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Support for local Avro schema in CONSUMER/PRODUCER of kafka-file
Fixes jlandersen#114 Signed-off-by: azerr <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,163 @@ | ||
|
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| { | ||
| "$schema": "http://json-schema.org/draft-06/schema#", | ||
| "title": "Avro Schema Definition", | ||
| "description": "Json-Schema definition for Avro AVSC files.", | ||
| "definitions": { | ||
| "avroSchema": { | ||
| "title": "Avro Schema", | ||
| "description": "Root Schema", | ||
| "oneOf": [ | ||
| { "$ref": "#/definitions/types" } | ||
| ] | ||
| }, | ||
| "types": { | ||
| "title": "Avro Types", | ||
| "description": "Allowed Avro types", | ||
| "oneOf": [ | ||
| { "$ref": "#/definitions/primitiveType" }, | ||
| { "$ref": "#/definitions/primitiveTypeWithMetadata" }, | ||
| { "$ref": "#/definitions/customTypeReference" }, | ||
| { "$ref": "#/definitions/avroRecord" }, | ||
| { "$ref": "#/definitions/avroEnum" }, | ||
| { "$ref": "#/definitions/avroArray" }, | ||
| { "$ref": "#/definitions/avroMap" }, | ||
| { "$ref": "#/definitions/avroFixed" }, | ||
| { "$ref": "#/definitions/avroUnion" } | ||
| ] | ||
| }, | ||
| "primitiveType": { | ||
| "title": "Primitive Type", | ||
| "description": "Basic type primitives.", | ||
| "type":"string", | ||
| "enum": [ | ||
| "null", | ||
| "boolean", | ||
| "int", | ||
| "long", | ||
| "float", | ||
| "double", | ||
| "bytes", | ||
| "string" | ||
| ] | ||
| }, | ||
| "primitiveTypeWithMetadata": { | ||
| "title": "Primitive Type With Metadata", | ||
| "description": "A primitive type with metadata attached.", | ||
| "type": "object", | ||
| "properties": { | ||
| "type": { "$ref": "#/definitions/primitiveType" } | ||
| }, | ||
| "required": ["type"] | ||
| }, | ||
| "customTypeReference": { | ||
| "title": "Custom Type", | ||
| "description": "Reference to a ComplexType", | ||
| "not": { "$ref": "#/definitions/primitiveType" }, | ||
| "type": "string", | ||
| "pattern": "^[A-Za-z_][A-Za-z0-9_]*(\\.[A-Za-z_][A-Za-z0-9_]*)*$" | ||
| }, | ||
| "avroUnion": { | ||
| "title": "Union", | ||
| "description": "A Union of types", | ||
| "type": "array", | ||
| "items": { "$ref": "#/definitions/avroSchema" }, | ||
| "minItems": 1 | ||
| }, | ||
| "avroField": { | ||
| "title": "Field", | ||
| "description": "A field within a Record", | ||
| "type": "object", | ||
| "properties": { | ||
| "name": { "$ref": "#/definitions/name" }, | ||
| "type": { "$ref": "#/definitions/types" }, | ||
| "doc": { "type": "string" }, | ||
| "default": { }, | ||
| "order": { "enum": ["ascending", "descending", "ignore"] }, | ||
| "aliases": { "type": "array", "items": { "$ref": "#/definitions/name" } } | ||
| }, | ||
| "required": ["name", "type"] | ||
| }, | ||
| "avroRecord": { | ||
| "title": "Record", | ||
| "description": "A Record", | ||
| "type": "object", | ||
| "properties": { | ||
| "type": {"type":"string", "enum": ["record"]}, | ||
| "name": { "$ref": "#/definitions/name" }, | ||
| "namespace": { "$ref": "#/definitions/namespace" }, | ||
| "doc": { "type": "string" }, | ||
| "aliases": { "type": "array", "items": { "$ref": "#/definitions/name" } }, | ||
| "fields": { "type": "array", "items": { "$ref": "#/definitions/avroField" } } | ||
| }, | ||
| "required": ["type", "name", "fields"] | ||
| }, | ||
| "avroEnum": { | ||
| "title": "Enum", | ||
| "description": "An enumeration", | ||
| "type": "object", | ||
| "properties": { | ||
| "type": {"type":"string", "enum": ["enum"]}, | ||
| "name": { "$ref": "#/definitions/name" }, | ||
| "namespace": { "$ref": "#/definitions/namespace" }, | ||
| "doc": { "type": "string" }, | ||
| "aliases": { "type": "array", "items": { "$ref": "#/definitions/name" } }, | ||
| "symbols": { "type": "array", "items": { "$ref": "#/definitions/name" } } | ||
| }, | ||
| "required": ["type", "name", "symbols"] | ||
| }, | ||
| "avroArray": { | ||
| "title": "Array", | ||
| "description": "An array", | ||
