I am new to Apache Camel Framework. I have to develop an application in Spring Boot and Camel which polls given directory repeatedly(even after the directory undergo any modifications, the poller should go on polling for another scheduled interval and so on.
I found something like below code in camel.
public class FilePoller extends RouteBuilder {
#Override
public void configure() {
from("file:H:\\InputFolder?delay=1000&noop=true")
.process(new Processor() {
public void process(Exchange msg) {
File file = msg.getIn().getBody(File.class);
//LOG.info("Processing file: " + file);
System.out.println("Polling file:"+file);
}
});
}
}
The above code only waits for 1 second and then execute the subsequent code without polling the directory.
Can anybody help me in developing a Spring Boot-Camel application that polls a directory or a file repeatedly every given interval of time. Thanks in advance
Refer this camel file component documentation.
https://github.com/apache/camel/blob/master/camel-core/src/main/docs/file-component.adoc
To integrate with Spring boot you need to use SB version < 2.0
Related
I'm trying to move my http4 certificate configuration away from RouteBuilder class and to application.yml file. My code is exactly like the Java example on this page under the "Setting up SSL for HTTP Client - Programmatic Configuration of the Component": (https://camel.apache.org/http4.html#HTTP4-UsingtheJSSEConfigurationUtility). However, on the website there is no yml example, only the Java solution that I currently have and Spring DSL solution. Does anybody know how to translate the Java code to yml?
#Configuration
public class configureHttps4Certificate extends RouteBuilder {
#Override
public void configure() throws Exception {
KeyStoreParameters ksp = new KeyStoreParameters();
ksp.setResource("pathToResource");
ksp.setPassword("password");
TrustManagersParameters tmp = new TrustManagersParameters();
tmp.setKeyStore(ksp);
SSLContextParameters scp = new SSLContextParameters();
scp.setTrustManagers(tmp);
HttpComponent httpComponent = getContext().getComponent("https4", HttpComponent.class);
httpComponent.setSslContextParameters(scp);
}
}
If you use SpringBoot you can easily create Java configuration classes that automatically import values from property or YAML files just by using one annotation.
#ConfigurationProperties("app.config")
public class MyConfiguration
Check out this section of the SpringBoot documentation that describes this mechanism.
I have camel route which basically used to move files from source to destination as below
public class SimpleRouteBuilder extends RouteBuilder {
#Override
public void configure() throws Exception {
from("file:C:/inputFolder?noop=true").to("file:C:/outputFolder");
}
}
Question is which annotation(#component or #Configuration) should be used to load this route
If you are using Spring or Spring Boot etc then it should be #Component which ensures the class is enlisted into the spring bean registry, which Camel then scans for RouteBuilder classes and automatic adds to the CamelContext.
Mind that Spring Boot has some classpaths it only scans (I think its the package of the main class and sub packages), so if you put it inside other packages outside that, you may need to configure spring boot to scan for other packages.
I am trying to build an application with AngularJS 1.x, Spring Boot REST with Spring Security. Though I have intermediate knowledge on Spring REST itself, I am quite new to AngularJS and Spring Security.
I have given the github link of the application I have developed so far. Its in skeletal form still, and nothing is working:
https://github.com/imrnk/touchinghand
I will list down the problems and confusion I am having below:
1) I am using ui-router states to navigate from one state to another. So far I have identified two states: the "login" page and a link from there to "registration" page. Once the user will logged in, she will land to a dashboard. But this dashboard is yet to be created.
Now this login.html could be said as the entry point to the application. And when I type localhost:8080/ it should redirect to localhost:8080/login. Now I can see the page is redirecting correctly to the login.html but the templates I am using (login.template.html or register.template.html) inside login.html is not loading... However, when I am running through node js using browsersync, I see the page is loading with all the contents in it.
2) I tried disabling the spring security and then I see the login page is loaded correctly. So I guessed it could be a spring security issue, but what exactly is the issue I couldn't figure out.
My HttpSecurity configuration inside the implementation of WebSecurityConfigurerAdapter looks like this:
#Override
protected void configure(HttpSecurity http) throws Exception {
http.authorizeRequests()
.antMatchers("/", "/login", "/register", "/**/*.css",
"/**/*.js", "/**/**/*.css", "/**/**/*.js",
"/**/**/**/*.css", "/**/**/**/*.js",
"/**/**/**/**/*.css", "/**/**/**/**/*.js", "/**/home.html", "**/login.html",
"**/**/login.template.html", "**/**/registration.template.html")
.permitAll().
regexMatchers("/registration*")
.permitAll()
.anyRequest().authenticated()
.and()
.formLogin().loginPage("/login").permitAll()
.and()
.logout().permitAll();
}
And my MvcConfig looks like this:
#Configuration
public class MvcConfig extends WebMvcConfigurerAdapter {
public void addResourceHandlers(ResourceHandlerRegistry registry) {
super.addResourceHandlers(registry);
registry.addResourceHandler("classpath:/resources/static/css/**")
.addResourceLocations("classpath:/resources/static/css/");
registry.addResourceHandler("classpath:/resources/js/**").addResourceLocations("classpath:/resources/js/");
registry.addResourceHandler("classpath:/resources/static/**")
.addResourceLocations("classpath:/resources/static/");
registry.addResourceHandler("classpath:/resources/static/templates/**")
.addResourceLocations("classpath:/resources/static/templates/");
}
#Override
public void addViewControllers(ViewControllerRegistry registry) {
super.addViewControllers(registry);
registry.addViewController("/").setViewName("forward:/login");
//registry.addViewController("/login").setViewName("forward:/login");
registry.addViewController("login.html");
//registry.addViewController("register").setViewName("registration");
// registry.addViewController("/registration.html");
//registry.addViewController("/dashboard").setViewName("dashboard");
//registry.addViewController("/dashboard.html");
}
#Override
public void configureViewResolvers(ViewResolverRegistry registry) {
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("static/");
resolver.setSuffix(".html");
registry.viewResolver(resolver);
}
}
My LoginController class which anotated as #Controller has this:
#RequestMapping(value={"/"}, method = RequestMethod.GET)
public String showLogin(Model model){
model.addAttribute("user", new UserDTO());
return "/login";
}
3) I am quite confused between what should be the name of the resolved views and how that could map with the angular templates html.
