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feat: precompile cloudevent schema #471

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merged 4 commits into from
Feb 15, 2022
Merged

feat: precompile cloudevent schema #471

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2e8cc9a
feat: precompile cloudevent schema
lance Feb 10, 2022
9e9c0f0
fixup: ajv-formats in dev deps
lance Feb 10, 2022
e5b90e7
fixup: revert v0.3 changes
lance Feb 14, 2022
e196efc
fixup: make src/schema/v1.js transient
lance Feb 14, 2022
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1 change: 1 addition & 0 deletions .eslintrc
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@
"plugins": [
"header"
],
"ignorePatterns": ["**/schema/*"],
"rules": {
"no-var": "error",
"standard/no-callback-literal": "off",
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137 changes: 117 additions & 20 deletions package-lock.json
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10 changes: 7 additions & 3 deletions package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,10 @@
"main": "dist/index.js",
"scripts": {
"watch": "tsc --project tsconfig.json --watch",
"build": "tsc --project tsconfig.json && tsc --project tsconfig.browser.json && webpack",
"build:src": "tsc --project tsconfig.json",
"build:browser": "tsc --project tsconfig.browser.json && webpack",
"build:schema": "ajv compile -c ./src/schema/formats.js -s src/schema/cloudevent.json --strict-types false -o src/schema/v1.js",
"build": "npm run build:schema && npm run build:src && npm run build:browser",
"lint": "npm run lint:md && npm run lint:js",
"lint:js": "eslint 'src/**/*.{js,ts}' 'test/**/*.{js,ts}' cucumber.js",
"lint:md": "remark .",
Expand Down Expand Up @@ -106,13 +109,12 @@
},
"homepage": "https://github.com/cloudevents/sdk-javascript#readme",
"dependencies": {
"ajv": "~6.12.3",
"ajv": "^8.6.3",
"util": "^0.12.4",
"uuid": "~8.3.0"
},
"devDependencies": {
"@cucumber/cucumber": "^8.0.0-rc.1",
"@types/ajv": "^1.0.0",
"@types/chai": "^4.2.11",
"@types/cucumber": "^6.0.1",
"@types/got": "^9.6.11",
Expand All @@ -122,6 +124,8 @@
"@types/uuid": "^8.0.0",
"@typescript-eslint/eslint-plugin": "^4.29.0",
"@typescript-eslint/parser": "^4.29.0",
"ajv-cli": "^5.0.0",
"ajv-formats": "^2.1.1",
"axios": "^0.21.3",
"chai": "~4.2.0",
"eslint": "^7.32.0",
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86 changes: 0 additions & 86 deletions src/event/schemas.ts
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17 changes: 3 additions & 14 deletions src/event/spec.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -3,28 +3,17 @@
SPDX-License-Identifier: Apache-2.0
*/

import Ajv, { Options } from "ajv";
import { ValidationError } from "./validation";

import { CloudEventV1 } from "./interfaces";
import { schemaV1 } from "./schemas";
import { Version } from "./cloudevent";
import validate from "../schema/v1";

const ajv = new Ajv({ extendRefs: true } as Options);

// handle date-time format specially because a user could pass
// Date().toString(), which is not spec compliant date-time format
ajv.addFormat("js-date-time", function (dateTimeString) {
const date = new Date(Date.parse(dateTimeString));
return date.toString() !== "Invalid Date";
});

const isValidAgainstSchemaV1 = ajv.compile(schemaV1);

export function validateCloudEvent<T>(event: CloudEventV1<T>): boolean {
if (event.specversion === Version.V1) {
if (!isValidAgainstSchemaV1(event)) {
throw new ValidationError("invalid payload", isValidAgainstSchemaV1.errors);
if (!validate(event)) {
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throw new ValidationError("invalid payload", (validate as any).errors);
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(validate as any) seems a bit off. Why do we need to cast to any?

I'm seeing validate as a function:

function validate(data: any, { instancePath, parentData, parentDataProperty, rootData }?: {
    instancePath?: string | undefined;
    parentData: any;
    parentDataProperty: any;
    rootData?: any;
}): boolean

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The function that AJV generates has an errors object attached to it if there are errors found when validating with validate(data). It's a non-optimal API. Here you can see it in the generated validation code. I welcome suggestions on how to deal with this another way.

function validate20(data, { instancePath = "", parentData, parentDataProperty, rootData = data } = {}) {
  let vErrors = null;
  let errors = 0;
  if (errors === 0) {
    if (data && typeof data == "object" && !Array.isArray(data)) {
      let missing0;
      if (
        (data.id === undefined && (missing0 = "id")) ||
        (data.source === undefined && (missing0 = "source")) ||
        (data.specversion === undefined && (missing0 = "specversion")) ||
        (data.type === undefined && (missing0 = "type"))
      ) {
        validate20.errors = [
          {
            instancePath,
            schemaPath: "#/required",
            keyword: "required",
            params: { missingProperty: missing0 },
            message: `must have required property '${  missing0  }'`,
          },
        ];
        return false;
      }

}
} else {
return false;
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