feat(build): Added a version stamp in .metadata.json files.

Also modified StaticReflector to handle multiple versions in a
single .metadata.json file.

Fixes #8974
Closes #8981
This commit is contained in:
Chuck Jazdzewski 2016-06-02 16:40:38 -07:00
parent cf2d3cf920
commit 2d8f776e38
4 changed files with 39 additions and 10 deletions

View File

@ -22,6 +22,8 @@ import {
InjectMetadata,
} from "@angular/core";
import {ReflectorReader} from "./core_private";
const SUPPORTED_SCHEMA_VERSION = 1;
/**
* The host of the static resolver is expected to be able to provide module metadata in the form of
@ -379,8 +381,14 @@ export class StaticReflector implements ReflectorReader {
let moduleMetadata = this.metadataCache.get(module);
if (!moduleMetadata) {
moduleMetadata = this.host.getMetadataFor(module);
if (Array.isArray(moduleMetadata)) {
moduleMetadata = (<Array<any>>moduleMetadata).find(element => element.version === SUPPORTED_SCHEMA_VERSION) || moduleMetadata[0];
}
if (!moduleMetadata) {
moduleMetadata = {__symbolic: "module", module: module, metadata: {}};
moduleMetadata = {__symbolic: "module", version: SUPPORTED_SCHEMA_VERSION, module: module, metadata: {}};
}
if (moduleMetadata['version'] != SUPPORTED_SCHEMA_VERSION) {
throw new Error(`Metadata version mismatch for module ${module}, found version ${moduleMetadata['version']}, expected ${SUPPORTED_SCHEMA_VERSION}`);
}
this.metadataCache.set(module, moduleMetadata);
}

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@ -64,6 +64,11 @@ describe('StaticReflector', () => {
.toEqual([[host.findDeclaration('angular2/src/common/directives/ng_for', 'NgFor')]]);
});
it('should throw and exception for unsupported metadata versions', () => {
let e = host.findDeclaration('src/version-error', 'e');
expect(() => reflector.annotations(e)).toThrow(new Error('Metadata version mismatch for module /tmp/src/version-error.d.ts, found version 100, expected 1'));
});
it('should get and empty annotation list for an unknown class', () => {
let UnknownClass = host.findDeclaration('src/app/app.component', 'UnknownClass');
let annotations = reflector.annotations(UnknownClass);
@ -300,8 +305,9 @@ class MockReflectorHost implements StaticReflectorHost {
getMetadataFor(moduleId: string): any {
let data: {[key: string]: any} = {
'/tmp/angular2/src/common/forms/directives.d.ts': {
'/tmp/angular2/src/common/forms/directives.d.ts': [{
"__symbolic": "module",
"version": 1,
"metadata": {
"FORM_DIRECTIVES": [
{
@ -311,9 +317,10 @@ class MockReflectorHost implements StaticReflectorHost {
}
]
}
},
}],
'/tmp/angular2/src/common/directives/ng_for.d.ts': {
"__symbolic": "module",
"version": 1,
"metadata": {
"NgFor": {
"__symbolic": "class",
@ -366,15 +373,16 @@ class MockReflectorHost implements StaticReflectorHost {
}
},
'/tmp/angular2/src/core/linker/view_container_ref.d.ts':
{"metadata": {"ViewContainerRef": {"__symbolic": "class"}}},
{version: 1, "metadata": {"ViewContainerRef": {"__symbolic": "class"}}},
'/tmp/angular2/src/core/linker/template_ref.d.ts':
{"module": "./template_ref", "metadata": {"TemplateRef": {"__symbolic": "class"}}},
{version: 1, "module": "./template_ref", "metadata": {"TemplateRef": {"__symbolic": "class"}}},
'/tmp/angular2/src/core/change_detection/differs/iterable_differs.d.ts':
{"metadata": {"IterableDiffers": {"__symbolic": "class"}}},
{version: 1, "metadata": {"IterableDiffers": {"__symbolic": "class"}}},
'/tmp/angular2/src/core/change_detection/change_detector_ref.d.ts':
{"metadata": {"ChangeDetectorRef": {"__symbolic": "class"}}},
{version: 1, "metadata": {"ChangeDetectorRef": {"__symbolic": "class"}}},
'/tmp/src/app/hero-detail.component.d.ts': {
"__symbolic": "module",
"version": 1,
"metadata": {
"HeroDetailComponent": {
"__symbolic": "class",
@ -422,7 +430,8 @@ class MockReflectorHost implements StaticReflectorHost {
}
}
},
'/src/extern.d.ts': {"__symbolic": "module", metadata: {s: "s"}}
'/src/extern.d.ts': {"__symbolic": "module", "version": 1, metadata: {s: "s"}},
'/tmp/src/version-error.d.ts': {"__symbolic": "module", "version": 100, metadata: {e: "s"}},
};
return data[moduleId];
}

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@ -1,7 +1,7 @@
import * as ts from 'typescript';
import {Evaluator, ImportMetadata, ImportSpecifierMetadata, isPrimitive} from './evaluator';
import {ClassMetadata, ConstructorMetadata, ModuleMetadata, MemberMetadata, MetadataError, MetadataMap, MetadataSymbolicExpression, MetadataSymbolicReferenceExpression, MetadataValue, MethodMetadata, isMetadataError, isMetadataSymbolicReferenceExpression,} from './schema';
import {ClassMetadata, ConstructorMetadata, ModuleMetadata, MemberMetadata, MetadataError, MetadataMap, MetadataSymbolicExpression, MetadataSymbolicReferenceExpression, MetadataValue, MethodMetadata, isMetadataError, isMetadataSymbolicReferenceExpression, VERSION} from './schema';
import {Symbols} from './symbols';
/**
@ -207,6 +207,6 @@ export class MetadataCollector {
}
});
return metadata && {__symbolic: 'module', metadata};
return metadata && {__symbolic: 'module', version: VERSION, metadata};
}
}

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@ -1,5 +1,17 @@
// Metadata Schema
// If you make a backwards incompatible change to the schema, increment the VERSION number.
// If you make a backwards compatible change to the metadata (such as adding an option field) then
// leave VERSION the same. If possible, as many versions of the metadata that can represent the
// semantics of the file in an array. For example, when generating a version 2 file, if version 1
// can accurately represent the metadata, generate both version 1 and version 2 in an array.
export const VERSION = 1;
export interface ModuleMetadata {
__symbolic: 'module';
version: number;
metadata: {[name: string]: (ClassMetadata | MetadataValue)};
}
export function isModuleMetadata(value: any): value is ModuleMetadata {