More explanation of federation keys.

This commit is contained in:
Kegan Dougal 2014-09-03 17:59:54 +01:00
parent 1a32b1f002
commit f68dbbd3da

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@ -1511,6 +1511,31 @@ Each transaction has:
- A list of "previous IDs".
- A list of PDUs and EDUs - the actual message payload that the Transaction carries.
``origin``
Type:
String
Description:
DNS name of homeserver making this transaction.
``ts``
Type:
Integer
Description:
Timestamp in milliseconds on originating homeserver when this transaction
started.
``previous_ids``
Type:
List of strings
Description:
List of transactions that were sent immediately prior to this transaction.
``pdus``
Type:
List of Objects.
Description:
List of updates contained in this transaction.
::
{
@ -1551,8 +1576,98 @@ All PDUs have:
- A list of other PDU IDs that have been seen recently on that context (regardless of which origin
sent them)
[[TODO(paul): Update this structure so that 'pdu_id' is a two-element
[origin,ref] pair like the prev_pdus are]]
``context``
Type:
String
Description:
Event context identifier
``origin``
Type:
String
Description:
DNS name of homeserver that created this PDU.
``pdu_id``
Type:
String
Description:
Unique identifier for PDU within the context for the originating homeserver
``ts``
Type:
Integer
Description:
Timestamp in milliseconds on originating homeserver when this PDU was created.
``pdu_type``
Type:
String
Description:
PDU event type.
``prev_pdus``
Type:
List of pairs of strings
Description:
The originating homeserver and PDU ids of the most recent PDUs the
homeserver was aware of for this context when it made this PDU.
``depth``
Type:
Integer
Description:
The maximum depth of the previous PDUs plus one.
.. TODO paul
[[TODO(paul): Update this structure so that 'pdu_id' is a two-element
[origin,ref] pair like the prev_pdus are]]
For state updates:
``is_state``
Type:
Boolean
Description:
True if this PDU is updating state.
``state_key``
Type:
String
Description:
Optional key identifying the updated state within the context.
``power_level``
Type:
Integer
Description:
The asserted power level of the user performing the update.
``min_update``
Type:
Integer
Description:
The required power level needed to replace this update.
``prev_state_id``
Type:
String
Description:
PDU event type.
``prev_state_origin``
Type:
String
Description:
The PDU id of the update this replaces.
``user``
Type:
String
Description:
The user updating the state.
::
@ -1593,12 +1708,13 @@ keys exist to support this:
"prev_state_id":TODO
"prev_state_origin":TODO}
[[TODO(paul): At this point we should probably have a long description of how
State management works, with descriptions of clobbering rules, power levels, etc
etc... But some of that detail is rather up-in-the-air, on the whiteboard, and
so on. This part needs refining. And writing in its own document as the details
relate to the server/system as a whole, not specifically to server-server
federation.]]
.. TODO paul
[[TODO(paul): At this point we should probably have a long description of how
State management works, with descriptions of clobbering rules, power levels, etc
etc... But some of that detail is rather up-in-the-air, on the whiteboard, and
so on. This part needs refining. And writing in its own document as the details
relate to the server/system as a whole, not specifically to server-server
federation.]]
EDUs, by comparison to PDUs, do not have an ID, a context, or a list of
"previous" IDs. The only mandatory fields for these are the type, origin and