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David ReissandGitHub
6176a74738
## What changed? - Add Subscribe method to dynamic config settings. - Support efficient notifications from FileBasedClient (old+new files are diffed and only changed keys are checked for subscriptions). - Move benchmark code to new file. - Change constrained defaults to pointer to slice since it's hardly ever used. ## Why? So that components can get notified on dynamic config changes instead of polling. ## How did you test it? unit tests
60 lines
2.5 KiB
Go
60 lines
2.5 KiB
Go
// The MIT License
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//
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// Copyright (c) 2020 Temporal Technologies Inc. All rights reserved.
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//
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// Copyright (c) 2020 Uber Technologies, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//go:generate go run ../../cmd/tools/gendynamicconfig
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package dynamicconfig
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type (
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// Precedence is an enum for the search order precedence of a dynamic config setting.
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// E.g., use the global value, check namespace then global, check task queue then
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// namespace then global, etc.
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Precedence int
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// setting is one dynamic config setting. setting should not be used or created directly,
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// but use one of the generated constructors for instantiated Setting types in
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// setting_gen.go, e.g. NewNamespaceBoolSetting.
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// T is the data type of the setting. P is a go type representing the precedence, which is
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// just used to make the types more unique.
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setting[T any, P any] struct {
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key Key // string value of key. case-insensitive.
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def T // default value. cdef is used in preference to def if non-nil.
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cdef *[]TypedConstrainedValue[T]
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convert func(any) (T, error) // converter function
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description string // documentation
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}
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// GenericSetting is an interface that all instances of Setting implement (by generated
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// code in setting_gen.go). It can be used to refer to settings of any type and deal with
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// them generically..
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GenericSetting interface {
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Key() Key
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Precedence() Precedence
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Validate(v any) error
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// for internal use:
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dispatchUpdate(*Collection, any, []ConstrainedValue)
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}
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)
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