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FlatpakTransaction

FlatpakTransaction — Transaction information

Functions

Properties

FlatpakInstallation * installation Read / Write / Construct Only

Signals

Types and Values

Object Hierarchy

    GObject
    ╰── FlatpakTransaction

Implemented Interfaces

FlatpakTransaction implements GInitable.

Description

FlatpakTransaction is an object representing an install/update/uninstall transaction. You create an object like this using flatpak_transaction_new_for_installation() and then you add all the operations (installs, updates, etc) you wish to do. Then you start the transaction with flatpak_transaction_run() which will resolve all kinds of dependencies and report progress and status while downloading and installing these.

The dependency resolution that is the first step of executing a transaction can be influenced by flatpak_transaction_set_disable_dependencies(), flatpak_transaction_set_disable_related(), flatpak_transaction_add_dependency_source() and flatpak_transaction_add_default_dependency_sources().

The underlying operations that get orchestrated by a FlatpakTransaction are: pulling new data from remote repositories, deploying newer applications or runtimes and pruning old deployments. Which of these operations are carried out can be controlled with flatpak_transaction_set_no_pull(), flatpak_transaction_set_no_deploy() and flatpak_transaction_set_disable_prune().

A transaction is a blocking operation, and all signals are emitted in the same thread. This means you should either handle the signals directly (say, by doing blocking console interaction, or by just returning without interaction), or run the operation in a separate thread and do your own forwarding to the GUI thread.

Despite the name, a FlatpakTransaction is more like a batch operation than a transaction in the database sense. Individual operations are carried out sequentially, and are atomic. They become visible to the system as they are completed. When an error occurs, already completed operations are not rolled back.

For each operation that is executed during a transaction, you first get a “new-operation” signal, followed by either a “operation-done” or “operation-error”.

The FlatpakTransaction API is threadsafe in the sense that it is safe to run two transactions at the same time, in different threads (or processes).

Note: Transactions (or any other install/update operation) to a system installation rely on the ability to create files that are readable by other users. Some users set a umask that prohibits this. Unfortunately there is no good way to work around this in a threadsafe, local way, so such setups will break by default. The flatpak commandline app works around this by calling umask(022) in the early setup, and it is recommended that other apps using libflatpak do this too.

Functions

flatpak_transaction_new_for_installation ()

FlatpakTransaction *
flatpak_transaction_new_for_installation
                               (FlatpakInstallation *installation,
                                GCancellable *cancellable,
                                GError **error);

Creates a new FlatpakTransaction object that can be used to do installation and updates of multiple refs, as well as their dependencies, in a single operation. Set the options you want on the transaction and add the refs you want to install/update, then start the transaction with flatpak_transaction_run().

Parameters

installation

a FlatpakInstallation

 

cancellable

a GCancellable.

[nullable]

error

return location for a GError

 

Returns

a FlatpakTransaction, or NULL on failure.

[transfer full]


flatpak_transaction_add_install ()

gboolean
flatpak_transaction_add_install (FlatpakTransaction *self,
                                 const char *remote,
                                 const char *ref,
                                 const char **subpaths,
                                 GError **error);

Adds installing the given ref to this transaction.

The remote can either be a configured remote of the installation, or a file:// uri pointing at a local repository to install from, in which case an origin remote is created.

Parameters

self

a FlatpakTransaction

 

remote

the name of the remote

 

ref

the ref

 

subpaths

subpaths to install, or the empty list or NULL to pull all subpaths.

[nullable][array zero-terminated=1]

error

return location for a GError

 

Returns

TRUE on success; FALSE with error set on failure.


flatpak_transaction_add_install_bundle ()

gboolean
flatpak_transaction_add_install_bundle
                               (FlatpakTransaction *self,
                                GFile *file,
                                GBytes *gpg_data,
                                GError **error);

Adds installing the given bundle to this transaction.

Parameters

self

a FlatpakTransaction

 

file

a GFile that is an flatpak bundle

 

gpg_data

GPG key with which to check bundle signatures, or NULL to use the key embedded in the bundle (if any).

[nullable]

error

return location for a GError

 

Returns

TRUE on success; FALSE with error set on failure.


flatpak_transaction_add_install_flatpakref ()

gboolean
flatpak_transaction_add_install_flatpakref
                               (FlatpakTransaction *self,
                                GBytes *flatpakref_data,
                                GError **error);

Adds installing the given flatpakref to this transaction.

