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Line 128: − + − It is possible to subscribe to server events. Notification will happen using HTML5 [[wikipedia:Server-sent_events|Server-sent events]].+ − To start subscription, send the following request:+ − '''GET''' /?cmd='''subscribe'''[&only_commits=1]+ − − Where: − * {{Code|only_commits}},<br>subscribers can be notified only with ''commit'' events; that is useful to minimize interactions between server and clients. − − Response will be served with ''text/event-stream'' MIME type for default SSE message type. SSE message will be a JSONified object with the following, at least, attributes: − − * {{Code|event}}<br>event type. Line 147:
Line 155: − + − − Packages metadata ''database'' might be considered as a temporal solution when, and if, [http://distributions.freedesktop.org/wiki/AppStream/MetadataNotes AppStream's MetadataNotes] will be reused in the future.
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Data to receive:
Data to receive:
:* property value in JSON notation.
:* property value in JSON notation.
=== Notifications ===
It is possible to subscribe to server events. Notification will happen using HTML5 [[wikipedia:Server-sent_events|Server-sent events]].
To start subscription, send the following request:
'''GET''' /?cmd='''subscribe'''[&only_commits=1]
Where:
* {{Code|only_commits}},<br>subscribers can be notified only with ''commit'' events; that is useful to minimize interactions between server and clients.
Response will be served with ''text/event-stream'' MIME type for default SSE message type. SSE message will be a JSONified object with the following, at least, attributes:
* {{Code|event}}<br>event type.
=== Usage statistics ===
=== Usage statistics ===
* {{Code|values}} an array of {{Code|timestamp, row}} tuples when {{Code|row}} is a dictionary of database field names and values.
* {{Code|values}} an array of {{Code|timestamp, row}} tuples when {{Code|row}} is a dictionary of database field names and values.
=== Notifications ===
=== GNU/Linux packages meta database ===
There is a special Project resource, ''Packages''. This project is intended to support a metadata ''database'' for all GNU/Linux packages that are being used as dependencies for activities Sugar Network provides.
Every entry in the ''Packages'' project is a map of native package names to a particular GNU/Linux distribution. So, activities mention only ''Packages'' entry name as a dependency. Afterwards, on a client side, a ''Packages'' entry name will be resolved to a package name according to the local distribution and it will be passed to the PackageKit to install corresponding dependency.
''Packages'' project might be considered as a temporal solution when, and if, [http://distributions.freedesktop.org/wiki/AppStream/MetadataNotes AppStream's MetadataNotes] will be reused in the future.
== Additional resources ==
== Additional resources ==
* {{Code|PACKAGE}}<br>a name of the particular package.
* {{Code|PACKAGE}}<br>a name of the particular package.
[[Sugar Network]] supports a metadata ''database'' for all packages that are being used as dependencies for activities it provides (see ''Packages'' project using one of the existing [[Sugar_Network#Try_it|Sugar Network clients]]). Every entry in the ''database'' contains a map of native package names for a particular GNU/Linux distribution. So, activities mention only the ''database'' entry name as a dependency. [[Sugar Network]] will automatically generate dependency graphs for packagekit-backend-presolve using the ''metadata'' database. Afterwards, on the launch side, the ''database'' entry name will be resolved to a package name according to the local distribution and it will be passed to the PackageKit (on XO laptops, packagekit-backend-presolve will be used; on regular platforms, the default PackageKit back-end is used).
Using [[#GNU/Linux packages meta database|Packages]]'s metadata, [[Sugar Network]] will automatically generate dependency graphs for packagekit-backend-presolve.
== Local resources ==
== Local resources ==