I've written a small, 3 endpoint dart REST API using shelf. I know it partially works, as I've written a health endpoint (here it is, returning OK), and it returns 200s as expected.
However, I have 2 other endpoints that use the 'package:http/http.dart' package, and those fail with the error Failed host lookup: '<URL>'. This is the first endpoint that fails, and here's the second.
This is the request that fails on the second example above:
final response = await http.get(
Uri.parse('$_url?q=${Uri.encodeComponent(params['passage'])}'),
headers: getHeaders());
Locally, it works great, but once compiled, it fails.
My compilation process looks like this (it's a dockerfile):
FROM dart:latest
WORKDIR /app
# Install dependencies
COPY pubspec.lock .
COPY pubspec.yaml .
RUN dart pub get
# Build the application
COPY / .
RUN dart compile exe /app/bin/homiletics_api.dart -o /app/bin/server --define=ESV_KEY=${ESV_KEY} --define=BIBLE_API_KEY=${BIBLE_API_KEY}
# Run the application
FROM subfuzion/dart-scratch:latest
COPY --from=0 /app/bin/server /app/bin/server
EXPOSE 8080
ENTRYPOINT ["/app/bin/server"]
I appreciate any help y'all can offer. Thanks so much.
Related
I am trying to provide an HttpClient from the outside to my ktor server so that I can mock external services and write tests, however I get this exception when I run my test:
Please make sure that you use unique name for the plugin and don't install it twice. Conflicting application plugin is already installed with the same key as `Compression`
io.ktor.server.application.DuplicatePluginException: Please make sure that you use unique name for the plugin and don't install it twice. Conflicting application plugin is already installed with the same key as `Compression`
at app//io.ktor.server.application.ApplicationPluginKt.install(ApplicationPlugin.kt:112)
at app//com.example.plugins.HTTPKt.configureHTTP(HTTP.kt:13)
at app//com.example.ApplicationKt.module(Application.kt:14)
at app//com.example.ApplicationTest$expected to work$1$1.invoke(ApplicationTest.kt:39)
at app//com.example.ApplicationTest$expected to work$1$1.invoke(ApplicationTest.kt:38)
and thats a bit unexpected to me because I am not applying the Compression plugin twice as far as I can tell. If I run the server normally and manually call my endpoint with curl then it works as expected. What am I doing wrong?
I added a runnable sample project here with a failing test.
sample project
official ktor-documentation-sample project.
The problem is that you have the application.conf file and by default, the testApplication function tries to load modules which are enumerated there. Since you also explicitly load them in the application {} block the DuplicatePluginException occurs. To solve your problem you can explicitly load an empty configuration instead of the default one:
// ...
application {
module(client)
}
environment {
config = MapApplicationConfig()
}
// ...
I'm trying to get Spartacus to work with SSR. When opening the default URL, http://localhost:4200, the storefront renders, as expected, but only after I clear the site data first. When I attempt to browse the storefront, API calls fail with a 504 (Gateway timeout). Chrome dev tools indicates the error is happening in the service worker. At this point, I'm wondering if I configured Spartacus incorrectly. When running Spartacus using yarn start rather than yarn serve:ssr, I can load the home page and browse the site normally.
OS: Ubuntu 16.04.6 LTS
Chrome Version: 73.0.3683.75
Node version: 11.15.0
Angular CLI version: 8.3.8
Yarn version: 1.19.1
ng new ssr-spartacus-app --style=scss
cd ssr-spartacus-app
ng add #spartacus/schematics --baseUrl https://localhost:9002 --baseSite cmssiteuid --pwa --ssr
rm src/app/app.component.html
echo "<cx-storefront>Loading...</cx-storefront>" > src/app/app.component.html
yarn build:ssr
yarn serve:ssr
Before running yarn build:ssr, I made following change to the app.module.ts file:
Before
context: {
baseSite: ['cmssiteuid'],
},
After
authentication: {
client_id: 'mobile_android',
client_secret: 'secret',
},
context: {
urlParameters: ['baseSite', 'language', 'currency'],
baseSite: ['cmssiteuid'],
},
I also set anonymousConsents to false. With this set to true, I was getting a lot of CORs errors.