Parameters

self

a FlatpakTransaction

 

flatpakref_data

data from a flatpakref file

 

error

return location for a GError

 

Returns

TRUE on success; FALSE with error set on failure.


flatpak_transaction_add_rebase ()

gboolean
flatpak_transaction_add_rebase (FlatpakTransaction *self,
                                const char *remote,
                                const char *ref,
                                const char **subpaths,
                                const char **previous_ids,
                                GError **error);

Adds updating the previous_ids of the given ref to this transaction, via either installing the ref if it was not already present or updating it. This will treat ref as the result of following an eol-rebase, and data migration from the refs in previous_ids will be set up.

See flatpak_transaction_add_install() for a description of remote .

Parameters

self

a FlatpakTransaction

 

remote

the name of the remote

 

ref

the ref

 

subpaths

the subpaths to include, or NULL to install the complete ref.

[nullable]

previous_ids

Previous ids to add to the given ref. These should simply be the ids, not the full ref names (e.g. org.foo.Bar, not org.foo.Bar/x86_64/master).

[nullable][array zero-terminated=1]

error

return location for a GError

 

Returns

TRUE on success; FALSE with error set on failure.

Since: 1.3.3.


flatpak_transaction_add_update ()

gboolean
flatpak_transaction_add_update (FlatpakTransaction *self,
                                const char *ref,
                                const char **subpaths,
                                const char *commit,
                                GError **error);

Adds updating the given ref to this transaction.

Parameters

self

a FlatpakTransaction

 

ref

the ref

 

subpaths

subpaths to install; NULL to use the current set plus the set of configured languages, or { NULL } or { "", NULL } to pull all subpaths.

[nullable][array zero-terminated=1]

commit

the commit to update to, or NULL to use the latest.

[nullable]

error

return location for a GError

 

Returns

TRUE on success; FALSE with error set on failure.


flatpak_transaction_add_uninstall ()

gboolean
flatpak_transaction_add_uninstall (FlatpakTransaction *self,
                                   const char *ref,
                                   GError **error);

Adds uninstalling the given ref to this transaction.

Parameters

self

a FlatpakTransaction

 

ref

the ref

 

error

return location for a GError

 

Returns

TRUE on success; FALSE with error set on failure.


flatpak_transaction_add_default_dependency_sources ()

void
flatpak_transaction_add_default_dependency_sources
                               (FlatpakTransaction *self);

Similar to flatpak_transaction_add_dependency_source(), but adds all the default installations, which means all the defined system-wide (but not per-user) installations.

Parameters

self

a FlatpakTransaction

 

flatpak_transaction_add_dependency_source ()

void
flatpak_transaction_add_dependency_source
                               (FlatpakTransaction *self,
                                FlatpakInstallation *installation);

Adds an extra installation as a source for application dependencies. This means that applications can be installed in this transaction relying on runtimes from this additional installation (whereas it would normally install required runtimes that are not installed in the installation the transaction works on).

Also see flatpak_transaction_add_default_dependency_sources().

Parameters

self

a FlatpakTransaction

 

installation

a FlatpakInstallation

 

flatpak_transaction_run ()

gboolean
flatpak_transaction_run (FlatpakTransaction *transaction,
                         GCancellable *cancellable,
                         GError **error);

Executes the transaction.

During the course of the execution, various signals will get emitted. The FlatpakTransaction::choose-remote-for-ref and “add-new-remote” signals may get emitted while resolving operations. “ready” is emitted when the transaction has been fully resolved, and “new-operation” and “operation-done” are emitted while the operations are carried out. If an error occurs at any point during the execution, “operation-error” is emitted.

Note that this call blocks until the transaction is done.

Parameters

transaction

a FlatpakTransaction

 

cancellable

a GCancellable.

[nullable]

error

return location for an error

 

Returns

TRUE on success, FALSE if an error occurred


flatpak_transaction_get_current_operation ()

FlatpakTransactionOperation *
flatpak_transaction_get_current_operation
                               (FlatpakTransaction *self);

Gets the current operation.

Parameters

self

a FlatpakTransaction

 

Returns

the current FlatpakTransactionOperation.

