tailon-accounts))))
+ (compose concatenate)
+ (extend (lambda (parameter files)
+ (tailon-configuration
+ (inherit parameter)
+ (config-file
+ (let ((old-config-file
+ (tailon-configuration-config-file parameter)))
+ (tailon-configuration-file
+ (inherit old-config-file)
+ (files (append (tailon-configuration-file-files old-config-file)
+ files))))))))
+ (default-value (tailon-configuration))))
+
;;; admin.scm ends here