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resources: Polish the password PoC and build out send/recv

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This polishes the password resource so that it can actually avoid
writing the password to disk, and so that the work actually happens in
CheckApply where it can properly interact with the graph. This resource
now re-generates the password when it receives a notification.

The send/recv plumbing has been extended so that receivers can detect
when they're receiving new values. This is particularly important if
they might otherwise not expect those values to change and cache them
for efficiency purposes.
This commit is contained in:
James Shubin
2016-12-06 02:25:34 -05:00
parent 2b47d7494e
commit 597ed6eaa0
9 changed files with 225 additions and 107 deletions
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14
resources/resources.go
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@@ -134,10 +134,10 @@ type Base interface {
SetState(ResState)
DoSend(chan event.Event, string) (bool, error)
SendEvent(event.EventName, bool, bool) bool
ReadEvent(*event.Event) (bool, bool) // TODO: optional here?
Refresh() bool // is there a pending refresh to run?
SetRefresh(bool) // set the refresh state of this resource
SendRecv(Res) (bool, error) // send->recv data passing function
ReadEvent(*event.Event) (bool, bool) // TODO: optional here?
Refresh() bool // is there a pending refresh to run?
SetRefresh(bool) // set the refresh state of this resource
SendRecv(Res) (map[string]bool, error) // send->recv data passing function
IsStateOK() bool
StateOK(b bool)
GroupCmp(Res) bool // TODO: is there a better name for this?
@@ -164,9 +164,9 @@ type Res interface {
// BaseRes is the base struct that gets used in every resource.
type BaseRes struct {
Name string `yaml:"name"`
MetaParams MetaParams `yaml:"meta"` // struct of all the metaparams
Recv map[string]Send // mapping of key to receive on from value
Name string `yaml:"name"`
MetaParams MetaParams `yaml:"meta"` // struct of all the metaparams
Recv map[string]*Send // mapping of key to receive on from value
kind string
events chan event.Event