[transfer full]


flatpak_transaction_get_installation ()

FlatpakInstallation *
flatpak_transaction_get_installation (FlatpakTransaction *self);

Gets the installation this transaction was created for.

Parameters

Returns

a FlatpakInstallation.

[transfer full]


flatpak_transaction_get_operations ()

GList *
flatpak_transaction_get_operations (FlatpakTransaction *self);

Gets the list of operations. Skipped operations are not included. The order of the list is the order in which the operations are executed.

Parameters

self

a FlatpakTransaction

 

Returns

a GList of operations.

[transfer full][element-type FlatpakTransactionOperation]


flatpak_transaction_is_empty ()

gboolean
flatpak_transaction_is_empty (FlatpakTransaction *self);

Returns whether the transaction contains any non-skipped operations.

Parameters

self

a FlatpakTransaction

 

Returns

TRUE if the transaction is empty


flatpak_transaction_set_disable_dependencies ()

void
flatpak_transaction_set_disable_dependencies
                               (FlatpakTransaction *self,
                                gboolean disable_dependencies);

Sets whether the transaction should ignore runtime dependencies when resolving operations for applications.

Parameters

self

a FlatpakTransaction

 

disable_dependencies

whether to disable runtime dependencies

 

flatpak_transaction_set_disable_prune ()

void
flatpak_transaction_set_disable_prune (FlatpakTransaction *self,
                                       gboolean disable_prune);

Sets whether the transaction should avoid pruning the local OSTree repository after updating.

Parameters

self

a FlatpakTransaction

 

disable_prune

whether to avoid pruning

 

flatpak_transaction_set_disable_related ()

void
flatpak_transaction_set_disable_related
                               (FlatpakTransaction *self,
                                gboolean disable_related);

Sets whether the transaction should avoid adding related refs when resolving operations. Related refs are extensions that are suggested by apps, such as locales.

Parameters

self

a FlatpakTransaction

 

disable_related

whether to avoid adding related refs

 

flatpak_transaction_set_disable_static_deltas ()

void
flatpak_transaction_set_disable_static_deltas
                               (FlatpakTransaction *self,
                                gboolean disable_static_deltas);

Sets whether the transaction should avoid using static deltas when pulling.

Parameters

self

a FlatpakTransaction

 

disable_static_deltas

whether to avoid static deltas

 

flatpak_transaction_set_no_deploy ()

void
flatpak_transaction_set_no_deploy (FlatpakTransaction *self,
                                   gboolean no_deploy);

Sets whether the transaction should download updates, but not deploy them.

Parameters

self

a FlatpakTransaction

 

no_deploy

whether to avoid deploying

 

flatpak_transaction_get_no_deploy ()

gboolean
flatpak_transaction_get_no_deploy (FlatpakTransaction *self);

Gets whether the transaction is only downloading updates, and not deploying them.

Parameters

self

a FlatpakTransaction

 

Returns

TRUE if no_deploy is set, FALSE otherwise

Since: 1.5.1


flatpak_transaction_set_no_pull ()

void
flatpak_transaction_set_no_pull (FlatpakTransaction *self,
                                 gboolean no_pull);

Sets whether the transaction should operate only on locally available data.

Parameters

self

a FlatpakTransaction

 

no_pull

whether to avoid pulls

 

flatpak_transaction_get_no_pull ()

gboolean
flatpak_transaction_get_no_pull (FlatpakTransaction *self);

Gets whether the transaction should operate only on locally available data.

Parameters

self

a FlatpakTransaction

 

Returns

TRUE if no_pull is set, FALSE otherwise

Since: 1.5.1


flatpak_transaction_set_reinstall ()

void
flatpak_transaction_set_reinstall (FlatpakTransaction *self,
                                   gboolean reinstall);

Sets whether the transaction should uninstall first if a ref is already installed.

Parameters

self

a FlatpakTransaction

 

reinstall

whether to reinstall refs

 

flatpak_transaction_set_force_uninstall ()

void
flatpak_transaction_set_force_uninstall
                               (FlatpakTransaction *self,
                                gboolean force_uninstall);

Sets whether the transaction should uninstall files even if they're used by a running application.

