diff options
Diffstat (limited to 'src/deployment.lisp')
| -rw-r--r-- | src/deployment.lisp | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/src/deployment.lisp b/src/deployment.lisp index 395cec8..4aef20f 100644 --- a/src/deployment.lisp +++ b/src/deployment.lisp @@ -108,9 +108,20 @@ DEFHOST forms can override earlier entries (see DEFHOST's docstring)." (eval-propspec-hostattrs ,propspec)) (deploy* ',connection ,new-host)))) -;; this is the main do-work loop for Consfigurator; remote Lisp images are -;; instructed to pick up the remaining work of this loop (defun deploy* (connections host) + "Execute the deployment which is defined by the pair (CONNECTIONS . HOST). + +This is the entry point to Consfigurator's primary loop. Typically users use +DEPLOY, DEPLOY-THESE, and the function definitions established by DEFDEPLOY, +DEFDEPLOY-THESE, etc., rather than calling this function. However, code which +programmatically constructs deployments will need to call this function. + +Unlike DEPLOY there is no argument to supply additional properties, and there +is no function DEPLOY-THESE*. This is because merging/replacing properties +into HOST's propspec cannot be done without either the implicit context +established by a consfig (specifically, by IN-CONSFIG) or with an explicit +specification of the SYSTEMS slot of the resultant property application +specification." ;; make a partial own-copy of HOST so that connections can add new pieces of ;; required prerequisite data; specifically, so that they can request the ;; source code of ASDF systems @@ -120,8 +131,8 @@ DEFHOST forms can override earlier entries (see DEFHOST's docstring)." (labels ((connect (connections) (destructuring-bind ((type . args) . remaining) connections - ;; implementations of ESTABLISH-CONNECTION return nil if they - ;; have handed off to a remote Lisp image + ;; implementations of ESTABLISH-CONNECTION which call + ;; CONTINUE-DEPLOY* or CONTINUE-DEPLOY*-PROGRAM return nil to us (when-let ((*connection* (apply #'establish-connection type remaining args))) (if remaining @@ -132,6 +143,15 @@ DEFHOST forms can override earlier entries (see DEFHOST's docstring)." collect (apply #'preprocess-connection-args (ensure-cons connection))))))) +;; we can't just default CONNECTIONS to :LOCAL in the lambda list, because it +;; is legitimate for callers to explicitly pass nil +(defun continue-deploy* (remaining-connections) + "Complete the work of an enclosing call to DEPLOY*. + +Used by implementations of ESTABLISH-CONNECTION which need to do something like +fork(2) and then return to Consfigurator's primary loop in the child." + (deploy* (or remaining-connections :local) *host*)) + ;; these might need to be special-cased in parsing propspecs, because we ;; probably want it to be easy for the user to pass unevaluated propspecs to ;; these, but we want the evaluation to happen in the root Lisp. |