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Added Protobuf Support
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| import { OutputFormat } from "./outputFormat"; | ||
| import protobuf from "protobufjs"; | ||
| import alert from "cli-alerts"; | ||
| import { globSync } from "glob"; | ||
|
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| export class ProtoFormat implements OutputFormat { | ||
| private schemas: any = {}; | ||
| private schemaFiles: Set<string>; | ||
|
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| static async getProtoSchemas(megaRecord: any, protoSchemaFiles: string[]) { | ||
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| if (!protoSchemaFiles || protoSchemaFiles.length === 0) { | ||
| protoSchemaFiles = []; | ||
| protoSchemaFiles.push(...(await ProtoFormat.getProtoSchemaFiles(megaRecord))); | ||
| } | ||
|
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| const protoSchemas = {}; | ||
| const protoRoot = protobuf.loadSync(protoSchemaFiles); | ||
| for (const topic in megaRecord) { | ||
|
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| const protoSchema = {}; | ||
| try { | ||
| protoSchema["messageType"] = protoRoot.lookupType(megaRecord[topic].schema); | ||
| protoSchema["name"] = topic | ||
| protoSchema["namespace"] = megaRecord[topic].schema | ||
|
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| if (global.debug) { | ||
| alert({ | ||
| type: `success`, | ||
| name: `Proto Schema for topic ${topic}:`, | ||
| msg: `\n ${JSON.stringify(protoSchema, null, 2)}` | ||
| }); | ||
| } | ||
|
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| protoSchemas[topic] = protoSchema; | ||
| } catch (error) { | ||
| alert({ | ||
| type: `error`, | ||
| name: `protobuf lookup type error for schema ${megaRecord[topic].schema}`, | ||
| msg: `${error}` | ||
| }); | ||
| process.exit(1); | ||
|
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| } | ||
| } | ||
|
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| return protoSchemas; | ||
| } | ||
|
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| static async getProtoSchemaFiles(megaRecord: any) { | ||
| const protoFiles = new Set<string>(); | ||
| for (const topic in megaRecord) { | ||
| (await ProtoFormat.getProtoSchemaFilesSync(megaRecord[topic].schemaDir)).forEach(file => protoFiles.add(file)); | ||
| } | ||
| return protoFiles; | ||
| } | ||
|
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| static async getProtoSchemaFilesSync(directory: string) { | ||
| if (!directory) { | ||
| return []; | ||
| } | ||
| return globSync(directory + (directory.endsWith("/") ? "" : "/") + "**/*.proto"); | ||
| } | ||
|
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| async register(megaRecord: any): Promise<void> { | ||
| this.schemaFiles = await ProtoFormat.getProtoSchemaFiles(megaRecord); | ||
| this.schemas = await ProtoFormat.getProtoSchemas(megaRecord, Array.from(this.schemaFiles)); | ||
| } | ||
|
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| async encode(record: any, topic: string): Promise<Buffer> { | ||
| const messageType = this.schemas[topic]['messageType']; | ||
|
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| // check if the message is valid | ||
| const error = messageType.verify(record); | ||
| if (global.debug && error) { | ||
| alert({ | ||
| type: `warning`, | ||
| name: `${record} with ${this.schemas[topic]['namespace']} is not valid`, | ||
| msg: `${error}` | ||
| }); | ||
| } | ||
| // if the message is not valid, convert plain object | ||
| const message = error ? messageType.fromObject(record) : messageType.create(record); | ||
|
|
||
| return messageType.encode(message).finish(); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| export function accessRecordKey(path: string, record: any): any { | ||
| return path?.split('.').reduce((level, key) => level && level[key], record); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| syntax = "proto3"; | ||
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| package datagen; | ||
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| // Definition for the User data | ||
| message User { | ||
| message Nested { | ||
| string phone = 1; | ||
| string website = 2; | ||
| } | ||
|
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| int32 id = 1; // Assuming IDs are integers | ||
| string name = 2; | ||
| string email = 3; | ||
| string phone = 4; | ||
| string website = 5; | ||
| string city = 6; | ||
| string company = 7; | ||
| Nested nested = 8; // Nested message for phone and website | ||
| } | ||
|
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| // Definition for the Post data | ||
| message Post { | ||
| int32 id = 1; | ||
| int32 user_id = 2; // Assuming this is a reference to a User ID | ||
| string title = 3; | ||
| string body = 4; | ||
| } | ||
|
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| // Definition for the Comment data | ||
| message Comment { | ||
| int32 id = 1; | ||
| int32 user_id = 2; // Assuming this is a reference to a User ID | ||
| int32 post_id = 3; // Assuming this is a reference to a Post ID | ||
| string body = 4; | ||
| int32 views = 5; // Assuming views is an integer | ||
| int32 status = 6; // Assuming status is an integer representing some enum | ||
| } |