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94 lines
2.7 KiB
94 lines
2.7 KiB
// Copyright (c) 2019 Couchbase, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package scorch
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import (
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"fmt"
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"github.com/blevesearch/bleve/index/scorch/segment"
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zapv11 "github.com/blevesearch/zap/v11"
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zapv12 "github.com/blevesearch/zap/v12"
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zapv13 "github.com/blevesearch/zap/v13"
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zapv14 "github.com/blevesearch/zap/v14"
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zapv15 "github.com/blevesearch/zap/v15"
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)
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var supportedSegmentPlugins map[string]map[uint32]segment.Plugin
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var defaultSegmentPlugin segment.Plugin
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func init() {
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ResetPlugins()
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RegisterPlugin(zapv15.Plugin(), false)
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RegisterPlugin(zapv14.Plugin(), false)
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RegisterPlugin(zapv13.Plugin(), false)
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RegisterPlugin(zapv12.Plugin(), false)
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RegisterPlugin(zapv11.Plugin(), true)
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}
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func ResetPlugins() {
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supportedSegmentPlugins = map[string]map[uint32]segment.Plugin{}
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}
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func RegisterPlugin(plugin segment.Plugin, makeDefault bool) {
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if _, ok := supportedSegmentPlugins[plugin.Type()]; !ok {
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supportedSegmentPlugins[plugin.Type()] = map[uint32]segment.Plugin{}
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}
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supportedSegmentPlugins[plugin.Type()][plugin.Version()] = plugin
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if makeDefault {
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defaultSegmentPlugin = plugin
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}
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}
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func SupportedSegmentTypes() (rv []string) {
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for k := range supportedSegmentPlugins {
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rv = append(rv, k)
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}
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return
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}
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func SupportedSegmentTypeVersions(typ string) (rv []uint32) {
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for k := range supportedSegmentPlugins[typ] {
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rv = append(rv, k)
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}
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return rv
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}
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func chooseSegmentPlugin(forcedSegmentType string,
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forcedSegmentVersion uint32) (segment.Plugin, error) {
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if versions, ok := supportedSegmentPlugins[forcedSegmentType]; ok {
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if segPlugin, ok := versions[uint32(forcedSegmentVersion)]; ok {
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return segPlugin, nil
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}
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return nil, fmt.Errorf(
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"unsupported version %d for segment type: %s, supported: %v",
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forcedSegmentVersion, forcedSegmentType,
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SupportedSegmentTypeVersions(forcedSegmentType))
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}
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return nil, fmt.Errorf("unsupported segment type: %s, supported: %v",
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forcedSegmentType, SupportedSegmentTypes())
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}
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func (s *Scorch) loadSegmentPlugin(forcedSegmentType string,
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forcedSegmentVersion uint32) error {
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segPlugin, err := chooseSegmentPlugin(forcedSegmentType,
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forcedSegmentVersion)
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if err != nil {
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return err
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}
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s.segPlugin = segPlugin
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return nil
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}
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