d91cb3ea61ea5096637c5d2b5e3e6147d0d2cce3 |
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13-Oct-2013 |
Svetoslav Ganov <svetoslavganov@google.com> |
The list of active print jobs in print service retunring wrong result. 1. The getActivePrintJobs() method in print service is designed to return the active print job i.e. ones scheduled to be processed by the print service. Now the correct list is returned. 2. The listeners for observing the state of print jobs may be called even after being unregistered. Ex: state change occurs and we schedule a message on the app's main thread to make the notificaion. Now the app unregisretes the callback and on the next loop the notification message is handled. bug:11200258 Change-Id: I4a497b5c9a7287a22023cafe41ce966d14300ca6
/frameworks/base/services/java/com/android/server/print/RemotePrintService.java
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b5f180608db6de123b54ae94de569ff1ebca705c |
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24-Sep-2013 |
Svetoslav <svetoslavganov@google.com> |
Multiple printer discovery session instances and other bugs. 1. The fused printers provider was dropping on the floor received printers if it was not active. It is in fact a loaded and if not active it should compute the printers and not deliver them until activated. This fixes an issue where opening the print dialog, then enabling a print service results in the printers reported by the service not showing up in the print dialog. 2. Printer discovery session was created twice which leads to incorrect behavior as the pint system is designed around the contract that there is a single printer discovery session per service at a time. This was possible due to an incorrect initialization of a member variable resulting in double session creation when the print service is connected. 3. When a print service is enabled during discovery we did not use the correct condition to start printer discovery resulting in starting it all the time even if not needed. Also if some of the printers that had to be tracked are reported by the service just enabled (typically historical printers) we did not ask the service to start tracking them. 4. Removed some logging. bug:10903343 Change-Id: I46c049471a4b099fc668df3aee2aaedc8d7786ac
/frameworks/base/services/java/com/android/server/print/RemotePrintService.java
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2fbd2a7f070f246ddafd9de94efa9a98861e9136 |
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17-Sep-2013 |
Svetoslav <svetoslavganov@google.com> |
App UI freezes when printing. API clean up. 1. The UI of a printing app was freezing a little when calling the print method since the print manager service was waiting for it to bind to the print spooler which generated the print job id (and the initial print job info really). Now the print manager service is responsible for job id generation and does not not wait for the print spooler to spin. Hence, the app UI is not blocked at all. Note that the print manager initiates the binding to the spooler and as soon as it completes the spooler shows the print UI which is hosted in its process. It is not possible to show the print UI before the system is bound to the spooler since during this binding the system passes a callback to the spooler so the latter can talk to the system. 2. Changed the print job id to be an opaque class allowing us to vary the way we generate print job ids in the future. 3. The queued print job state was hidden but the print job returned by the print method of the print manager is in that state. Now now hidden. 4. We were incorrecly removing print job infos if they are completed or cancelled. Doing that is problematic since the print job returned by the print method allows the app to query for the job info after the job has been say completed. Hence, an app can initiate printing and get a print job whose state is "created" and hold onto it until after the job is completed, now if the app asks for the print job info it will get an info in "created" state even though the job is "completed" since the spooler was not retaining the completed jobs. Now the spooler removes the PDF files for the completed and cancelled print jobs but keeps around the infos (also persisting them to disc) so it can answer questions about them. On first boot or switch to a user we purge the persisted print jobs in completed/cancelled state since they are obsolete - no app can have a handle to them. 5. Removed the print method that takes a file since we have a public PrintDocumentAdapter implementation for printing files. Once can instantiate a PrintFileDocumentAdapter and pass it to the print method. This class also allows overriding of the finish method to know when the data is spooled and deleted the file if desired, etc. 6. Replaced the wrong code to slice a large list of parcelables to use ParceledListSlice class. bug:10748093 Change-Id: I1ebeeb47576e88fce550851cdd3e401fcede6e2b
/frameworks/base/services/java/com/android/server/print/RemotePrintService.java
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de4fa2dfe2e681c79e27d84604b9c48c68184aef |
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14-Sep-2013 |
Svetoslav Ganov <svetoslavganov@google.com> |
