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Refine approach to services

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Tony Garnock-Jones 9 months ago
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  1. 6
      schema-bundle.bin
  2. 47
      schemas/service.prs

6
schema-bundle.bin

@ -8,9 +8,9 @@ ByteString @@ -8,9 +8,9 @@ ByteString
TAttenuate´³refµ„³
TAttenuate„„µ±TRef´³refµ„³TRef„„µ±Lit´³refµ„³Lit„„µ± TCompound´³refµ„³ TCompound„„„„³ PCompound´³rec´³lit³compound„´³tupleµ´³named³ctor´³refµ„³ConstructorSpec„„´³named³members´³refµ„³PCompoundMembers„„„„„³ PEmbedded´³lit³Embedded„³ SturdyRef´³rec´³lit³ref„´³tupleµ´³named³oid³any„´³named³ caveatChain´³seqof´³refµ„³ Attenuation„„„´³named³sig´³atom³
ByteString„„„„„³ TCompound´³rec´³lit³compound„´³tupleµ´³named³ctor´³refµ„³ConstructorSpec„„´³named³members´³refµ„³TCompoundMembers„„„„„³
TAttenuate´³rec´³lit³ attenuate„´³tupleµ´³named³template´³refµ„³Template„„´³named³ attenuation´³refµ„³ Attenuation„„„„„³ Attenuation´³seqof´³refµ„³Caveat„„³ConstructorSpec´³orµµ±CRec´³refµ„³CRec„„µ±CArr´³refµ„³CArr„„µ±CDict´³refµ„³CDict„„„„³PCompoundMembers´³dictof³any´³refµ„³Pattern„„³TCompoundMembers´³dictof³any´³refµ„³Template„„„³ embeddedType´³refµ³ EntityRef„³Cap„„„µ³worker„´³schema·³version‘³ definitions·³Instance´³rec´³lit³Instance„´³tupleµ´³named³name´³atom³String„„´³named³argument³any„„„„„³ embeddedType´³refµ³ EntityRef„³Cap„„„µ³service„´³schema·³version‘³ definitions·³Dependee´³orµµ±ServiceStarted´³refµ„³ServiceStarted„„µ±ServiceRunning´³refµ„³ServiceRunning„„„„³
RunService´³rec´³lit³ run-service„´³tupleµ´³named³ serviceName³any„„„„³RequireService´³rec´³lit³require-service„´³tupleµ´³named³ serviceName³any„„„„³ServiceRunning´³rec´³lit³service-running„´³tupleµ´³named³ serviceName³any„„„„³ServiceStarted´³rec´³lit³service-started„´³tupleµ´³named³ serviceName³any„„„„³ServiceMilestone´³rec´³lit³service-milestone„´³tupleµ´³named³ serviceName³any„´³named³ milestonany„„„„³ServiceDependency´³rec´³lit³
depends-on„´³tupleµ´³named³depender³any„´³named³dependee´³refµ„³Dependee„„„„„„³ embeddedType´³refµ³ EntityRef„³Cap„„„µ³protocol„´³schema·³version‘³ definitions·³Oid´³atom³ SignedInteger„³Sync´³rec´³lit³sync„´³tupleµ´³named³peer´³embedded´³lit<EFBFBD>„„„„„„³Turn´³seqof´³refµ„³ TurnEvent„„³Error´³rec´³lit³error„´³tupleµ´³named³message´³atom³String„„´³named³detail³any„„„„³Event´³orµµ±Assert´³refµ„³Assert„„µ±Retract´³refµ„³Retract„„µ±Message´³refµ„³Message„„µ±Sync´³refµ„³Sync„„„„³Assert´³rec´³lit³assert„´³tupleµ´³named³ assertion´³refµ„³ Assertion„„´³named³handle´³refµ„³Handle„„„„„³Handle´³atom³ SignedInteger„³Packet´³orµµ±Turn´³refµ„³Turn„„µ±Error´³refµ„³Error„„„„³Message´³rec´³lit³message„´³tupleµ´³named³body´³refµ„³ Assertion„„„„„³Retract´³rec´³lit³retract„´³tupleµ´³named³handle´³refµ„³Handle„„„„„³ Assertion³any³ TurnEvent´³tupleµ´³named³oid´³refµ„³Oid„„´³named³event´³refµ„³Event„„„„„³ embeddedType€„„µ³ dataspace„´³schema·³version‘³ definitions·³Observe´³rec´³lit³Observe„´³tupleµ´³named³pattern´³refµ³dataspacePatterns„³Pattern„„´³named³observer´³embedded³any„„„„„„³ embeddedType´³refµ³ EntityRef„³Cap„„„µ³
TAttenuate´³rec´³lit³ attenuate„´³tupleµ´³named³template´³refµ„³Template„„´³named³ attenuation´³refµ„³ Attenuation„„„„„³ Attenuation´³seqof´³refµ„³Caveat„„³ConstructorSpec´³orµµ±CRec´³refµ„³CRec„„µ±CArr´³refµ„³CArr„„µ±CDict´³refµ„³CDict„„„„³PCompoundMembers´³dictof³any´³refµ„³Pattern„„³TCompoundMembers´³dictof³any´³refµ„³Template„„„³ embeddedType´³refµ³ EntityRef„³Cap„„„µ³worker„´³schema·³version‘³ definitions·³Instance´³rec´³lit³Instance„´³tupleµ´³named³name´³atom³String„„´³named³argument³any„„„„„³ embeddedType´³refµ³ EntityRef„³Cap„„„µ³service„´³schema·³version‘³ definitions·³State´³orµµ±started´³refµ„³started„„µ±ready´³refµ„³ready„„µ±failed´³refµ„³failed„„µ±complete´³refµ„³complete„„„„³
RunService´³rec´³lit³ run-service„´³tupleµ´³named³ serviceName³any„„„„³ ServiceState´³rec´³lit³ service-state„´³tupleµ´³named³ serviceName³any„´³named³state´³refµ„³State„„„„„³RequireService´³rec´³lit³require-service„´³tupleµ´³named³ serviceName³any„„„„³ServiceMilestone´³rec´³lit³ core-service„´³tupleµ´³named³ serviceNamany„„„„³ServiceDependency´³rec´³lit³