Parameters

self

a FlatpakTransaction

 

force_uninstall

whether to force-uninstall refs

 

flatpak_transaction_set_default_arch ()

void
flatpak_transaction_set_default_arch (FlatpakTransaction *self,
                                      const char *arch);

Sets the architecture to default to where it is unspecified.

Parameters

self

a FlatpakTransaction

 

arch

the arch to make default

 

flatpak_transaction_set_parent_window ()

void
flatpak_transaction_set_parent_window (FlatpakTransaction *self,
                                       const char *parent_window);

Sets the parent window (if any) to use for any UI show by this transaction. This is used by authenticators if they need to interact with the user during authentication.

The format of this string depends on the display system in use, and is the same as used by xdg-desktop-portal.

On X11 it should be of the form x11:$xid where $xid is the hex version of the xwindows id.

On wayland is should be wayland:$handle where handle is gotten by using the export call of the xdg-foreign-unstable wayland extension.

Parameters

self

a FlatpakTransaction

 

parent_window

whether to avoid pulls

 

Since: 1.5.1


flatpak_transaction_get_parent_window ()

const char *
flatpak_transaction_get_parent_window (FlatpakTransaction *self);

Gets the parent window set for this transaction, or NULL if unset. See flatpak_transaction_get_parent_window().

Parameters

self

a FlatpakTransaction

 

Returns

a window name, or NULL.

[transfer none]

Since: 1.5.1


flatpak_transaction_abort_webflow ()

void
flatpak_transaction_abort_webflow (FlatpakTransaction *self,
                                   guint id);

Cancel an ongoing webflow authentication request. This can be call in the time between “webflow-start” returned TRUE, and “webflow-done” is emitted. It will cancel the ongoing authentication operation.

This is useful for example if you're showing an authenticaion window with a browser, but the user closed it before it was finished.

Parameters

self

a FlatpakTransaction

 

id

The webflow id, as passed into the webflow-start signal

 

Since: 1.5.1

Types and Values

FlatpakTransaction

typedef struct _FlatpakTransaction FlatpakTransaction;

enum FlatpakTransactionOperationType

The type of a FlatpakTransactionOperation.

Members

FLATPAK_TRANSACTION_OPERATION_INSTALL

Install a ref from a remote

 

FLATPAK_TRANSACTION_OPERATION_UPDATE

Update an installed ref

 

FLATPAK_TRANSACTION_OPERATION_INSTALL_BUNDLE

Install a bundle from a file

 

FLATPAK_TRANSACTION_OPERATION_UNINSTALL

Uninstall a ref

 

FLATPAK_TRANSACTION_OPERATION_LAST_TYPE

The (currently) last operation type

 

enum FlatpakTransactionErrorDetails

The details for “operation-error”.

Members

FLATPAK_TRANSACTION_ERROR_DETAILS_NON_FATAL

The operation failure was not fatal

 

enum FlatpakTransactionRemoteReason

The reason for “add-new-remote”.

Members

FLATPAK_TRANSACTION_REMOTE_GENERIC_REPO

The remote specified in the flatpakref has other apps too

 

FLATPAK_TRANSACTION_REMOTE_RUNTIME_DEPS

The remote has runtimes needed for the app

 

enum FlatpakTransactionResult

The details for “operation-done”.

Members

FLATPAK_TRANSACTION_RESULT_NO_CHANGE

The update caused no changes

 

Property Details

The “installation” property

  “installation”             FlatpakInstallation *

The installation that the transaction operates on.

Owner: FlatpakTransaction

Flags: Read / Write / Construct Only

Signal Details

The “add-new-remote” signal

gboolean
user_function (FlatpakTransaction *object,
               int                 reason,
               char               *from_id,
               char               *suggested_remote_name,
               char               *url,
               gpointer            user_data)

The ::add-new-remote signal gets emitted if, as part of the transaction, it is required or recommended that a new remote is added, for the reason described in reason .

Parameters

object

A FlatpakTransaction

 

reason

A FlatpakTransactionRemoteReason for this suggestion.

[type FlatpakTransactionRemoteReason]

from_id

The id of the app/runtime

 

suggested_remote_name

The suggested remote name

 

url

The repo url

 

user_data

user data set when the signal handler was connected.