Print system may get stuck bound to a print service 1. If a print service dies, is restarted and at the time of the restart the service has neither print jobs nor a discovery serssion it gets stuck into a bound state. Now it unbinds if after binding and ensuring it is in the lifecycle state right before the death there are no active print jobs and no discovery session. Also when a print service dies we fail all of its print jobs but did not update the service that all of its print jobs are handled, i.e. it has no active print jobs. 2. Fixed a null pointer exception in UserState bug:10696723 Change-Id: Id0a67846093fca5d4c1e10843eaf6aa90169d942
/frameworks/base/services/java/com/android/server/print/RemotePrintService.java
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cc65b0c325b88c466763712f76148a6f5b8a5b3f |
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11-Sep-2013 |
Svetoslav <svetoslavganov@google.com> |
Not change the print options on printer change if possible. If the user selects some print options from the dialog and then changes the printer to one that has the same capabilities the selections in the UI should not change. bug:10631856 Change-Id: Ia76ce58c446815e3498d2f4b4739dee62d11d96a
/frameworks/base/services/java/com/android/server/print/RemotePrintService.java
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c6066799ad130140159230d14451b429eb828755 |
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11-Sep-2013 |
Svetoslav <svetoslavganov@google.com> |
Handle print serivce crashes. 1. Now after a print service crashes we are bringing it to the same state of its lifecycle. For example, if a service does a discovery and crashes we recreate the discovery session call the start discovery method and so on. 2. Turned off debugging logs since we have fully fledged state dump. bug:10697779 Change-Id: Id790537461428e96b197eef12258996bda2bd1ce
/frameworks/base/services/java/com/android/server/print/RemotePrintService.java
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b669917825a49421ee79be4819ead765f5de8aae |
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08-Sep-2013 |
Svetoslav Ganov <svetoslavganov@google.com> |
Add dumping the state of the print sub-system. Being able to dump the state of the print sub-system especially when taking a bugreport is very useful for bug fixing and observing whether the print system operates properly. bug:10659019 Change-Id: Id098b788f474ab17766966a4563ffdfc0171c76b
/frameworks/base/services/java/com/android/server/print/RemotePrintService.java
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773f54de3de9bce7b6f915aa47ed686b161d77aa |
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03-Sep-2013 |
Svetoslav <svetoslavganov@google.com> |
Print API updated. 1. Removed the updatePrinters API on PrinterDiscoverySession. Now re-adding a printer updates it. 2. Added getTrackedPrinters() API to allow a print service to figure out which printers' state should be tracked by the service. 3. Removed the APIs on PrintDocumentInfo that describe the layout of the content as they are not needed. For example, if the print attributes passed in layout require landscape mode, the the app should just create a PDF page with the wider side up and draw its content in portrait. The printer will then rotate the page. Change-Id: Idd72c6e9c129e8b17eef1236573a99773f8ff0a2
/frameworks/base/services/java/com/android/server/print/RemotePrintService.java
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9186d0cb2bd325d9b52da15dbd513937c1e42caa |
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03-Sep-2013 |
Svetoslav Ganov <svetoslavganov@google.com> |
Bug fixes in the printer dialog activity and fused printer loader. 1. Fused printers loader was not using the discovered printers to update the historical ones. Now if a historical printer is discovered we update its state with the discovered, i.e. most recent, information. 2. Fixed a bug in the destination adapter of the print job config dialog that was leading to a crash if all printers item is selected when there are no discovered printers. 3. Updated the add printers asset in the all printers screen. 4. Historical printers were not persisted by the print dialog activity. 5. Reduced the number of printers we send per transation to avoid the binder transaction size limit. Added sending of printers in chunks in a place this was missing. Change-Id: I88b54888360bc0e53b06bd260c2b832d0d6454b6
/frameworks/base/services/java/com/android/server/print/RemotePrintService.java
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d26d4898fcc9b78f4b66118895c375384098205e |
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28-Aug-2013 |
Svetoslav Ganov <svetoslavganov@google.com> |
Print spooler security and some new print service facing APIs. 1. Updated the security mode of the print spooler. Now the spooler is not signed with the system key, it is not a privileged app so if it gets compromised (PDF rendering is a potential attack vector) it cannot access dangerous permissions. Also only the system can bind to the spooler. 2. Added APIs for asking a print service to start and stop tracking a given printer. This is need for the case when the user selects the printer and the print service should do a best effort to keep the system updated for the current state of the printer. 3. Added APIs for putting a print job in a blocked state. A print service would report the print job as blocked if for some reason the printer cannot proceed, e.g. 99 pages are printed but there is no paper for the last one. The user has to add more paper and the print service can resume the job. 4. Changed the read/write APIs to use ParcelFileDescriptor instead of FileDescriptor since the latter does not have a clean API for detaching the wrapped Linux file descriptor when one wants to push it to native. 5. Added API for getting the size of the printed document so the print service can avoid handling big filed over cellular network or ask the user if needed. 6. Now the print services that are preinstalled on the system image are automatically enabled. Change-Id: Ia06c311d3d21cabb9e1368f13928e11cd0030918
