storage_location_mixin¶
The storage_location_mixin module provides two mixins for managing storage locations
on entities (Projects and Folders):
StorageLocationConfigurable— base mixin providing STS credentials and file migration.ProjectSettingsMixin— extendsStorageLocationConfigurablewith project-level storage settings.
For architecture diagrams and design documentation, see Storage Location Architecture.
Methods Overview¶
StorageLocationConfigurable¶
| Method | Description |
|---|---|
get_sts_storage_token |
Get STS credentials for direct S3 access |
index_files_for_migration |
Index files for migration to a new storage location |
migrate_indexed_files |
Migrate previously indexed files |
ProjectSettingsMixin (extends StorageLocationConfigurable)¶
| Method | Description |
|---|---|
set_storage_location |
Set the upload storage location for this entity (destructive replace) |
get_project_setting |
Get project settings (upload, external_sync, etc.) |
delete_project_setting |
Delete a project setting |
All methods have async equivalents with an _async suffix (e.g. get_sts_storage_token_async).
Migration Workflow¶
Migration is a two-step process:
- Index — call
index_files_for_migrationto scan the entity and record files to migrate in a local SQLite database. - Migrate — call
migrate_indexed_fileswith the database path to perform the actual copy.
index_files_for_migration parameters¶
| Parameter | Default | Description |
|---|---|---|
dest_storage_location_id |
required | Destination storage location ID |
db_path |
None |
Path for the SQLite tracking database; a temp path is used if omitted |
source_storage_location_ids |
None |
Restrict to files in these source locations; None means all locations |
file_version_strategy |
"new" |
"new" / "all" / "latest" / "skip" |
include_table_files |
False |
Whether to include files attached to tables |
continue_on_error |
False |
Record errors and continue rather than raising |
Returns a MigrationResult — access result.db_path to pass to the next step.
migrate_indexed_files parameters¶
| Parameter | Default | Description |
|---|---|---|
db_path |
required | Path returned by index_files_for_migration |
create_table_snapshots |
True |
Create table snapshots before migrating table files |
continue_on_error |
False |
Record errors and continue rather than raising |
force |
False |
Skip the interactive confirmation prompt (required for non-interactive/CI use) |
Returns a MigrationResult, or None if migration was aborted (user declined the prompt,
or the session is non-interactive and force=False).
Usage Examples¶
Set a storage location¶
from synapseclient.models import Folder
# Replace all storage locations on a folder
folder = Folder(id="syn123").get()
folder.set_storage_location(storage_location_id=12345)
# Add a storage location without removing existing ones
setting = folder.get_project_setting(setting_type="upload")
if setting:
setting.locations.append(67890)
setting.store()
Get STS credentials¶
Note: Entity must have an STS-enabled storage location
credentials = folder.get_sts_storage_token(
permission="read_write",
output_format="boto",
)
Migrate files to a new storage location¶
import asyncio
from synapseclient import Synapse
from synapseclient.models import Project
syn = Synapse()
syn.login()
async def main():
project = await Project(id="syn123").get_async()
# Step 1: index
index_result = await project.index_files_for_migration_async(
dest_storage_location_id=12345,
)
print(f"Database path: {index_result.db_path}")
# Step 2: migrate (force=True for non-interactive scripts)
result = await project.migrate_indexed_files_async(
db_path=index_result.db_path,
force=True,
)
print(result.counts_by_status)
asyncio.run(main())
synapseclient.models.mixins.StorageLocationConfigurable
¶
Bases: StorageLocationConfigurableSynchronousProtocol
Mixin for objects that can have their storage location configured.
In order to use this mixin, the class must have an id attribute.
This mixin provides methods for: - Getting STS (AWS Security Token Service) credentials for direct S3 access - Migrating files to a new storage location
Source code in synapseclient/models/mixins/storage_location_mixin.py
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Attributes¶
id
class-attribute
instance-attribute
¶
The unique immutable ID for this entity.