 

Returns

TRUE to add the remote

Flags: Run Last


The “basic-auth-start” signal

gboolean
user_function (FlatpakTransaction *object,
               char               *remote,
               char               *realm,
               GVariant           *options,
               int                 id,
               gpointer            user_data)

The ::basic-auth-start signal gets emitted when a basic user/password authentication is needed during the operation. If the caller handles this it should ask the user for the user and password and return TRUE. Once the information is gathered call flatpak_transaction_complete_basic_auth() with it.

If the client does not support basic auth then return FALSE from this signal (or don't implement it). This will abort the authentication and likely result in the transaction failing (unless the authentication was somehow optional).

Parameters

object

A FlatpakTransaction

 

remote

The remote we're authenticating with

 

realm

The url to show

 

options

Extra options, currently unused

 

id

The id of the operation, can be used to finish it

 

user_data

user data set when the signal handler was connected.

 

Flags: Run Last

Since: 1.5.2


The “choose-remote-for-ref” signal

int
user_function (FlatpakTransaction *object,
               char               *for_ref,
               char               *runtime_ref,
               GStrv               remotes,
               gpointer            user_data)

The ::choose-remote-for-ref signal gets emitted when a remote needs to be selected during the execution of the transaction.

Parameters

object

A FlatpakTransaction

 

for_ref

The ref we are installing

 

runtime_ref

The ref we are looking for

 

remotes

the remotes that has the ref, sorted in prio order

 

user_data

user data set when the signal handler was connected.

 

Returns

the index of the remote to use, or -1 to not pick one (and fail)

Flags: Run Last


The “end-of-lifed” signal

void
user_function (FlatpakTransaction *object,
               char               *ref,
               char               *reason,
               char               *rebase,
               gpointer            user_data)

The ::end-of-lifed signal gets emitted when a ref is found to be marked as end-of-life during the execution of the transaction.

Parameters

object

A FlatpakTransaction

 

ref

The ref we are installing

 

reason

The eol reason, or NULL

 

rebase

The new name, if rebased, or NULL

 

user_data

user data set when the signal handler was connected.

 

Flags: Run Last


The “end-of-lifed-with-rebase” signal

gboolean
user_function (FlatpakTransaction *object,
               char               *remote,
               char               *ref,
               char               *reason,
               char               *rebased_to_ref,
               GStrv               previous_ids,
               gpointer            user_data)

The ::end-of-lifed-with-rebase signal gets emitted when a ref is found to be marked as end-of-life before the transaction begins. Unlike “end-of-lifed”, this signal allows for the transaction to be modified in order to e.g. install the rebased ref.

If the caller wants to install the rebased ref, they should call flatpak_transaction_add_uninstall() on ref , flatpak_transaction_add_rebase() on rebased_to_ref , and return TRUE. Otherwise FALSE may be returned.

Parameters

object

A FlatpakTransaction

 

remote

The remote for the ref we are processing

 

ref

The ref we are processing

 

reason

The eol reason, or NULL

 

rebased_to_ref

The new name, if rebased, or NULL

 

previous_ids

The previous names for the rebased ref (if any), including the one from ref

 

user_data

user data set when the signal handler was connected.

 

Returns

TRUE if the operation on this end-of-lifed ref should be skipped (e.g. because the rebased ref has been added to the transaction), FALSE if it should remain.

Flags: Run Last


The “install-authenticator” signal

void
user_function (FlatpakTransaction *object,
               char               *remote,
               char               *authenticator_ref,
               gpointer            user_data)

The ::install-authenticator signal gets emitted if, as part of resolving the transaction, we need to use an authenticator, but the authentication is not installed, but is available to be installed from the ref.

The application can handle this signal, and if so create another transaction to install the authenticator.

The default handler does nothing, and if the authenticator is not installed when the signal handler fails the transaction will error out.

Parameters

object

A FlatpakTransaction

 

remote

The remote name

 

authenticator_ref

The ref for the authenticator

 

user_data

user data set when the signal handler was connected.

 

Flags: Run Last

Since: 1.7.4


The “new-operation” signal

void
user_function (FlatpakTransaction          *object,
               FlatpakTransactionOperation *operation,
               FlatpakTransactionProgress  *progress,
               gpointer                     user_data)

The ::new-operation signal gets emitted during the execution of the transaction when a new operation is beginning.