/frameworks/base/services/java/com/android/server/print/RemotePrintService.java
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44720af55a8fdf991929983dad5d53c02851dd1e |
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21-Aug-2013 |
Svetoslav Ganov <svetoslavganov@google.com> |
Print UI bug fixing and printer discovery refactoring. 1. Added support for selecting a printer from the all printers activity that is not in the initial printer selection drop down. The user initially sees a sub set of the printers in the drop down and the last option is to see all printers in a separate activity. Some of the printers in the all printers activity are not shown in the initial drop down. 2. Refactored printer discovery by adding (private for now) printer discovery app facing APIs. These APIs are needed to support multiple printer selection activities (print dialog and all printers activities) and also the settings for showing all printers for a service. Now multiple apps can request observing for printers and there is a centralized mediator that ensures the same printer discovery session is used. The mediator dispatches printer discovery specific requests to print services. It also aggregates discovered printers and delivers them to the interested apps. The mediator minimizes printer discovery session creation and starting and stopping discovery by sharing the same discovery session and discovery window with multiple apps. Lastly, the mediator takes care of print services enabled during discovery by bringing them up to the current discovery state (create discovery session and start discovery if needed). The mediator also reports disappearing of the printers of a service removed during discovery and notifies a newly registered observers for the currnet printers if the observers are added during an active printer discovery session. 3. Fixed bugs in the print UI and implemented some UX tweaks. Change-Id: I4d0b0c5a6c6f1809b2ba5dbc8e9d63ab3d48f1ef
/frameworks/base/services/java/com/android/server/print/RemotePrintService.java
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269403b032f965ff3847eb982c2f697229dc5a92 |
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15-Aug-2013 |
Svetoslav <svetoslavganov@google.com> |
Implemented advanced printer selection and API refactoring. 1. Added past printer history tracking and merging favorite printers with discovered printers. 2. Added save as PDF support. 3. Added all printers activity with search capability and optional add printers chooser (if any print service provides add printers activity) 4. Refactored the printer discovery session APIs. Now one session can have multiple window discovery windows and the session stores the printers found during past discovery periods. 5. Merged the print spooler and the print spooler service - much simpler and easier to maintain. Change-Id: I4830b0eb6367e1c748b768a5ea9ea11baf36cfad
/frameworks/base/services/java/com/android/server/print/RemotePrintService.java
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66160bb881470a691005c8ad4e9c31c41fd5f810 |
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13-Aug-2013 |
Svetoslav <svetoslavganov@google.com> |
Partial implementation for the favorite and available printer tracking. 1. Added a dedicated class that keeps track of the user's favorite printers based on past usage. We keep the last 50 uses and assign a decreasing weight to older historical use records. The printer whose records' sum is the largest is considered the favorite for the user and so on. 2. Factored out the printer discovery logic from the print job config activity into a separate available printers provider class. It encapsulates all the logic to communicated with the remote print services to discover printers, keep track of added, updated, and removed printers. 3. Preliminary scetch of the printer chooser acitivty that will show all the printers. Change-Id: I5524665f2a9a565f186db85214d5e41a44f4812e
/frameworks/base/services/java/com/android/server/print/RemotePrintService.java
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798bed6cc7d273e72b0253288605db9cd2b57740 |
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11-Aug-2013 |
Svetoslav Ganov <svetoslavganov@google.com> |
Refinement of the print service APIs. 1. Factored out the printer discovery APIs of a print service in a dedicated session object that is created by the print service on demand. This ensures that added/removed/updated printers from one session do not interfere with another session. 2. Updated the app facing APIs to pass in a document info along with a printed file. Also exposed the print file adapter so apps that create a temporary file for printing can intercept when it is read by the system so the file can be deleted. 3. Updated the print service documentation. Change-Id: I3473d586c26d8bda1cf7e2bdacb441aa9df982ed
/frameworks/base/services/java/com/android/server/print/RemotePrintService.java
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835835ee6f913408ac91678d6056896a2c5b25e3 |
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05-Aug-2013 |