Functions¶
get_sts_storage_token_async
async
¶
get_sts_storage_token_async(permission: str, *, output_format: str = 'json', min_remaining_life: Optional[int] = None, synapse_client: Optional[Synapse] = None) -> Any
Get STS (AWS Security Token Service) credentials for direct access to the storage location backing this entity. These credentials can be used with AWS tools like awscli and boto3. Note: The entity must use a storage location that has STS enabled.
| PARAMETER | DESCRIPTION |
|---|---|
permission
|
The permission level for the token. Must be 'read_only' or 'read_write'.
TYPE:
|
output_format
|
The output format for the credentials. Options: 'json' (default), 'boto', 'shell', 'bash', 'cmd', 'powershell'.
TYPE:
|
min_remaining_life
|
The minimum remaining life (in seconds) for a cached token before a new one is fetched. |
synapse_client
|
If not passed in and caching was not disabled by
|
| RETURNS | DESCRIPTION |
|---|---|
Any
|
The STS credentials in the requested format. |
| RAISES | DESCRIPTION |
|---|---|
ValueError
|
If the entity does not have an id set. |
Using credentials with boto3
Get STS credentials for an STS-enabled folder and use with boto3:
import asyncio
import boto3
from synapseclient import Synapse
from synapseclient.models import Folder
syn = Synapse()
syn.login()
async def main():
folder = await Folder(id="syn123").get_async()
credentials = await folder.get_sts_storage_token_async(
permission="read_write",
output_format="boto",
)
s3_client = boto3.client('s3', **credentials)
asyncio.run(main())
Source code in synapseclient/models/mixins/storage_location_mixin.py
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index_files_for_migration_async
async
¶
index_files_for_migration_async(dest_storage_location_id: int, db_path: Optional[str] = None, *, source_storage_location_ids: Optional[List[int]] = None, file_version_strategy: str = 'new', include_table_files: bool = False, continue_on_error: bool = False, synapse_client: Optional[Synapse] = None) -> MigrationResult
Index files in this entity for migration to a new storage location.
This is the first step in migrating files to a new storage location.
After indexing, use migrate_indexed_files to perform the actual migration.
| PARAMETER | DESCRIPTION |
|---|---|
dest_storage_location_id
|
The destination storage location ID.
TYPE:
|
db_path
|
Path to the SQLite database file for tracking migration state. If not provided, a temporary directory will be used. The path can be retrieved from the returned MigrationResult.db_path. |
source_storage_location_ids
|
Optional list of source storage location IDs to filter which files to migrate. If None, all files are indexed. |
file_version_strategy
|
Strategy for handling file versions. Options: 'new' (default) - create new versions, 'all' - migrate all versions, 'latest' - only migrate latest version, 'skip' - skip if file exists.
TYPE:
|
include_table_files
|
Whether to include files attached to tables.
TYPE:
|
continue_on_error
|
Whether to continue indexing if an error occurs.
TYPE:
|
synapse_client
|
If not passed in and caching was not disabled by
|
| RETURNS | DESCRIPTION |
|---|---|
MigrationResult
|
A MigrationResult object containing indexing statistics and the database |
MigrationResult
|
path (accessible via result.db_path). |
Indexing files for migration
Index files in a project for migration:
import asyncio
from synapseclient import Synapse
from synapseclient.models import Project
syn = Synapse()
syn.login()
async def main():
project = await Project(id="syn123").get_async()
result = await project.index_files_for_migration_async(
dest_storage_location_id=12345,
)
print(f"Database path: {result.db_path}")
print(f"Indexed {result.counts_by_status}")
asyncio.run(main())
Source code in synapseclient/models/mixins/storage_location_mixin.py
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migrate_indexed_files_async
async
¶
migrate_indexed_files_async(db_path: str, *, create_table_snapshots: bool = True, continue_on_error: bool = False, force: bool = False, synapse_client: Optional[Synapse] = None) -> Optional[MigrationResult]
Migrate files that have been indexed with index_files_for_migration.
This is the second step in migrating files to a new storage location.
Files must first be indexed using index_files_for_migration.
