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Detect legacy aspnet-prerendering mode earlier to fix #470

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This commit is contained in:
SteveSandersonMS
2016-11-29 17:23:14 +00:00
parent 3ff4447924
commit 28b8136fa6
2 changed files with 48 additions and 8 deletions
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27
src/Microsoft.AspNetCore.SpaServices/Content/Node/prerenderer.js
View File

@@ -71,7 +71,8 @@
// a certain flag is attached to the function instance.
function renderToStringImpl(callback, applicationBasePath, bootModule, absoluteRequestUrl, requestPathAndQuery, customDataParameter, overrideTimeoutMilliseconds) {
try {
var renderToStringFunc = findRenderToStringFunc(applicationBasePath, bootModule);
var forceLegacy = isLegacyAspNetPrerendering();
var renderToStringFunc = !forceLegacy && findRenderToStringFunc(applicationBasePath, bootModule);
var isNotLegacyMode = renderToStringFunc && renderToStringFunc['isServerRenderer'];
if (isNotLegacyMode) {
// Current (non-legacy) mode - we invoke the exported function directly (instead of going through aspnet-prerendering)
@@ -81,9 +82,9 @@
}
else {
// Legacy mode - just hand off execution to 'aspnet-prerendering' v1.x, which must exist in node_modules at runtime
renderToStringFunc = __webpack_require__(3).renderToString;
if (renderToStringFunc) {
renderToStringFunc(callback, applicationBasePath, bootModule, absoluteRequestUrl, requestPathAndQuery, customDataParameter, overrideTimeoutMilliseconds);
var aspNetPrerenderingV1RenderToString = __webpack_require__(3).renderToString;
if (aspNetPrerenderingV1RenderToString) {
aspNetPrerenderingV1RenderToString(callback, applicationBasePath, bootModule, absoluteRequestUrl, requestPathAndQuery, customDataParameter, overrideTimeoutMilliseconds);
}
else {
callback('If you use aspnet-prerendering >= 2.0.0, you must update your server-side boot module to call createServerRenderer. '
@@ -141,6 +142,24 @@
}
return renderToStringFunc;
}
function isLegacyAspNetPrerendering() {
var version = getAspNetPrerenderingPackageVersion();
return version && /^1\./.test(version);
}
function getAspNetPrerenderingPackageVersion() {
try {
var packageEntryPoint = require.resolve('aspnet-prerendering');
var packageDir = path.dirname(packageEntryPoint);
var packageJsonPath = path.join(packageDir, 'package.json');
var packageJson = require(packageJsonPath);
return packageJson.version.toString();
}
catch (ex) {
// Implies aspnet-prerendering isn't in node_modules at all (or node_modules itself doesn't exist,
// which will be the case in production based on latest templates).
return null;
}
}
/***/ },

29
src/Microsoft.AspNetCore.SpaServices/TypeScript/Prerenderer.ts
View File

@@ -1,6 +1,7 @@
/// <reference path="../npm/aspnet-prerendering/src/PrerenderingInterfaces.d.ts" />
import * as url from 'url';
import * as path from 'path';
import * as fs from 'fs';
declare var __non_webpack_require__;
// Separate declaration and export just to add type checking on function signature
@@ -22,7 +23,8 @@ export const renderToString: RenderToStringFunc = renderToStringImpl;
// a certain flag is attached to the function instance.
function renderToStringImpl(callback: RenderToStringCallback, applicationBasePath: string, bootModule: BootModuleInfo, absoluteRequestUrl: string, requestPathAndQuery: string, customDataParameter: any, overrideTimeoutMilliseconds: number) {
try {
let renderToStringFunc = findRenderToStringFunc(applicationBasePath, bootModule);
const forceLegacy = isLegacyAspNetPrerendering();
const renderToStringFunc = !forceLegacy && findRenderToStringFunc(applicationBasePath, bootModule);
const isNotLegacyMode = renderToStringFunc && renderToStringFunc['isServerRenderer'];
if (isNotLegacyMode) {
@@ -32,9 +34,9 @@ function renderToStringImpl(callback: RenderToStringCallback, applicationBasePat
renderToStringFunc.apply(null, arguments);
} else {
// Legacy mode - just hand off execution to 'aspnet-prerendering' v1.x, which must exist in node_modules at runtime
renderToStringFunc = require('aspnet-prerendering').renderToString;
if (renderToStringFunc) {
renderToStringFunc(callback, applicationBasePath, bootModule, absoluteRequestUrl, requestPathAndQuery, customDataParameter, overrideTimeoutMilliseconds);
const aspNetPrerenderingV1RenderToString = require('aspnet-prerendering').renderToString;
if (aspNetPrerenderingV1RenderToString) {
aspNetPrerenderingV1RenderToString(callback, applicationBasePath, bootModule, absoluteRequestUrl, requestPathAndQuery, customDataParameter, overrideTimeoutMilliseconds);
} else {
callback('If you use aspnet-prerendering >= 2.0.0, you must update your server-side boot module to call createServerRenderer. '
+ 'Either update your boot module code, or revert to aspnet-prerendering version 1.x');
@@ -92,3 +94,22 @@ function findRenderToStringFunc(applicationBasePath: string, bootModule: BootMod
return renderToStringFunc;
}
function isLegacyAspNetPrerendering() {
const version = getAspNetPrerenderingPackageVersion();
return version && /^1\./.test(version);
}
function getAspNetPrerenderingPackageVersion() {
try {
const packageEntryPoint = __non_webpack_require__.resolve('aspnet-prerendering');
const packageDir = path.dirname(packageEntryPoint);
const packageJsonPath = path.join(packageDir, 'package.json');
const packageJson = __non_webpack_require__(packageJsonPath);
return packageJson.version.toString();
} catch(ex) {
// Implies aspnet-prerendering isn't in node_modules at all (or node_modules itself doesn't exist,
// which will be the case in production based on latest templates).
return null;
}
}