mirror of https://github.com/pulumi/pulumi.git
54 lines
1.6 KiB
Go
54 lines
1.6 KiB
Go
// Copyright 2025, Pulumi Corporation.
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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 convert
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import "context"
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// cachingMapper wraps another Mapper, caching the results of GetMapping calls by source provider name.
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type cachingMapper struct {
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// The underlying Mapper to which calls will be delegated when there is no cache hit.
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mapper Mapper
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// A cache of provider mappings, keyed by source provider name.
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entries map[string][]byte
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}
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// NewCachingMapper creates a new caching mapper backed by the given Mapper.
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func NewCachingMapper(mapper Mapper) Mapper {
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return &cachingMapper{
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mapper: mapper,
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entries: map[string][]byte{},
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}
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}
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// Implements Mapper.GetMapping. Returned results are cached by source provider key.
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func (m *cachingMapper) GetMapping(
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ctx context.Context,
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provider string,
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hint *MapperPackageHint,
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) ([]byte, error) {
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if mapping, ok := m.entries[provider]; ok {
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return mapping, nil
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}
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mapping, err := m.mapper.GetMapping(ctx, provider, hint)
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if err != nil {
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return nil, err
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}
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m.entries[provider] = mapping
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return mapping, nil
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}
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