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	* introduce new interface "dnsserver.Viewer", that allows a plugin implementing it to decide if a query should be routed into its server block. * add new plugin "view", that uses the new interface to enable a user to define expression based conditions that must be met for a query to be routed to its server block. Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
		
			
				
	
	
		
			21 lines
		
	
	
		
			690 B
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			21 lines
		
	
	
		
			690 B
		
	
	
	
		
			Go
		
	
	
	
	
	
| package dnsserver
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| 
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| import (
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| 	"context"
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| 
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| 	"github.com/coredns/coredns/request"
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| )
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| 
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| // Viewer - If Viewer is implemented by a plugin in a server block, its Filter()
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| // is added to the server block's filter functions when starting the server. When a running server
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| // serves a DNS request, it will route the request to the first Config (server block) that passes
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| // all its filter functions.
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| type Viewer interface {
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| 	// Filter returns true if the server should use the server block in which the implementing plugin resides, and the
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| 	// name of the view for metrics logging.
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| 	Filter(ctx context.Context, req *request.Request) bool
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| 
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| 	// ViewName returns the name of the view
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| 	ViewName() string
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| }
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