depends-on„´³tupleµ´³named³depender³any„´³named³dependee´³refµ„³ ServiceState„„„„„„³ embeddedType´³refµ³ EntityRef„³Cap„„„µ³protocol„´³schema·³version‘³ definitions·³Oid´³atom³ SignedInteger„³Sync´³rec´³lit³sync„´³tupleµ´³named³peer´³embedded´³lit<EFBFBD>„„„„„„³Turn´³seqof´³refµ„³ TurnEvent„„³Error´³rec´³lit³error„´³tupleµ´³named³message´³atom³String„„´³named³detail³any„„„„³Event´³orµµ±Assert´³refµ„³Assert„„µ±Retract´³refµ„³Retract„„µ±Message´³refµ„³Message„„µ±Sync´³refµ„³Sync„„„„³Assert´³rec´³lit³assert„´³tupleµ´³named³ assertion´³refµ„³ Assertion„„´³named³handle´³refµ„³Handle„„„„„³Handle´³atom³ SignedInteger„³Packet´³orµµ±Turn´³refµ„³Turn„„µ±Error´³refµ„³Error„„„„³Message´³rec´³lit³message„´³tupleµ´³named³body´³refµ„³ Assertion„„„„„³Retract´³rec´³lit³retract„´³tupleµ´³named³handle´³refµ„³Handle„„„„„³ Assertion³any³ TurnEvent´³tupleµ´³named³oid´³refµ„³Oid„„´³named³event´³refµ„³Event„„„„„³ embeddedType€„„µ³ dataspace„´³schema·³version‘³ definitions·³Observe´³rec´³lit³Observe„´³tupleµ´³named³pattern´³refµ³dataspacePatterns„³Pattern„„´³named³observer´³embedded³any„„„„„„³ embeddedType´³refµ³ EntityRef„³Cap„„„µ³
gatekeeper„´³schema·³version‘³ definitions·³Bind´³rec´³lit³bind„´³tupleµ´³named³oid³any„´³named³key´³atom³
ByteString„„´³named³target´³embedded³any„„„„„³Resolve´³rec´³lit³resolve„´³tupleµ´³named³ sturdyref´³refµ³sturdy„³ SturdyRef„„´³named³observer´³embedded´³embedded³any„„„„„„„³ embeddedType´³refµ³ EntityRef„³Cap„„„µ³ racketEvent„´³schema·³version‘³ definitions·³ RacketEvent´³rec´³lit³ racket-event„´³tupleµ´³named³source´³embedded³any„„´³named³event´³embedded³any„„„„„„³ embeddedType€„„µ³transportAddress„´³schema·³version‘³ definitions·³Tcp´³rec´³lit³tcp„´³tupleµ´³named³host´³atom³String„„´³named³port´³atom³ SignedInteger„„„„„³Unix´³rec´³lit³unix„´³tupleµ´³named³path´³atom³String„„„„„³Stdio´³rec´³lit³stdio„´³tupleµ„„„³ WebSocket´³rec´³lit³ws„´³tupleµ´³named³url´³atom³String„„„„„„³ embeddedType€„„µ³dataspacePatterns„´³schema·³version‘³ definitions·³CArr´³rec´³lit³arr„´³tupleµ´³named³arity´³atom³ SignedInteger„„„„„³CRec´³rec´³lit³rec„´³tupleµ´³named³label³any„´³named³arity´³atom³ SignedInteger„„„„„³DLit´³rec´³lit³lit„´³tupleµ´³named³value³any„„„„³CDict´³rec´³lit³dict„´³tupleµ„„„³DBind´³rec´³lit³bind„´³tupleµ´³named³pattern´³refµ„³Pattern„„„„„³Pattern´³orµµ±DDiscard´³refµ„³DDiscard„„µ±DBind´³refµ„³DBind„„µ±DLit´³refµ„³DLit„„µ± DCompound´³refµ„³ DCompound„„„„³DDiscard´³rec´³lit³_„´³tupleµ„„„³ DCompound´³orµµ±rec´³rec´³lit³compound„´³tupleµ´³named³ctor´³refµ„³CRec„„´³named³members´³dictof´³atom³ SignedInteger„´³refµ„³Pattern„„„„„„„µ±arr´³rec´³lit³compound„´³tupleµ´³named³ctor´³refµ„³CArr„„´³named³members´³dictof´³atom³ SignedInteger„´³refµ„³Pattern„„„„„„„µ±dict´³rec´³lit³compound„´³tupleµ´³named³ctor´³refµ„³CDict„„´³named³members´³dictof³any´³refµ„³Pattern„„„„„„„„„„³ embeddedType´³refµ³ EntityRef„³Cap„„„µ³secureChatProtocol„´³schema·³version‘³ definitions·³Join´³rec´³lit³
joinedUser„´³tupleµ´³named³uid´³refµ„³UserId„„´³named³handle´³embedded´³refµ„³Session„„„„„„³Says´³rec´³lit³says„´³tupleµ´³named³who´³refµ„³UserId„„´³named³what´³atom³String„„„„„³UserId´³atom³ SignedInteger„³Session´³orµµ± observeUsers´³rec´³lit³Observe„´³tupleµ´³lit³user„´³named³observer´³embedded´³refµ„³UserInfo„„„„„„„µ± observeSpeech´³rec´³lit³Observe„´³tupleµ´³lit³says„´³named³observer´³embedded´³refµ„³Says„„„„„„„µ± NickClaim´³refµ„³ NickClaim„„µ±Says´³refµ„³Says„„„„³UserInfo´³rec´³lit³user„´³tupleµ´³named³uid´³refµ„³UserId„„´³named³name´³atom³String„„„„„³ NickClaim´³rec´³lit³ claimNick„´³tupleµ´³named³uid´³refµ„³UserId„„´³named³name´³atom³String„„´³named³k´³embedded´³refµ„³NickClaimResponse„„„„„„³ NickConflict´³rec´³lit³ nickConflict„´³tupleµ„„„³NickClaimResponse´³orµµ±true´³lit<EFBFBD>„„µ± NickConflict´³refµ„³ NickConflict„„„„„³ embeddedType´³refµ³ EntityRef„³Cap„„„µ³simpleChatProtocol„´³schema·³version‘³ definitions·³Says´³rec´³lit³Says„´³tupleµ´³named³who´³atom³String„„´³named³what´³atom³String„„„„„³Present´³rec´³lit³Present„´³tupleµ´³named³username´³atom³String„„„„„„³ embeddedType´³refµ³ EntityRef„³Cap„„„„„