If been scratching my head with this for a little while now and I'm hoping someone with more knowledge of Spartacus' inner workings can shed some light on why Spartacus is behaving this way with SSR.
I'm not sure that I can give you some certain recipe to fix the issue, obviously I need more details and logs relates to your problem, but still, based on my experience I can share with you some tips and tricks about how we should play with such issues (which relates to SSR).
Some set of theory which relates to SSR
https://angular.io/guide/universal (you can feel free to use Angular official documentation as a primary source, cuz Spartacus uses Angular OOTB features to make it works)
https://sap.github.io/spartacus-docs/server-side-rendering-in-spartacus/
https://enable.cx.sap.com/tag/tagid/spartacus (SSR related videos)
Practical approaches for debugging SSR
You should observe and analyze console output during starting your application in Node.js
You can use SSR configuration from example Storefront application (https://github.com/SAP/spartacus/tree/develop/projects/storefrontapp) like a starting point, cuz OOTB SSR works like a charm
Something from Spartacus team https://sap.github.io/spartacus-docs/how-to-debug-server-side-rendered-storefront/
Common set of theory to ensure that application has been configured correctly
SAP Commerce Cloud configuration for working with Spartacus https://sap.github.io/spartacus-docs/installing-sap-commerce-cloud/
Take a look on the guide https://sap.github.io/spartacus-docs/building-the-spartacus-storefront-from-libraries/ to ensure, that your frontend application has correct configuration
Double check your configuration which B2cStorefrontModule is using (here you can find an example project here https://github.com/SAP/spartacus/tree/develop/projects/storefrontapp)
Take a look on Network and Console browser tabs and try to resolve all errors
did you turn off PWA?
Turn PWA off.
As soon as Spartacus is installed in PWA mode, a service worker is installed, and it serves a cached version of index.html, along with the js files. This results in SSR being completely skipped. The following steps describe how to turn off PWA:
Check that there are no service workers registered in your app. If you do find any service workers, remove them.
Turn PWA off in your app module configuration, as follows:
StorefrontModule.withConfig({
backend: {
occ: {
baseUrl: 'https://[your_enpdoint],
},
},
pwa: {
enabled: false,
},
};
Rebuild your local Spartacus libraries by running the following command:
yarn build:core:lib
Build your local Spartacus shell app by running the following command:
yarn build --prod
Build the SSR version of your shell app by running the following command:
yarn build:ssr
Start Spartacus with the SSR server by running the following command:
yarn serve:ssr
If you are getting 504 after hitting the API service you need to check your API logs.
IF you have err log:
{"instant":{"epochSecond":1644915623,"nanoOfSecond":929833000},"thread":"hybrisHTTP1","level":"ERROR","loggerName":"org.springframework.web.servlet.DispatcherServlet","message":"Context initialization failed","thrown":{"commonElementCount":0,"localizedMessage":"Error creating bean with name 'cartEntriesController': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'defaultStockValidator' defined in ServletContext resource [/WEB-INF/config/v2/validators-v2-spring.xml]: Unsatisfied dependency expressed through constructor parameter 0: Could not convert argument value of type [de.hybris.platform.ycommercewebservices.stock.impl.DefaultCommerceStockFacade] to required type [de.hybris.platform.commercewebservices.core.stock.CommerceStockFacade]: Failed to convert value of type 'de.hybris.platform.ycommercewebservices.stock.impl.DefaultCommerceStockFacade' to required type 'de.hybris.platform.commercewebservices.core.stock.CommerceStockFacade'; nested exception is java.lang.IllegalStateException: Cannot convert value of type 'de.hybris.platform.ycommercewebservices.stock.impl.DefaultCommerceStockFacade' to required type 'de.hybris.platform.commercewebservices.core.stock.CommerceStockFacade': no matching editors or conversion strategy found","message":"Error creating bean with name 'cartEntriesController': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'defaultStockValidator'
You can try resolution:
Remove template extension ycommercewebservices extension from manifest.json, rebuild and redeploy with "Migrate Data" mode.
