github.com/m3db/m3@v1.5.0/src/dbnode/namespace/context.go

// Copyright (c) 2019 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

package namespace

import (
	"github.com/m3db/m3/src/x/ident"
)

type Context struct {
	ID     ident.ID
	Schema SchemaDescr
}

func NewContextFrom(nsMetadata Metadata) Context {
	ctx := Context{ID: nsMetadata.ID()}
	if schema, ok := nsMetadata.Options().SchemaHistory().GetLatest(); ok {
		ctx.Schema = schema
	}
	return ctx
}

func NewContextFor(id ident.ID, registry SchemaRegistry) Context {
	ctx := Context{ID: id}
	if schema, err := registry.GetLatestSchema(id); err == nil {
		ctx.Schema = schema
	}
	return ctx
}