Parameters

object

A FlatpakTransaction

 

operation

The new FlatpakTransactionOperation

 

progress

A FlatpakTransactionProgress for operation

 

user_data

user data set when the signal handler was connected.

 

Flags: Run Last


The “operation-done” signal

void
user_function (FlatpakTransaction          *object,
               FlatpakTransactionOperation *operation,
               char                        *commit,
               int                          result,
               gpointer                     user_data)

The ::operation-done signal gets emitted during the execution of the transaction when an operation is finished.

Parameters

object

A FlatpakTransaction

 

operation

The FlatpakTransactionOperation which finished

 

commit

The commit.

[nullable]

result

A FlatpakTransactionResult giving details about the result.

[type FlatpakTransactionResult]

user_data

user data set when the signal handler was connected.

 

Flags: Run Last


The “operation-error” signal

gboolean
user_function (FlatpakTransaction          *object,
               FlatpakTransactionOperation *operation,
               GError                      *error,
               int                          details,
               gpointer                     user_data)

The ::operation-error signal gets emitted when an error occurs during the execution of the transaction.

Parameters

object

A FlatpakTransaction

 

operation

The FlatpakTransactionOperation which failed

 

error

A GError

 

details

A FlatpakTransactionErrorDetails with details about the error.

[type FlatpakTransactionErrorDetails]

user_data

user data set when the signal handler was connected.

 

Returns

the TRUE to contine transaction, FALSE to stop

Flags: Run Last


The “ready” signal

gboolean
user_function (FlatpakTransaction *object,
               gpointer            user_data)

The ::ready signal is emitted when all the refs involved in the operation have been resolved to commits, and the required authentication for all ops is gotten. At this point flatpak_transaction_get_operations() will return all the operations that will be executed as part of the transaction.

Parameters

object

A FlatpakTransaction

 

user_data

user data set when the signal handler was connected.

 

Returns

TRUE to carry on with the transaction, FALSE to abort

Flags: Run Last


The “ready-pre-auth” signal

gboolean
user_function (FlatpakTransaction *object,
               gpointer            user_data)

The ::ready-pre-auth signal is emitted when all the refs involved in the transaction have been resolved to commits, but we might not necessarily have asked for authenticaion for all their required operations. This is very similar to the ::ready signal, and you can chose which one (or both) to use depending on how you want to handle authentication in your user interface.

At this point flatpak_transaction_get_operations() will return all the operations that will be executed as part of the transaction. You can call flatpak_transaction_operation_get_requires_authentication() to see which will require authentication.

Parameters

object

A FlatpakTransaction

 

user_data

user data set when the signal handler was connected.

 

Returns

TRUE to carry on with the transaction, FALSE to abort

Flags: Run Last


The “webflow-done” signal

void
user_function (FlatpakTransaction *object,
               GVariant           *options,
               int                 id,
               gpointer            user_data)

The ::webflow-done signal gets emitted when the authentication finished the webflow, independent of the reason and results. If you for were showing a web-browser window it can now be closed.

Parameters

object

A FlatpakTransaction

 

options

Extra options, currently unused

 

id

The id of the operation

 

user_data

user data set when the signal handler was connected.

 

Flags: Run Last

Since: 1.5.1


The “webflow-start” signal

gboolean
user_function (FlatpakTransaction *object,
               char               *remote,
               char               *url,
               GVariant           *options,
               int                 id,
               gpointer            user_data)

The ::webflow-start signal gets emitted when some kind of user authentication is needed during the operation. If the caller handles this it should show the url in a webbrowser and return TRUE. This will eventually cause the webbrowser to finish the authentication operation and operation will continue, as signaled by the webflow-done being emitted.

If the client does not support webflow then return FALSE from this signal (or don't implement it). This will abort the authentication and likely result in the transaction failing (unless the authentication was somehow optional).

During the time between webflow-start and webflow-done the client can call flatpak_transaction_abort_webflow() to manually abort the authentication. This is useful if the user aborted the authentication operation some way, like e.g. closing the browser window.

Parameters

object

A FlatpakTransaction

 

remote

The remote we're authenticating with

 

url

The url to show

 

options

Extra options, currently unused

 

id

The id of the operation, can be used to cancel it

 

user_data

user data set when the signal handler was connected.

 

Flags: Run Last

Since: 1.5.1