I would like to know how to use the create-react-app "npm start" script when development takes place on a remote host.
Nginx is running as a reverse proxy. The external uri looks like:
https://my-dev-box/my-cra
which is set to proxy to:
http://localhost:3000
The CRA app is static (ie no API calls).
The errors appearing in the browser's web dev console are 404s related to /static/js/bundle.js and favicon. The app's index.html page is served with a 200 response.
When I build the app, "npm build" produces an index.html file with the correct paths (courtesy of the "homepage" setting in package.json). I have looked at the documentation/tickets surrounding "Invalid Host Header" and "DANGEROUSLY_DISABLE_HOST_CHECK" but have not found a combo which works for me.
It appears to me that the fundamental issue is that "npm start" does not seem aware (as "npm build" is aware) that the WebDevServer is behind a proxy and is thus not constructing correct paths for resources.
So to restate the question, does anyone know how to get "npm start" working nicely behind a reverse proxy on remote development box. (create-react-app version used: 1.5.2)
(Note: application works perfectly behind proxy when using "npm build".)
Update: Courtesy of this question I found this comment in "webpack.config.dev.js":
// Webpack uses `publicPath` to determine where the app is being served from.
// In development, we always serve from the root. This makes config easier.
const publicPath = '/';
which I guess means that what I want to do is not going to be that practical unless I eject the project. (Which I'm a little reluctant to do - the reason for using create-react-app is newness to React.)
This is my first question here. I have already spent hours reading topics, but never posted a question before.
At this moment I am developping an Angular4 application. I am running my app with "ng build --watch" and a local PHP webserver pointed to the 'dist' folder of my angular app. (When using build-in liveload server 'ng serve' there isn't a PHP server available, so i fixed this with 'ng build --watch' and a local PHP build-in server of PHPStorm)
To communicate with my MYSQL database, I used before single-php files in a directory called '/api'. I added this folder to my assets in the angular-cli.json file, so the API folder is also being pushed to the 'dist' folder when running the app local.
In this case, I was able to use relative paths to point my http requests. (like a POST action to '/api/insert.php'). So when publishing my app, it was not necessary to modify the paths of my HTTP requests.
But now I would like to use a backend framework, after some research I found http://api-platform.com, a PHP framework builded on Symfony3. When i am running this API, this runs for example on localhost:8000 while my angular applciation runs on localhost:4200.
So, that means i would have to use absolute paths for my HTTP requests. (eq http://localhost:8000/api/insert.php instead of /api/insert.php).
At this moment I have 2 projects: one front-end and one back-end. To make developping faster, easier, and simpler I would like to put both projects together. I know some developpers don't like this way of architecture, but in my case it is the best solution, one project, with a front and back-end included.
Concrete: Is it possible to run a debug-webserver in development zone with my angular app running on eq localhost and my symfony3/api-platform on eq localhost/api on the same time, same domain, and same port?
I would like to keep this project folder structure to keep it clean:
- projectname (root)
--- frontend
----- (all directories/files from angular)
--- backend
----- (all directories from api-platform / symfony3)
Sincerely,
Lander
running both application on the same domain (f.ex. localhost) is no problem, but they need to run on different ports. In your case angular is running on 4200 and your PHP application on 8000. You can configure angular with a proxy, which passes requests to http://localhost:4200/api to http://localhost:8000/api
In your angular root directory (where your package.json is), create a file proxy.conf.json
{
"/api": {
"target": "http://localhost:8000",
"secure": false
}
}
then change your package.json to use this proxy:
"scripts": {
"ng": "ng",
"start": "ng serve --proxy-config proxy.conf.json",
// other scripts
}
now run the webpack server with npm start instead of ng serve
Personally, I git ignore the proxy.conf.json, because some colleagues run their backend on a different port. Therefore we created a proxy.conf.dist.json with the above contents in git. If you want to use a different port, you can just copy it and change the port, while those, who want to use the default, can simply symlink to it.