Svetoslav Ganov <svetoslavganov@google.com> |
Polish the print spooler loading of stored print jobs. 1. The singleton print spooler isntance is created when the print spooler service gets a connection to the system and is destroyed when this connection is removed. Note that if the spooler has work, then the connection to the system will not be removed. When the spooler is created, it reads the stored state and notifies the system which in turn dispatches this to the print services. When the system connects to the spooler and passes it a connection, we schedule a delayed check whether there is work for the spooler. We do not handle this immediately to avoid intermitted spinning on and off of the spooler process if a client makes a sequence of queries while the spooler has really no work. 2. Fixed a bug in the NotificationManagerService where adding a notification and removing it immediately after that does not remove the notification. The code that is adding a notification is run on a handler thread while the code to remove it on the calling thread. This creates a race and erroneous results. Now the removal is also scheduled on the handler. 3. Many small fixes here and there. Change-Id: I6415c253139fa6616393fbe23c659d031a29e1f6
/frameworks/base/services/java/com/android/server/print/RemotePrintService.java
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8c43376ea83a67414bd6823a472b76d41160239e |
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02-Aug-2013 |
Svetoslav Ganov <svetoslavganov@google.com> |
First cut of the print notifications. 1. Added notifications for a queued print job, for a started print job, for ongoing canceling a print job, and for a failed print job. The notifications for queued and started state have a cancel action. The notification for failed print job has a cancel and a restart action. 2. Propagating failure message from the print service to the notifications. 3. PrintJobConfigActivity was not setting the initial value for the print job copies and was not updating the UI immediately after creation. 4. Refactored PrintJobConfigActivity to avoid using the hack to avoid reaction for item selection change in a spinner for an event that happened before the callback was registered. 5. Removed the label attribute from PrinterInfo and now PrinterId is composed of the printer name and the service component name. This is nice since for restarting print jobs we do not need to store information about the printer except the printer id which is already part of the PrintJobInfo's data. Also the printer name is not expected to change anyway. 6. Allowing cancellation of a queued print job. Also no print job is cancelled without asking the managing print service to do that. Before we were immediately canceling print jobs in queued state but it was possible for a buggy print service to not set the print job state to started before starting to do expensive work that will not be canceled. 7. PrintServiceInfo was throwing an exception the the meta-data XML for the print service was not well-formed which would crash the system process. Now we just ignore not well-formed meta-data. 8. Removed unused permissions from the PrintSpooler's manifest. Change-Id: Iba2dd14b487f56e137b90d1da17c3033422ab5e6
/frameworks/base/services/java/com/android/server/print/RemotePrintService.java
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55b409a97cf6376399a0940313ea852368727d6f |
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01-Aug-2013 |
Svetoslav Ganov <svetoslavganov@google.com> |
Iteration of the print sub-system. 1. Added APIs for adding partially initialized PrintInfo objects enabling light-weight lookps for print serivces that want to populate the list of available printers without querying each of them for its capabilities. This includes APIs for the system to request from a print service to update certain printers. 2. Fixed a bug in PrinterId#equals(). 3. Added equals and hasCode implementaion to PrinterInfo. Also the defaul in PrinterInfo are now an array instead of a SparseArray - cheaper. 4. Now PrintJobConfigActivity works with partially specified printers. Specifically, if such a printer is selected the activity is requesting from the print service to update the printer. We are currently not handling the timeout case. It also handles udpated pritners. Change-Id: I5e83e924ef597c9e22cbd06a971d4f4d3bd3a9c1
/frameworks/base/services/java/com/android/server/print/RemotePrintService.java
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85b1f883056a1d74473fd9ce774948878f389ab6 |
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25-Jul-2013 |
Svetoslav Ganov <svetoslavganov@google.com> |
Iteration on the print sub-system. 1. API changes: Moved copies API from PrintAttributes to PrintJobInfo; Changed the PageRange list to an array in PrintDocumentAdapter#onWrite; Added onCancelled method to the layout and write callbacks. 2. Refactored the serialization of remote layout and write commands. Now the commands are serialized by the code in the client instead in the spooler. The benefit is simple code since the client has to do a serialization to delegate to the main thread anyway. The increased IPC found is fine since these calls are quite unfrequent. 3. Removed an unused file: IPrintSpoolerObserver.aidl 4. Added equals and hasCode implementation to PageRange, PrintAttributes, MediaSize, Resolution, Margins, Tray, PrintDocumentInfo. 