Load AuthenticationProvider based on property value

[lunias]

Hello, I'm new to Spring and I've been referencing the Greenhouse application to get myself started. I really like the annotation based configuration method used in favor of xml and I'd like to continue it throughout. I know that Spring Security is "best configured via xml", but I was wondering if something like this was possible...

I want to check an environment property and load either an ldap or database-based AuthenticationProvider based on the value. I've mocked up the following code, but I'm running into an issue with the fact that the AuthenticationManager is hard-coded to load a bean with the name "org.springframework.security.authenticationManage r" and throws an exception if it can't find it (ignoring my own)... -_-.

Is it possible to override this behavior by naming my bean to match or by some other method? I'm not understanding how to set up authentication-manager-ref and if it will even help me here.

	@Configuration
	@Profile("embedded")
	static class Embedded {	
		
		@Inject
		private Environment environment;
		
		@Inject
		private AccountRepository accountRepository;			

		@Bean
		public AuthenticationManager authenticationManager() {
			List<AuthenticationProvider> authenticationProviders = new ArrayList<AuthenticationProvider>();
			
			if(isLdapEnabled()) {
				authenticationProviders.add(ldapAuthenticationProvider());
			}
			authenticationProviders.add(standardAuthenticationProvider());
						
			return new ProviderManager(authenticationProviders);
		}
		
		@Bean
		public AuthenticationProvider standardAuthenticationProvider() {
			return new UsernamePasswordAuthenticationProvider(accountRepository);
		}
		
		@Bean
		public AuthenticationProvider ldapAuthenticationProvider() {
			return new CustomLdapAuthenticationProvider(ldapAuthenticator(), accountRepository);
		}
		
		@Bean
		public LdapAuthenticator ldapAuthenticator() {
			LdapAuthenticator la = new PasswordComparisonAuthenticator(contextSource());
			((AbstractLdapAuthenticator) la).setUserDnPatterns(new String[] {"sAMAccountName={0}"});
			return la;
		}
		
		@Bean
		public BaseLdapPathContextSource contextSource() {
			BaseLdapPathContextSource cs = new DefaultSpringSecurityContextSource(
					"ldap://myldapserver");
			((AbstractContextSource) cs).setUserDn("myuserdn");
			((AbstractContextSource) cs).setPassword("mypass");
			return cs;
		}
		
		@Bean
		public PasswordEncoder passwordEncoder() {
			return new StandardPasswordEncoder("rando");
		}

		@Bean
		public TextEncryptor textEncryptor() {
			return Encryptors.noOpText();
		}	
		
		// helpers
		
		private boolean isLdapEnabled() {
			return Boolean.parseBoolean(environment.getProperty("security.ldap.isEnabled"));
		}

	}

Caused by: org.springframework.beans.factory.NoSuchBeanDefini tionException: No bean named 'org.springframework.security.authenticationManage r' is defined: Did you forget to add a gobal <authentication-manager> element to your configuration (with child <authentication-provider> elements)? Alternatively you can use the authentication-manager-ref attribute on your <http> and <global-method-security> elements.
at org.springframework.security.config.authentication .AuthenticationManagerFactoryBean.getObject(Authen ticationManagerFactoryBean.java:31)
at org.springframework.security.config.authentication .AuthenticationManagerFactoryBean.getObject(Authen ticationManagerFactoryBean.java:20)
at org.springframework.beans.factory.support.FactoryB eanRegistrySupport.doGetObjectFromFactoryBean(Fact oryBeanRegistrySupport.java:142)
... 68 more

[lunias]

I believe I spoke too soon. I think I've got it figured out:

<http use-expressions="true" authentication-manager-ref="myAuthenticationManager">

appears to have done the trick