UPDATE:
We recently switched to another method, namely using environment configurations.
By default, Angular has a dev and prod environment, specified in the .angular-cli.json
"environments": {
"dev": "environments/environment.ts",
"prod": "environments/environment.prod.ts"
}
In these files, specify the API path:
environment.ts
export const environment = {
production: false,
apiUrl: '//localhost:8000'
};
environment.prod.ts
export const environment = {
production: true,
apiUrl: '//my-api-domain.tld'
};
You can add as many environments as you want (f.ex. for tests, beta, etc.). In angular, you can use the environment by importing it:
import {environment} from '../environments/environment';
But I suggest creating a config service following this answer: https://stackoverflow.com/a/43193574/7933618
I ended up by using another backend. In my case an nodeJS server was the best, fast and most simple solution.
When I try and run a test using the Apache LDAP API, I am getting the following error. I set up a Maven project , and my pom.xml has many dependencies for the Apache Directory server and API artifacts. My code (which I copied and pasted an example, just to get up and running, so that I can explore) all builds fine. However, when I run it (as a Junit Test), I get the following....
Can anyone help me? maybe even just provide an example of where the Apache LDAP API is being used successfully, and maybe give me the pom.xml with the correct dependencies also? (The apche LDAP API documentation seems to be out of date).
I am currently starting the test using the embedded Apache Directory server, using the following...
#RunWith(FrameworkRunner.class)
#CreateLdapServer(transports =
{
#CreateTransport(protocol = "LDAP") ,
#CreateTransport(protocol = "LDAPS") })
// disable changelog, for more info see DIRSERVER-1528
#CreateDS(enableChangeLog = false, name = "PasswordPolicyTest")
public class PasswordPolicyIT extends AbstractLdapTestUnit
{ .......etc }
So, therefore, an alternative approach, is that if I tailor some of the tests to just connect to a local Directory Server instance that I have running on my machine. I assume that this would stop the error messages that I am getting below..Again, if anyone could provide a code snippet there, it would be useful..
Many Thanks
> 2013-06-20 16:05:10 ERROR FrameworkRunner:287 - Problem locating LDIF
> file in schema repository Multiple copies of resource named
> 'schema/ou=schema/cn=apachemeta/ou=matchingrules/m-oid=1.3.6.1.4.1.18060.0.4.0.1.3.ldif'
> located on classpath at urls
> jar:file:/Users/rk/.m2/repository/org/apache/directory/api/api-ldap-client-all/1.0.0-M17/api-ldap-client-all-1.0.0-M17.jar!/schema/ou%3dschema/cn%3dapachemeta/ou%3dmatchingrules/m-oid%3d1.3.6.1.4.1.18060.0.4.0.1.3.ldif
> jar:file:/Users/rk/.m2/repository/org/apache/directory/shared/shared-ldap-schema-data/1.0.0-M7/shared-ldap-schema-data-1.0.0-M7.jar!/schema/ou%3dschema/cn%3dapachemeta/ou%3dmatchingrules/m-oid%3d1.3.6.1.4.1.18060.0.4.0.1.3.ldif
> jar:file:/Users/rk/.m2/repository/org/apache/directory/server/apacheds-all/2.0.0-M12/apacheds-all-2.0.0-M12.jar!/schema/ou%3dschema/cn%3dapachemeta/ou%3dmatchingrules/m-oid%3d1.3.6.1.4.1.18060.0.4.0.1.3.ldif
You need to exclude the shared-ldap-schema-data dependency from apacheds-all. Take a look at this comment