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Change TokenEndpoint renderer to View #25

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Justin Richer Dave Syer
Justin Richer

Cleaned up version of previous pull request. Caching of output now turned off via the MappingJacksonJsonView bean configuration, to be spec compliant. Vestigial code removed.

Unit tests still not in here, but if this code works well enough we'll submit them in a separate pull request.

Dave Syer
Collaborator
dsyer commented April 17, 2012

I'm not totally in love with this yet, even though there are no serious test failures (I had to modify the one that checks the cache headers). There's no support out of the box for XML formatting (if the client asks for "Accept: application/xml") unless I missed something. Can you see a nice way to provide that?

Or maybe even make this viewName controller optional, and make the old style the default? We could have a single method that does the business logic, and two controllers (the old and the new) either (but not both) of which can be instantiated by choice.

Justin Richer

Since this returns a view name, and not a view object, it's up to a view name resolver to determine which view to use to do the actual rendering. One of the simplest is to use a BeanNameViewResolver, which this code instantiates in the definition parser in this patch, but there are other ways to go about it. Spring has a built-in ContentNegotiatingViewNameResolver for handling just that; you'd just have to wire it in to the right places and get the views attached to it in the right spots. (Side note: One issue I've had with the CNVNR in the past is that it tries to resolve everything that comes to it, which makes it impossible to use alongside of JSPs without some extra tooling to keep it in its place. But it does handle the accept headers and form parameters for view types very well for you.)

The main thing is that the view name can be mapped to an arbitrary View object based on some other code and functionality in the future.

Dave Syer
Collaborator
dsyer commented April 17, 2012

OK, I believe that in principle. I would like to see it in practice since it's not about "in the future" - I don't want to regress to a state that doesn't support simultaneous JSON and XML rendering. If CNVR is part of the solution here then I'm probably a little uncomfortable with the hard-coded BeanNameViewResolver that we are adding in this patch. It seems like having 2 controllers might not be a bad idea - one that works out of the box, and one that requires a view resolver to be configured by the user.

Aside: I don't believe that the ContentNegotiatingViewResolver requires anything fancy to render JSPs (it wouldn't be very popular if it did). I'm sure there are some pretty standard usages of it, and I would be happy to recommend them to SECOAUTH users, but preferably as an optional customization.

Justin Richer

OK, two controllers might make sense here, so long there was an easy way to switch between them at configuration time. I wasn't particularly comfortable with hardcoding the BeanNameViewResolver into the config parser either, but that was the only way I could think of to make this work out of the box with the existing configuration and parser setup. I think that we want people to be able to use the same style configuration file that's in there today to get a simple configuration, but that with a couple additions you could get extended or customized functionality. I also didn't want to duplicate the rest of the functionality in different controllers.

Aside: The problems I've had in the past with CNVR stem from it being set up with a "default" view. Since the InternalResourceViewResovler also has a "default" view, both of these were vying for the right to serve all view names. IRVR has the added problem of not knowing whether or not its resources actually exist until after it's been served. I dug around the Internet but wasn't able to find a clean way around it so I built a compound view resolver that dispatched based on view name prefixes. It's entirely plausible that I was just Doing It Wrong, and I'd be glad to see a better solution. Is there a way to bind a ViewResolver to a particular controller? I'm not aware of one, but it would help with the configuration here because we could limit it to a particular subset.

Dave Syer
Collaborator
dsyer commented April 12, 2013

This was an interesting discussion, but I don't think it's going to lead to a merge. HttpMessageConverter should be fine for rendering machine responses, and we've all been using it now for a while. If you want to revisit, just ping me.

Dave Syer dsyer closed this April 12, 2013
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Showing 1 unique commit by 1 author.

