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Possible ticket file format:

   "Ticket"
   title: TEXT
   ticketid: TEXT
   exists-in: BASELINE   -- 0 or more
   fixed-in: BASELINE    -- 0 or more
   tag: TAG              -- 0 or more
   created: DATETIME
   attachment: FILENAME DESCRIPTION
   parent: UUID*
   derived-from: TICKET-FILENAME
   description: MULTILINE-TEXT
   remarks: MULTILINE-TEXT

   * Things handles with tags:
     created-by
     assigned-to
     priority
     severity
     target-release
     status
     resolution
     type
     subsystem

Wiki header format:
   "WikiPage"
   parent: UUID*
   title: TEXT
   pagename: TEXT
   mode: (readonly|appendonly|readwrite)
   attachment: UUID name description

   * Header ends with a blank line.  wiki content follows.

Cluster format:

   "Cluster"
   (UUID\n)+

   * Cluster generated in server mode only.
   * Embargo cluster that reference phantoms or other embargoed clusters.
   * Never send or ihave an embargoed cluster

New sync algorithm based on clusters:

   * Keep a table of unclustered artifacts.  Strive to keep this table
     less than 100 entries.
   * Client sends content of unclustered table as ihaves to server
   * Server builds a new cluster if size of cluster table >100.
   * Server sends unclustered table to client
   * Server sends gimme for all unknown ihave received from client
   * Client sends gimme for all unknown ihave received from server
   * Previous two steps repeat until no more gimmes

Details of new push algorithm:

   * Table "unsent" contains all files never pushed
   * TEMP table "wanted" contains files the server does not have
   Loop:
     * Client sends login and "push" record
     * Client sends file message for all files in unsent and removes
       those files from the table.
     * Client sends file message for all files in wanted.
     * Client sends ihave messages for each entry in unclustered
     ------
     * Server receives file message
     * Server creates phantoms for unknown ihaves
     * Server sends gimme messages for all phantoms
     ------
     * For each gimme message add an entry to wanted
     * Halt if the wanted table is empty

Details on new pull algorithm:

   Loop:
     * Client sends login and "pull" record
     * Client sends "prior" message with repository id and max record number
     * Client sends "gimme" for each phantom
     --------
     * Server creates new clusters to get unclustered size below 100
     * If there is "prior" message with repository id that matches this
       server, then send file messages for all record ids greater than
       prior
     * Server sends ihave messages for each entry in unclustered
     * Server sends maxrid message
     --------
     * Client receives file records
     * Client creates phantoms for unknown ihaves
     * If no phantoms exist, record maxrid for the server and halt

Need a dephantomize algorithm


Auxiliary tables needed for new sync algorithm:

   * unsent:  files that have never been sent to another repository
   * unclustered: non-phantom files not mentioned by a cluster

Random thoughts:

  *  Changes to manifest to support:
     +  Trees of wiki pages and tickets
     +  The ability to cap or close a branch
     +  See "Extended Manifests" below





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