| "type": "object", | ||
| "properties": { | ||
| "type": {"type":"string", "enum": ["array"]}, | ||
| "name": { "$ref": "#/definitions/name" }, | ||
| "namespace": { "$ref": "#/definitions/namespace" }, | ||
| "doc": { "type": "string" }, | ||
| "aliases": { "type": "array", "items": { "$ref": "#/definitions/name" } }, | ||
| "items": { "$ref": "#/definitions/types" } | ||
| }, | ||
| "required": ["type", "items"] | ||
| }, | ||
| "avroMap": { | ||
| "title": "Map", | ||
| "description": "A map of values", | ||
| "type": "object", | ||
| "properties": { | ||
| "type": {"type":"string", "enum": ["map"]}, | ||
| "name": { "$ref": "#/definitions/name" }, | ||
| "namespace": { "$ref": "#/definitions/namespace" }, | ||
| "doc": { "type": "string" }, | ||
| "aliases": { "type": "array", "items": { "$ref": "#/definitions/name" } }, | ||
| "values": { "$ref": "#/definitions/types" } | ||
| }, | ||
| "required": ["type", "values"] | ||
| }, | ||
| "avroFixed": { | ||
| "title": "Fixed", | ||
| "description": "A fixed sized array of bytes", | ||
| "type": "object", | ||
| "properties": { | ||
| "type": {"type":"string", "enum": ["fixed"]}, | ||
| "name": { "$ref": "#/definitions/name" }, | ||
| "namespace": { "$ref": "#/definitions/namespace" }, | ||
| "doc": { "type": "string" }, | ||
| "aliases": { "type": "array", "items": { "$ref": "#/definitions/name" } }, | ||
| "size": {"type":"number"} | ||
| }, | ||
| "required": ["type", "name", "size"] | ||
| }, | ||
| "name": { | ||
| "type": "string", | ||
| "pattern": "^[A-Za-z_][A-Za-z0-9_]*$" | ||
| }, | ||
| "namespace": { | ||
| "type": "string", | ||
| "pattern": "^([A-Za-z_][A-Za-z0-9_]*(\\.[A-Za-z_][A-Za-z0-9_]*)*)*$" | ||
| } | ||
| }, | ||
| "oneOf": [ | ||
| { "$ref": "#/definitions/avroSchema" } | ||
| ] | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,7 @@ | ||
| import * as vscode from "vscode"; | ||
| import { registerAvroSerialization } from "./serialization"; | ||
|
|
||
| export function registerAvroFileSupport(context: vscode.ExtensionContext) { | ||
| // register avro serializer/deserializer from a local *.avro file | ||
| registerAvroSerialization(); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| import * as avro from "avsc"; | ||
| import { Deserializer, registerDeserializer, registerSerializer, SerializationException, SerializationSetting, Serializer } from "../client/serialization"; | ||
|
|
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| export function registerAvroSerialization() { | ||
| registerSerializer("avro", new AvroSerializer()); | ||
| registerDeserializer("avro", new AvroDeserializer()); | ||
| } | ||
| class AvroSerializer implements Serializer { | ||
|
|
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| serialize(value: string, settings: SerializationSetting[]): Buffer | string | null { | ||
| if (!settings) { | ||
| throw new SerializationException("The avro file path is required"); | ||
| } | ||
| const type = avro.Type.forSchema({ | ||
| type: 'record', | ||
| fields: [ | ||
| { name: 'kind', type: { type: 'enum', symbols: ['CAT', 'DOG'] } }, | ||
| { name: 'name', type: 'string' } | ||
| ] | ||
| } as avro.Schema); | ||
| const data = JSON.parse(value); | ||
| return type.toBuffer(data); | ||
| } | ||
| } | ||
|
|
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| class AvroDeserializer implements Deserializer { | ||
|
|
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| deserialize(data: Buffer | null, settings?: SerializationSetting[]): any { | ||
| if (data === null) { | ||
| return null; | ||
| } | ||
| if (!settings) { | ||
| throw new SerializationException("The avro file path is required"); | ||
| } | ||
| const type = avro.Type.forSchema({ | ||
| type: 'record', | ||
| fields: [ | ||
| { name: 'kind', type: { type: 'enum', symbols: ['CAT', 'DOG'] } }, | ||
| { name: 'name', type: 'string' } | ||
| ] | ||
| } as avro.Schema); | ||
| return type.fromBuffer(data); | ||
| } | ||
| } |
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