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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| import { Bucket, Repository } from "./Repository"; | ||
| import { createClient, RedisClientType, RediSearchSchema, SchemaFieldTypes } from "redis"; | ||
| import { getLoggerFor } from "@solid/community-server"; | ||
| import { Member } from "@treecg/types"; | ||
| import { DataFactory, Parser } from "n3"; | ||
| import namedNode = DataFactory.namedNode; | ||
|
|
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| export class RedisRepository implements Repository { | ||
| protected url: string; | ||
| protected metadata: string; | ||
| protected data: string; | ||
| protected index: string; | ||
|
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| protected client: RedisClientType | undefined; | ||
|
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| protected logger = getLoggerFor(this); | ||
|
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| constructor(url: string, metadata: string, data: string, index: string) { | ||
| this.url = url; | ||
| this.metadata = metadata; | ||
| this.data = data; | ||
| this.index = index; | ||
| } | ||
|
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| async open(): Promise<void> { | ||
| this.client = createClient({ url: this.url }); | ||
| await this.client.connect(); | ||
|
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| this.logger.debug(`Connected to ${this.url}`); | ||
|
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| await this.createSearchIndex(); | ||
| } | ||
|
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| async close(): Promise<void> { | ||
| await this.client?.disconnect(); | ||
|
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| this.logger.debug(`Closed connection to ${this.url}`); | ||
| } | ||
|
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| async findMetadata(type: string, id: string): Promise<string | null> { | ||
| return this.client?.get(`${this.metadata}:${encodeURIComponent(type)}:${encodeURIComponent(id)}`) ?? null; | ||
| } | ||
|
|
||
| async findRoots(streamId: string): Promise<string[]> { | ||
| const result = await this.client?.ft.search(`idx:${this.index}`, `(@streamId:{${this.encodeKey(streamId)}}) (@root:{true})`, { RETURN: ["id"] }); | ||
| return result?.documents.map((doc) => doc.value.id as string) ?? []; | ||
| } | ||
|
|
||
| async findBucket(type: string, id: string): Promise<Bucket | null> { | ||
| const query = `(@streamId:{${this.encodeKey(type)}) (@id:{${this.encodeKey(id)}})`; | ||
| const result = (await this.client?.ft.search(`idx:${this.index}`, query))?.documents ?? []; | ||
| const doc = result.pop(); | ||
| if (!doc) { | ||
| return null; | ||
| } | ||
|
|
||
| const members = await this.client?.sMembers(`${this.index}:${encodeURIComponent(type)}:${encodeURIComponent(doc.value.id as string)}:members`) ?? []; | ||
| const relations = ((await this.client?.sMembers(`${this.index}:${encodeURIComponent(type)}:${encodeURIComponent(doc.value.id as string)}:relations`)) ?? []).map((relation) => JSON.parse(relation)); | ||
|
|
||
| return { | ||
| id: doc.id, | ||
| streamId: type, | ||
| root: doc.value.root as unknown as boolean, | ||
| value: doc.value.value ? (doc.value.value as string) : undefined, | ||
| immutable: doc.value.immutable as unknown as boolean, | ||
| members: members, | ||
| relations: relations, | ||
| }; | ||
| } | ||
|
|
||
| async findMembers(members: string[]): Promise<Member[]> { | ||
| return (await this.client?.mGet(members.map((member) => `${this.data}:${encodeURIComponent(member)}`)) ?? []) | ||
| .filter((entry) => entry !== null) | ||
| .map((entry, i) => { | ||
| return { | ||
| id: namedNode(members[i]), | ||
| quads: new Parser().parse(entry), | ||
| }; | ||
| }); | ||
| } | ||
|
|
||
| async createSearchIndex(): Promise<void> { | ||
| try { | ||
| const schema: RediSearchSchema = { | ||
| "$.streamId": { | ||
| type: SchemaFieldTypes.TAG, | ||
| AS: "streamId", | ||
| }, | ||
| "$.id": { | ||
| type: SchemaFieldTypes.TAG, | ||
| AS: "id", | ||
| }, | ||
| "$.root": { | ||
| type: SchemaFieldTypes.TAG, | ||
| AS: "root", | ||
| }, | ||
| "$.value": { | ||
| type: SchemaFieldTypes.TEXT, | ||
| AS: "value", | ||
| }, | ||
| "$.immutable": { | ||
| type: SchemaFieldTypes.TAG, | ||
| AS: "immutable", | ||
| }, | ||
| }; | ||
| await this.client?.ft.create(`idx:${this.index}`, schema, { | ||
| ON: "JSON", | ||
| PREFIX: this.index, | ||
| }); | ||
| this.logger.info(`Created index idx:${this.index}`); | ||
| } catch (e) { | ||
| // Index already exists | ||
| this.logger.debug(`Index idx:${this.index} already exists`); | ||
| } | ||
| } | ||
|
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||
| encodeKey(key: string): string { | ||
| // Add \\ in front of ., :, /, - | ||
| return key.replace(/([.:\/-])/g, "\\$1"); | ||
| } | ||
| } |
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