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142 changes: 142 additions & 0 deletions
142
server/services/storage/agent_framework_storage_service.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,142 @@ | ||
| /* | ||
| * Copyright OpenSearch Contributors | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
|
|
||
| import { ApiResponse } from '@opensearch-project/opensearch/.'; | ||
| import { OpenSearchClient } from '../../../../../src/core/server'; | ||
| import { LLM_INDEX } from '../../../common/constants/llm'; | ||
| import { | ||
| IInput, | ||
| IMessage, | ||
| IOutput, | ||
| ISession, | ||
| ISessionFindResponse, | ||
| } from '../../../common/types/chat_saved_object_attributes'; | ||
| import { GetSessionsSchema } from '../../routes/chat_routes'; | ||
| import { StorageService } from './storage_service'; | ||
|
|
||
| export class AgentFrameworkStorageService implements StorageService { | ||
| constructor(private readonly client: OpenSearchClient) {} | ||
| async getSession(sessionId: string): Promise<ISession> { | ||
| const session = (await this.client.transport.request({ | ||
| method: 'GET', | ||
| path: `/_plugins/_ml/memory/conversation/${sessionId}`, | ||
| })) as ApiResponse<{ | ||
| interactions: Array<{ | ||
| input: string; | ||
| response: string; | ||
| parent_interaction_id: string; | ||
| interaction_id: string; | ||
| }>; | ||
| }>; | ||
| return { | ||
| title: 'test', | ||
| version: 1, | ||
| createdTimeMs: Date.now(), | ||
| updatedTimeMs: Date.now(), | ||
| messages: session.body.interactions | ||
| .filter((item) => !item.parent_interaction_id) | ||
| .reduce((total, current) => { | ||
| const inputItem: IInput = { | ||
| type: 'input', | ||
| contentType: 'text', | ||
| content: current.input, | ||
| }; | ||
| const outputItems: IOutput[] = [ | ||
| { | ||
| type: 'output', | ||
| contentType: 'markdown', | ||
| content: current.response, | ||
| traceId: current.interaction_id, | ||
| }, | ||
| ]; | ||
| return [...total, inputItem, ...outputItems]; | ||
| }, [] as IMessage[]), | ||
| }; | ||
| } | ||
|
|
||
| async getSessions(query: GetSessionsSchema): Promise<ISessionFindResponse> { | ||
| await this.createIndex(); | ||
| const sessions = await this.client.search<ISession>({ | ||
| index: LLM_INDEX.SESSIONS, | ||
| body: { | ||
| from: (query.page - 1) * query.perPage, | ||
| size: query.perPage, | ||
| ...(query.sortField && | ||
| query.sortOrder && { sort: [{ [query.sortField]: query.sortOrder }] }), | ||
| }, | ||
| }); | ||
|
|
||
| return { | ||
| objects: sessions.body.hits.hits | ||
| .filter( | ||
| (hit): hit is RequiredKey<typeof hit, '_source'> => | ||
| hit._source !== null && hit._source !== undefined | ||
| ) | ||
| .map((session) => ({ ...session._source, id: session._id })), | ||
| total: | ||
| typeof sessions.body.hits.total === 'number' | ||
| ? sessions.body.hits.total | ||
| : sessions.body.hits.total.value, | ||
| }; | ||
| } | ||
|
|
||
| async saveMessages( | ||
| title: string, | ||
| sessionId: string | undefined, | ||
| messages: IMessage[] | ||
| ): Promise<{ sessionId: string; messages: IMessage[] }> { | ||
| await this.createIndex(); | ||
| const timestamp = new Date().getTime(); | ||
| if (!sessionId) { | ||
| const createResponse = await this.client.index<ISession>({ | ||
| index: LLM_INDEX.SESSIONS, | ||
| body: { | ||
| title, | ||
| version: 1, | ||
| createdTimeMs: timestamp, | ||
| updatedTimeMs: timestamp, | ||
| messages, | ||
| }, | ||
| }); | ||
| return { sessionId: createResponse.body._id, messages }; | ||
| } | ||
| const updateResponse = await this.client.update<Partial<ISession>>({ | ||
| index: LLM_INDEX.SESSIONS, | ||
| id: sessionId, | ||
| body: { | ||
| doc: { | ||
| messages, | ||
| updatedTimeMs: timestamp, | ||
| }, | ||
| }, | ||
| }); | ||
| return { sessionId, messages }; | ||
| } | ||
|
|
||
| private async createIndex() { | ||
| const existsResponse = await this.client.indices.exists({ index: LLM_INDEX.SESSIONS }); | ||
| if (!existsResponse.body) { | ||
| return this.client.indices.create({ | ||
| index: LLM_INDEX.SESSIONS, | ||
| body: { | ||
| settings: { | ||
| index: { | ||
| number_of_shards: '1', | ||
| auto_expand_replicas: '0-2', | ||
| mapping: { ignore_malformed: true }, | ||
| }, | ||
| }, | ||
| mappings: { | ||
| properties: { | ||
| title: { type: 'keyword' }, | ||
| createdTimeMs: { type: 'date' }, | ||
| updatedTimeMs: { type: 'date' }, | ||
| }, | ||
| }, | ||
| }, | ||
| }); | ||
| } | ||
| } | ||
| } |