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versioning API: initialize support for grouping

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Former-commit-id: 36cf8cd79801e8556f3c7b560f3bd759d9770d67
This commit is contained in:
Gerasimos (Makis) Maropoulos
2018-11-10 23:29:24 +02:00
parent b22a18da6b
commit 7608873e70
6 changed files with 314 additions and 28 deletions
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9
versioning/versioning.go
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@@ -8,7 +8,7 @@ import (
type Map map[string]context.Handler
func Handler(versions Map) context.Handler {
func NewMatcher(versions Map) context.Handler {
constraintsHandlers, notFoundHandler := buildConstraints(versions)
return func(ctx context.Context) {
@@ -32,6 +32,9 @@ func Handler(versions Map) context.Handler {
}
}
// pass the not matched version so the not found handler can have knowedge about it.
// ctx.Values().Set(Key, versionString)
// or let a manual cal of GetVersion(ctx) do that instead.
notFoundHandler(ctx)
}
}
@@ -68,14 +71,14 @@ func buildConstraints(versionsHandler Map) (constraintsHandlers []*constraintsHa
// >= 3.0, < 4.0.
// I can make it ordered but I do NOT like the final API of it:
/*
app.Get("/api/user", Handler( // accepts an array, ordered, see last elem.
app.Get("/api/user", NewMatcher( // accepts an array, ordered, see last elem.
V("1.0", vHandler("v1 here")),
V("2.0", vHandler("v2 here")),
V("< 4.0", vHandler("v3.x here")),
))
instead we have:
app.Get("/api/user", Handler(Map{ // accepts a map, unordered, see last elem.
app.Get("/api/user", NewMatcher(Map{ // accepts a map, unordered, see last elem.
"1.0": Deprecated(vHandler("v1 here")),
"2.0": vHandler("v2 here"),
">= 3.0, < 4.0": vHandler("v3.x here"),