47
schemas/service.prs

@ -1,22 +1,45 @@ @@ -1,22 +1,45 @@
version 1 .
embeddedType EntityRef.Cap .
;Asserts that a service should begin (and stay) running after waiting for its dependencies and considering reverse-dependencies, blocks, and so on.
; Asserts that a service should begin (and stay) running after waiting
; for its dependencies and considering reverse-dependencies, blocks,
; and so on.
RequireService = <require-service @serviceName any>.
;Asserts that a service should begin (and stay) running RIGHT NOW, without considering its dependencies.
; Asserts that a service should begin (and stay) running RIGHT NOW,
; without considering its dependencies.
RunService = <run-service @serviceName any>.
;Asserts that the service has been started (but is not necessarily ready for use).
ServiceStarted = <service-started @serviceName any>.
; Asserts one or more current states of service `serviceName`. The
; overall state of the service is the union of asserted `state`s.
;
; Only a few combinations make sense:
; - `started`
; - `started` + `ready`
; - `failed`
; - `complete`
;
ServiceState = <service-state @serviceName any @state State>.
;Asserts that the service is ready for use.
ServiceRunning = <service-running @serviceName any>.
; Possible service states.
State =
/ ; The service has begun its startup routine, and may or may not be
; ready to take requests from other parties.
started
/ ; The service is ready to take requests from other parties.
; (This state is special in that it is asserted *in addition* to `started`.)
ready
/ ; The service has failed.
failed
/ ; The service has completed execution.
complete
.
;Asserts that `depender` can be considered started but not running until `dependee` is satisfied.
ServiceDependency = <depends-on @depender any @dependee Dependee>.
;Describes a relationship from a dependent to some a dependee service: has it started? is it ready?
Dependee = ServiceStarted / ServiceRunning .
; Asserts that, when `depender` is `require-service`d, it should not
; be started until `dependee` has been asserted.
ServiceDependency = <depends-on @depender any @dependee ServiceState>.
;Asserts that the service has the given milestone among its dependencies. If not otherwise specified, a service has the milestone `core` as a dependency.
ServiceMilestone = <service-milestone @serviceName any @milestone any>.
; Asserts that the service is a "core" service. If *not* specified for
; a service X, the system acts as if `<depends-on X <service-state
; <milestone core> running>>` were asserted.
ServiceMilestone = <core-service @serviceName any>.

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