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add versioning/README.md

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Former-commit-id: 7ea92fadc982038533675996704b6bf89e149aae
This commit is contained in:
Gerasimos (Makis) Maropoulos
2018-11-11 02:18:19 +02:00
parent fc9e5b3c05
commit 70610af6fd
3 changed files with 131 additions and 23 deletions
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24
versioning/versioning.go
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@@ -6,6 +6,24 @@ import (
"github.com/hashicorp/go-version"
)
func If(v string, is string) bool {
ver, err := version.NewVersion(v)
if err != nil {
return false
}
constraints, err := version.NewConstraint(is)
if err != nil {
return false
}
return constraints.Check(ver)
}
func Match(ctx context.Context, expectedVersion string) bool {
return If(GetVersion(ctx), expectedVersion)
}
type Map map[string]context.Handler
func NewMatcher(versions Map) context.Handler {
@@ -18,15 +36,15 @@ func NewMatcher(versions Map) context.Handler {
return
}
version, err := version.NewVersion(versionString)
ver, err := version.NewVersion(versionString)
if err != nil {
notFoundHandler(ctx)
return
}
for _, ch := range constraintsHandlers {
if ch.constraints.Check(version) {
ctx.Header("X-API-Version", version.String())
if ch.constraints.Check(ver) {
ctx.Header("X-API-Version", ver.String())
ch.handler(ctx)
return
}