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https://github.com/googleapis/genai-toolbox.git
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ae0c29254a
To keep a persistent backend storage for configuration, we will have to keep a single source of truth. This involves supporting bi-directional conversion between Config and Source. This PR make the following changes: * Embed Config in Source * Add `ToConfig()` to extract Config from Source.
78 lines
2.5 KiB
Go
78 lines
2.5 KiB
Go
// Copyright 2024 Google LLC
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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 sources
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import (
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"context"
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"fmt"
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"github.com/goccy/go-yaml"
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"go.opentelemetry.io/otel/attribute"
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"go.opentelemetry.io/otel/trace"
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)
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// SourceConfigFactory defines the function signature for creating a SourceConfig.
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type SourceConfigFactory func(ctx context.Context, name string, decoder *yaml.Decoder) (SourceConfig, error)
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var sourceRegistry = make(map[string]SourceConfigFactory)
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// Register registers a new source kind with its factory.
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// It returns false if the kind is already registered.
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func Register(kind string, factory SourceConfigFactory) bool {
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if _, exists := sourceRegistry[kind]; exists {
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// Source with this kind already exists, do not overwrite.
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return false
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}
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sourceRegistry[kind] = factory
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return true
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}
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// DecodeConfig decodes a source configuration using the registered factory for the given kind.
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func DecodeConfig(ctx context.Context, kind string, name string, decoder *yaml.Decoder) (SourceConfig, error) {
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factory, found := sourceRegistry[kind]
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if !found {
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return nil, fmt.Errorf("unknown source kind: %q", kind)
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}
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sourceConfig, err := factory(ctx, name, decoder)
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if err != nil {
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return nil, fmt.Errorf("unable to parse source %q as %q: %w", name, kind, err)
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}
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return sourceConfig, err
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}
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// SourceConfig is the interface for configuring a source.
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type SourceConfig interface {
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SourceConfigKind() string
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Initialize(ctx context.Context, tracer trace.Tracer) (Source, error)
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}
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// Source is the interface for the source itself.
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type Source interface {
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SourceKind() string
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ToConfig() SourceConfig
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}
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// InitConnectionSpan adds a span for database pool connection initialization
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func InitConnectionSpan(ctx context.Context, tracer trace.Tracer, sourceKind, sourceName string) (context.Context, trace.Span) {
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ctx, span := tracer.Start(
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ctx,
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"toolbox/server/source/connect",
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trace.WithAttributes(attribute.String("source_kind", sourceKind)),
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trace.WithAttributes(attribute.String("source_name", sourceName)),
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)
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return ctx, span
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}
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