: Class HTTP_ServerOverlayHandler

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edu.virginia.cs.mng.hypercast
Class HTTP_ServerOverlayHandler

java.lang.Object
  |
  +--edu.virginia.cs.mng.hypercast.HTTP_ServerOverlayHandler

The handler for overlay functions (create overlay, does overlay exist, etc.)

Field Summary
`(package private) java.util.Hashtable`	`idsToAttributes` Map of created Overlays to each Overlay's key attributes.
`(package private) java.lang.String`	`uniqueProcessPrefix` Unique prefix for this process.

Constructor Summary
`HTTP_ServerOverlayHandler(java.lang.String upp)`

Method Summary
`private java.lang.String`	`generateID()` Creates a new unique overlayID.
`java.lang.String`	`generateResponse(java.util.Hashtable parsedAttributes)` Generates single string response to request.
`private java.lang.String`	`getKeyAttributes(java.util.Hashtable parsedAttributes)` Extract the "KeyAttributes" from the hashtable and place them in a CGI string.

Methods inherited from class java.lang.Object

, 
clone, 
equals, 
finalize, 
getClass, 
hashCode, 
notify, 
notifyAll, 
registerNatives, 
toString, 
wait, 
wait, 
wait

Field Detail

java.util.Hashtable idsToAttributes

Map of created Overlays to each Overlay's key attributes.

java.lang.String uniqueProcessPrefix

Unique prefix for this process. It is usually an IP_Address plus port number. It is used to generate a unique Overlay ID

Constructor Detail

public HTTP_ServerOverlayHandler(java.lang.String upp)

Parameters:: upp - The prefix for new OverlayIDs. It is unique over all processes and machines.

Method Detail

public java.lang.String generateResponse(java.util.Hashtable parsedAttributes)

Generates single string response to request.

private java.lang.String generateID()

Creates a new unique overlayID. Format: uniqueProcessPrefix + "TS" + milliseconds since epoch.

private java.lang.String getKeyAttributes(java.util.Hashtable parsedAttributes)

Extract the "KeyAttributes" from the hashtable and place them in a CGI string.