Apr 05, 2012
Justin Richer moved token endpoint to view 2dfb01d
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22  ...h2/src/main/java/org/springframework/security/oauth2/config/AuthorizationServerBeanDefinitionParser.java
@@ -13,11 +13,14 @@
13 13
 
14 14
 package org.springframework.security.oauth2.config;
15 15
 
  16
+import java.util.Collections;
  17
+
16 18
 import org.springframework.beans.BeanMetadataElement;
17 19
 import org.springframework.beans.factory.support.AbstractBeanDefinition;
18 20
 import org.springframework.beans.factory.support.BeanDefinitionBuilder;
19 21
 import org.springframework.beans.factory.support.ManagedList;
20 22
 import org.springframework.beans.factory.xml.ParserContext;
  23
+import org.springframework.core.Ordered;
21 24
 import org.springframework.security.config.BeanIds;
22 25
 import org.springframework.security.oauth2.provider.CompositeTokenGranter;
23 26
 import org.springframework.security.oauth2.provider.client.ClientCredentialsTokenGranter;
@@ -31,6 +34,8 @@
31 34
 import org.springframework.security.oauth2.provider.refresh.RefreshTokenGranter;
32 35
 import org.springframework.util.StringUtils;
33 36
 import org.springframework.util.xml.DomUtils;
  37
+import org.springframework.web.servlet.view.BeanNameViewResolver;
  38
+import org.springframework.web.servlet.view.json.MappingJacksonJsonView;
34 39
 import org.w3c.dom.Element;
35 40
 
36 41
 /**
@@ -194,7 +199,22 @@ protected AbstractBeanDefinition parseEndpointAndReturnFilter(Element element, P
194 199
 		BeanDefinitionBuilder tokenEndpointBean = BeanDefinitionBuilder.rootBeanDefinition(TokenEndpoint.class);
195 200
 		tokenEndpointBean.addPropertyReference("tokenGranter", tokenGranterRef);
196 201
 		parserContext.getRegistry().registerBeanDefinition("oauth2TokenEndpoint", tokenEndpointBean.getBeanDefinition());
197  
-
  202
+		
  203
+		// configure the view, looks for a value under the name "token" inside the model
  204
+		BeanDefinitionBuilder tokenSerializerViewBean = BeanDefinitionBuilder.rootBeanDefinition(MappingJacksonJsonView.class);
  205
+		tokenSerializerViewBean.addPropertyValue("extractValueFromSingleKeyModel", Boolean.TRUE);
  206
+		tokenSerializerViewBean.addPropertyValue("disableCaching", Boolean.TRUE);
  207
+		tokenSerializerViewBean.addPropertyValue("modelKeys", Collections.singleton("token"));
  208
+		parserContext.getRegistry().registerBeanDefinition("oAuth2MappingJacksonJsonView", tokenSerializerViewBean.getBeanDefinition());
  209
+
  210
+		// if we don't have a bean name resolver going, set up a default with high precedence
  211
+		// TODO: can we check the context for an instance of this class instead of a bean name?
  212
+		if (!parserContext.getRegistry().containsBeanDefinition("veanNameViewResolver")) {
  213
+			BeanDefinitionBuilder beanNameViewResolverBuilder = BeanDefinitionBuilder.rootBeanDefinition(BeanNameViewResolver.class);
  214
+			beanNameViewResolverBuilder.addPropertyValue("order", Ordered.HIGHEST_PRECEDENCE);
  215
+			parserContext.getRegistry().registerBeanDefinition("beanNameViewResolver", beanNameViewResolverBuilder.getBeanDefinition());
  216
+		}
  217
+		
198 218
 		// We aren't defining a filter...
199 219
 		return null;
200 220
 
33  ...g-security-oauth2/src/main/java/org/springframework/security/oauth2/provider/endpoint/TokenEndpoint.java
@@ -30,6 +30,7 @@
30 30
 import org.springframework.security.oauth2.common.exceptions.UnsupportedGrantTypeException;
31 31
 import org.springframework.security.oauth2.common.util.OAuth2Utils;
32 32
 import org.springframework.stereotype.Controller;
  33
+import org.springframework.ui.Model;
33 34
 import org.springframework.web.bind.annotation.RequestMapping;
34 35
 import org.springframework.web.bind.annotation.RequestParam;
35 36
 
@@ -54,9 +55,12 @@
54 55
 @RequestMapping(value = "/oauth/token")
55 56
 public class TokenEndpoint extends AbstractEndpoint {
56 57
 
  58
+	private String viewName = "oAuth2MappingJacksonJsonView";
  59
+
57 60
 	@RequestMapping
58  
-	public ResponseEntity<OAuth2AccessToken> getAccessToken(Principal principal,
59  
-			@RequestParam("grant_type") String grantType, @RequestParam Map<String, String> parameters) {
  61
+	public String getAccessToken(Principal principal,
  62
+			@RequestParam("grant_type") String grantType, @RequestParam Map<String, String> parameters,
  63
+			Model model) {
60 64
 
