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71 lines
2.2 KiB
Go
71 lines
2.2 KiB
Go
package doris
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import (
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"database/sql"
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"net/http"
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"sync"
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)
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// dorisRepository 是 Apache Doris 4.1 的检索引擎仓储实现。
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//
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// 通信通道:
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// - 读写主链路:MySQL 协议(database/sql + go-sql-driver/mysql),FE 默认 9030 端口。
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// - Stream Load:HTTP(FE 默认 8030 端口),legacy 模式用于 partial update。
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//
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// 表结构按维度分表:<tableBaseName>_<dim>。
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// 兼容模式由 DORIS_COMPAT_MODE 决定:
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// - legacy:UNIQUE KEY(id) + cosine_distance ANN + Stream Load partial update
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// - inner_product_duplicate:DUPLICATE KEY(id) + normalized inner product + delete/insert rewrite
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//
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// 该设置在 embedding 表创建后不可直接互换;切换模式前需要重建这些表。
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//
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// 与 Qdrant/Milvus/Weaviate 一样,initializedTables 缓存"已确保存在"的维度,
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// 避免每次写入都打 SHOW TABLES。
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type dorisRepository struct {
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db *sql.DB
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httpClient *http.Client
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// fe HTTP base,例如 "http://doris-fe:8030"。Stream Load 路径
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// 由 streamLoadURL(table) 拼接:<feHTTPBase>/api/<database>/<table>/_stream_load。
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feHTTPBase string
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username string
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password string
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database string
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tableBaseName string
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bucketsNum int // 0 -> default 10
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replicationNum int // 0 -> default 1
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compatModeRequested dorisCompatMode
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compatModeResolved dorisCompatMode
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compatResolveOnce sync.Once
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compatResolveErr error
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// 已经确保过 ensureTable 的维度集合:dim -> true。
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initializedTables sync.Map
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}
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// DorisVectorEmbedding 是落到 Doris 表里的一行的领域模型。
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//
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// 字段顺序与 schema.go 中的 INSERT 列序保持一致,
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// 调整时需要同时更新 createInsert 与 columns。
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type DorisVectorEmbedding struct {
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ID string
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Content string
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SourceID string
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SourceType int
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ChunkID string
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KnowledgeID string
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KnowledgeBaseID string
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TagID string
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IsEnabled bool
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Embedding []float32
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}
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// DorisVectorEmbeddingWithScore 是检索结果的领域模型,
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// Score 在向量检索时按当前 compat mode 计算,在关键词检索时统一赋 1.0。
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type DorisVectorEmbeddingWithScore struct {
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DorisVectorEmbedding
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Score float64
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}
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