5. Added shortcut path for query APIs on PrintJob that return cached values if the print job is in a uncuttable state, i.e. completed or cancelled. Failed print jobs can be restarted. 6. PrintJobInfo was not properly serialized. 7. Updated the look of the print dialog to be stable if there is and there isn't currently selected printer. 8. PrintJobCOnfigActivity now calls onLayout on every print attributes change but requests a write only on print preview or print button press. Also if the layout did not change the content and it is already written no subsequent call is made. Also if the selected pages change and we already have them no subsequent call to write is made. Also the app is called with print preview attribute set when performing layout and with it cleared after the print button is pressed. A lot of changes making sure that only valid actions are enabled in the activity (looks like a dialog) at a given time frame. The print job config activity is also hidden after we got all the data, i.e. layout and write are done. 9. The callback from the print spooler to the system are scheduled via messages to avoid lock being held during the call. It was hard to guarantee that since a method holding a lock may be calling one that would like to release the lock at some point to make the callbacks. 10. Print spooler state is persisted only if something changes in a completed print job, i.e. not one that is being constructed due the print job config dialog. 11. Fixed a potential race in the RemotePrintSpooler where it was possible that a client that got a handle to the remote spooler calls into an unbound spooler. E.g: the client gets the remote interface with a lock held, now the client releases the lock to avoid IPC with a lock, during the IPC scheduling the spooler has notified the system that it is done and the system unbinds from it, now the client's IPC is made to a spooler that is disconnected. Change-Id: Ie9c42255940a27ecaed21a4d326a663a4788ac9d
/frameworks/base/services/java/com/android/server/print/RemotePrintService.java
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88d199130d44c6bacb383a7757e782cf97483c68 |
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22-Jul-2013 |
Svetoslav Ganov <svetoslavganov@google.com> |
Implement persistence/restoring of print spooler state. 1. Implemented the persistence and restoring of the print spooler state. The print spooler state is saved as an XML on every print job change and is restored when we bind to the spooler. The system does not unbind from the spooler until the state persistence completes. We are now storing the entire state, i.e. all print jobs, when a single one changes. This is not optimal but we are not expecting to have many such at the same time, so for now we err for simplicity of implementation. 2. Enforcing a non-empty print job name. 3. Hidden the STATE_CREATED print job state which should never be visible to a client since this is the state of a print job during construction, i.e. the print dialog is up and we are doing back and forth with the app. 4. Fixed some PrintAttributes APIs that were incorrectly taking in a PackageManager instance. 5. Updated the PrintSpooler build file due to splitting the framework into multiple jars. Change-Id: I52c88eaa1ec9c64920359cc143c79832a4c3d25b
/frameworks/base/services/java/com/android/server/print/RemotePrintService.java
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a00271533f639c8ed36429c663889ac9f654bc72 |
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25-Jun-2013 |
Svetoslav Ganov <svetoslavganov@google.com> |
Refactoring of the print sub-system and API clean up. 1. Now a user state has ins own spooler since the spooler app is running per user. The user state registers an observer for the state of the spooler to get information needed to orchestrate unbinding from print serivces that have no work and eventually unbinding from the spooler when all no service has any work. 2. Abstracted a remote print service from the perspective of the system in a class that is transparently managing binding and unbinding to the remote instance. 3. Abstracted the remote print spooler to transparently manage binding and unbinding to the remote instance when there is work and when there is no work, respectively. 4. Cleaned up the print document adapter (ex-PrintAdapter) APIs to enable implementing the all callbacks on a thread of choice. If the document is really small, using the main thread makes sense. Now if an app that does not need the UI state to layout the printed content, it can schedule all the work for allocating resources, laying out, writing, and releasing resources on a dedicated thread. 5. Added info class for the printed document that is now propagated the the print services. A print service gets an instance of a new document class that encapsulates the document info and a method to access the document's data. 6. Added APIs for describing the type of a document to the new document info class. This allows a print service to do smarts based on the doc type. For now we have only photo and document types. 7. Renamed the systemReady method for system services that implement it with different semantics to systemRunning. Such methods assume the the service can run third-party code which is not the same as systemReady. 8. Cleaned up the print job configuration activity. 9. Sigh... code clean up here and there. Factoring out classes to improve readability. Change-Id: I637ba28412793166cbf519273fdf022241159a92
/frameworks/base/services/java/com/android/server/print/RemotePrintService.java
|