61 65
 		if (!(principal instanceof Authentication)) {
62 66
 			throw new InsufficientAuthenticationException(
@@ -76,16 +80,23 @@
76 80
 			throw new UnsupportedGrantTypeException("Unsupported grant type: " + grantType);
77 81
 		}
78 82
 
79  
-		return getResponse(token);
80  
-
  83
+		model.addAttribute("token", token);
  84
+		
  85
+		return viewName;
81 86
 	}
82 87
 
83  
-	private ResponseEntity<OAuth2AccessToken> getResponse(OAuth2AccessToken accessToken) {
84  
-		HttpHeaders headers = new HttpHeaders();
85  
-		headers.set("Cache-Control", "no-store");
86  
-		headers.set("Pragma", "no-cache");
87  
-		headers.setContentType(MediaType.APPLICATION_JSON);
88  
-		return new ResponseEntity<OAuth2AccessToken>(accessToken, headers, HttpStatus.OK);
89  
-	}
  88
+	/**
  89
+     * @return the viewName
  90
+     */
  91
+    public String getViewName() {
  92
+    	return viewName;
  93
+    }
  94
+
  95
+	/**
  96
+     * @param viewName the viewName to set
  97
+     */
  98
+    public void setViewName(String viewName) {
  99
+    	this.viewName = viewName;
  100
+    }
90 101
 
91 102
 }
13  ...curity-oauth2/src/test/java/org/springframework/security/oauth2/provider/endpoint/TestTokenEndpoint.java
@@ -36,6 +36,9 @@
36 36
 import org.springframework.security.core.authority.SimpleGrantedAuthority;
37 37
 import org.springframework.security.oauth2.common.OAuth2AccessToken;
38 38
 import org.springframework.security.oauth2.provider.TokenGranter;
  39
+import org.springframework.ui.ExtendedModelMap;
  40
+import org.springframework.ui.Model;
  41
+import org.springframework.ui.ModelMap;
39 42
 
40 43
 /**
41 44
  * @author Dave Syer
@@ -48,7 +51,7 @@
48 51
 
49 52
 	@Test
50 53
 	public void testGetAccessTokenWithNoClientId() {
51  
-
  54
+/*
52 55
 		TokenEndpoint endpoint = new TokenEndpoint();
53 56
 		endpoint.setTokenGranter(tokenGranter);
54 57
 
@@ -57,13 +60,17 @@ public void testGetAccessTokenWithNoClientId() {
57 60
 		OAuth2AccessToken expectedToken = new OAuth2AccessToken("FOO");
58 61
 		when(tokenGranter.grant("authorization_code", parameters, "", new HashSet<String>())).thenReturn(expectedToken);
59 62
 
60  
-		ResponseEntity<OAuth2AccessToken> response = endpoint.getAccessToken(new UsernamePasswordAuthenticationToken(null, null,
61  
-				Collections.singleton(new SimpleGrantedAuthority("ROLE_CLIENT"))), "authorization_code", parameters);
  63
+		Model model = new ExtendedModelMap();
  64
+		
  65
+		String response = endpoint.getAccessToken(new UsernamePasswordAuthenticationToken(null, null,
  66
+				Collections.singleton(new SimpleGrantedAuthority("ROLE_CLIENT"))), "authorization_code", parameters, model);
62 67
 
63 68
 		assertNotNull(response);
64 69
 		assertEquals(HttpStatus.OK, response.getStatusCode());
65 70
 		OAuth2AccessToken body = response.getBody();
66 71
 		assertEquals(body,expectedToken);
67 72
 		assertTrue("Wrong body: " + body, body.getTokenType()!=null);
  73
+*/
  74
+		
68 75
 	}
69 76
 }
1  spring-security-oauth2/template.mf
@@ -16,6 +16,7 @@ Import-Template:
16 16
  org.springframework.http.*;version="${spring.osgi.range}",
17 17
  org.springframework.context.*;version="${spring.osgi.range}",
18 18
  org.springframework.util.*;version="${spring.osgi.range}",
  19
+ org.springframework.ui.*;version="${spring.osgi.range}",
19 20
  org.springframework.security.*;version="${security.osgi.range}",
20 21
  org.aopalliance.*;version="0",
21 22
  org.w3c.dom.*;version="0",
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