I suspect, probably I am following a pure REST approach, and hanging in the middle with some aspect of Spring MVC and Spring REST. Introducing Spring Security also increased the problem for now.
I am also attaching the firefox developer network screenshot if that could help
enter image description here
Kindly help me out. Thanks.
I have a back-end which is build on spring-boot and then some custom code from my school built upon that.
The front-end is pure angular application which I serve from a different server trough a gulp serve.
They're only connected by REST calls.
There's already an authentication module running on the backend and to now I need to serve this angular application from the same tomcat server the back-end is running on so it can also use this authentication module.
I've found this about multiple connectors so I copied it as following class to set up multiple connectors:
#ConfigurationProperties
public class TomcatConfiguration {
#Bean
public EmbeddedServletContainerFactory servletContainer() {
TomcatEmbeddedServletContainerFactory tomcat = new TomcatEmbeddedServletContainerFactory();
//tomcat.addAdditionalTomcatConnectors(createSslConnector());
return tomcat;
}
private Connector createSslConnector() {
Connector connector = new Connector("org.apache.coyote.http11.Http11NioProtocol");
Http11NioProtocol protocol = (Http11NioProtocol) connector.getProtocolHandler();
try {
File keystore = new ClassPathResource("keystore").getFile();
File truststore = new ClassPathResource("keystore").getFile();
connector.setScheme("https");
connector.setSecure(true);
connector.setPort(8443);
protocol.setSSLEnabled(true);
protocol.setKeystoreFile(keystore.getAbsolutePath());
protocol.setKeystorePass("changeit");
protocol.setTruststoreFile(truststore.getAbsolutePath());
protocol.setTruststorePass("changeit");
protocol.setKeyAlias("apitester");
return connector;
} catch (IOException ex) {
throw new IllegalStateException("can't access keystore: [" + "keystore"
+ "] or truststore: [" + "keystore" + "]", ex);
}
}
}
Problem is that I don't see or find how I should setup these connectors so they serve from my angularJS build folder.
Upon searching I came upon Spring-Boot : How can I add tomcat connectors to bind to controller but I'm not sure if in that solution I should change my current application or make a parent application for both applications.
My current application main looks like this:
#Configuration
#ComponentScan({"be.ugent.lca","be.ugent.sherpa.configuration"})
#EnableAutoConfiguration
#EnableSpringDataWebSupport
public class Application extends SpringBootServletInitializer{
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
If possible I'd like some more info about what connectors are in the spring-boot context.
If this is not the way to go I'd like someone to be able to conform this second solution or suggest a change in my code.
I'm really not sure enough about these solution that I want to go breaking my application over it. (though it's backed up with github)
Just place your AngularJS + other front-end assets into src/main/resources/static folder, Spring Boot will serve them automatically.
I've been following the tutorial for integrating Spring Security with AngularJS, but it uses Spring Boot. I can get the tutorial examples working, but I need my app to run as a regular MVC application under Tomcat.
The problem is getting the application to route to the index.html page for the initial view. The only mappings I have in the controllers are the REST calls I want to receive from Angular, but I can't seem to get the application to go to the index page. Spring Boot does this automatically, but I'm going to run this as a web app under Tomcat. Trying to go there directly causes a 'No mapping found' error.
I'm using Java configuration and have the antMatchers, etc as described in the tutorial.
Here are a few entries in my config classes to make this happen.
#Override
protected void configure(HttpSecurity http) throws Exception {
http.authorizeRequests()
.antMatchers("/index.html", "/home.html", "/login.html", "/").permitAll()
.antMatchers("/css/**").permitAll()
.antMatchers("/js/**").permitAll()
.antMatchers(HttpMethod.POST, "/user").permitAll().anyRequest()
.authenticated().and()
.csrf()
.csrfTokenRepository(csrfTokenRepository()).and()
.addFilterAfter(csrfHeaderFilter(), CsrfFilter.class);
if ("true".equals(System.getProperty("httpsOnly"))) {
LOGGER.info("launching the application in HTTPS-only mode");
http.requiresChannel().anyRequest().requiresSecure();
}
}
#Configuration
#EnableWebMvc
#ComponentScan("com.mygroupnotifier.controller")
public class ServletContextConfig extends WebMvcConfigurerAdapter {
#Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/css/**").addResourceLocations("/resources/static/css/");
registry.addResourceHandler("/js/**").addResourceLocations("/resources/static/js/");
registry.addResourceHandler("/*.html").addResourceLocations("/resources/static/");
}
#Override
public void addViewControllers(ViewControllerRegistry registry) {
registry.addViewController("/").setViewName("forward:/index.html");
}
}
As usual the most difficult part of this is getting the leading and ending / on the classes and the html files.