forked from ungleich-public/cdist
139 lines
3.7 KiB
Text
139 lines
3.7 KiB
Text
2.1.0 behaviour:
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__git foo
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__package git --state present
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__git bar
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__package git --state present
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require="__git/foo" __git bar:
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__git bar
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__git foo
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__package git --state present
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__package git --state present
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__git foo <---|
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__package git --state present ---|
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-> detects circular dependency
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--------------------------------------------------------------------------------
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require="__apt_repository/somewhere-where-you-can-find-package-git __git/foo" __git bar
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__git bar
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__apt_repository somewhere-where-you-can-find-package-git
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__git foo
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__package git --state present
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__package_apt git depends nachher auf __apt_repository
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__package git --state present
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__git foo <---|
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__package git --state present ---|
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__apt_repository somewhere-where-you-can-find-package-git
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possible solutions:
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- __package git does not depend on __git foo (clear dependency)
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- because it DOES NOT depend on it!
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- but we don't know whether this is always true :-/
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- multiple instances of __package git exist, with
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- different required BY
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- different requirements
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- define non inheritent dependencies (?)
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- because __git bar really depends only on __git foo
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- proposal: introduce require_non_recursive and require_recursive (previously: require)
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- recording the source of the dependency and use it to assist resolving (?)
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__package git:
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inherited require: __git foo von __git bar
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__git foo:
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inherited autorequire: __package git durch Nutzung
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- break out circular references (?)
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- if either of both parties is only locked by the other, allow execution of this one?
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--------------------------------------------------------------------------------
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__package foo
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__package_apt foo
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__package bar
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__package_apt bar
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require="__package/foo" __package bar
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__package bar
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__package foo
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__package_apt foo
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__package_apt bar
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__package foo
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--------------------------------------------------------------------------------
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__type1 var1
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__type2 FIX
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__type1 var2
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__type2 FIX
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--------------------------------------------------------------------------------
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facts:
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- use is different from require="", as use makes USED depend on parent deps
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- use = called/defined in the manifest of a type
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- it is currently not recorded, where an object gained its requirements and autorequirements
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--------------------------------------------------------------------------------
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requirements:
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- a type should be a black box:
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I can require an object and it is ensured,
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everything it needs is executed before me.
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--------------------------------------------------------------------------------
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possible implementations
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- requiring it should include everything it USES
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--------------------------------------------------------------------------------
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solutions:
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__type1 DEPENDS but does not use __type2 FIX
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--------------------------------------------------------------------------------
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Change proposal:
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Each object only depends on the objects it directly requires, tree build to
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ensure correct running behaviour:
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__git bar
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__git foo
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__package git --state present
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__git foo
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__package git --state present
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Order:
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1)
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__package/git (leaf node!)
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2)
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__git/foo (new leaf node!)
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3)
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__git/bar (new leaf node!)
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For __package:
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__sometype bar
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__package foo
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__package foo
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__package_apt foo
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1) __package_apt/foo (leaf node)
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2) __package/foo (new leaf node)
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3) __sometype/bar (new leaf node)
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