Interactive confirmation: When called from an interactive shell and
force=False (the default), this method will print the number of items
queued for migration and prompt for confirmation before proceeding. If
standard output is not connected to an interactive terminal (e.g. a script
or CI environment), migration is aborted unless force=True is set.
| PARAMETER | DESCRIPTION |
|---|---|
db_path
|
Path to the SQLite database file created by
TYPE:
|
create_table_snapshots
|
Whether to create table snapshots before migrating table files.
TYPE:
|
continue_on_error
|
Whether to continue migration if an error occurs.
TYPE:
|
force
|
Skip the interactive confirmation prompt and proceed with
migration automatically. Set to
TYPE:
|
synapse_client
|
If not passed in and caching was not disabled by
|
| RETURNS | DESCRIPTION |
|---|---|
Optional[MigrationResult]
|
A MigrationResult object containing migration statistics, or None |
Optional[MigrationResult]
|
if migration was aborted (user declined the confirmation prompt, or |
Optional[MigrationResult]
|
the session is non-interactive and force=False). |
Migrating indexed files
Migrate previously indexed files:
import asyncio
from synapseclient import Synapse
from synapseclient.models import Project
syn = Synapse()
syn.login()
async def main():
project = await Project(id="syn123").get_async()
# Index first
index_result = await project.index_files_for_migration_async(
dest_storage_location_id=12345,
)
# Then migrate using the db_path from index result
result = await project.migrate_indexed_files_async(
db_path=index_result.db_path,
force=True, # Skip interactive confirmation
)
print(f"Migrated {result.counts_by_status}")
asyncio.run(main())
Source code in synapseclient/models/mixins/storage_location_mixin.py
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synapseclient.models.mixins.ProjectSettingsMixin
¶
Bases: StorageLocationConfigurable
Mixin for objects that can have their project settings configured.
Extends StorageLocationConfigurable with methods for managing project settings such as upload storage locations.
In order to use this mixin, the class must have an id attribute.
Source code in synapseclient/models/mixins/storage_location_mixin.py
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Functions¶
set_storage_location_async
async
¶
set_storage_location_async(storage_location_id: Optional[Union[int, List[int]]] = DEFAULT_STORAGE_LOCATION_ID, *, synapse_client: Optional[Synapse] = None) -> ProjectSetting
Set the upload storage location for this entity. This configures where files uploaded to this entity will be stored.
This is a destructive update. The provided storage_location_id value(s)
will replace any storage locations previously configured on this entity.
To add a storage location without removing existing ones, first retrieve the
current setting via get_project_setting_async, append to its locations
list, and call store_async on the returned ProjectSetting directly.
| PARAMETER | DESCRIPTION |
|---|---|
storage_location_id
|
The storage location ID(s) to set. Can be a single ID, a list of IDs (first is default, max 10). By default, the default Synapse S3 storage location is used.
TYPE:
|
synapse_client
|
If not passed in and caching was not disabled by
|
| RETURNS | DESCRIPTION |
|---|---|
ProjectSetting
|
The ProjectSetting object reflecting the current state after the operation. |
| RAISES | DESCRIPTION |
|---|---|
ValueError
|
If the entity does not have an id set. |
Replace all storage locations
Fully replace the storage location on a folder with a single location:
import asyncio
from synapseclient import Synapse
from synapseclient.models import Folder
syn = Synapse()
syn.login()
async def main():
folder = await Folder(id="syn123").get_async()
setting = await folder.set_storage_location_async(
storage_location_id=12345
)
print(setting)
asyncio.run(main())
Partial update — add a storage location without removing existing ones
Retrieve the current setting and append a new location:
import asyncio
from synapseclient import Synapse
from synapseclient.models import Folder
syn = Synapse()
syn.login()
async def main():
folder = await Folder(id="syn123").get_async()
setting = await folder.get_project_setting_async(setting_type="upload")
if setting:
setting.locations.append(67890)
await setting.store_async()
asyncio.run(main())
Source code in synapseclient/models/mixins/storage_location_mixin.py
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get_project_setting_async
async
¶
get_project_setting_async(setting_type: str = 'upload', *, synapse_client: Optional[Synapse] = None) -> Optional[ProjectSetting]
Get the project setting for this entity.
| PARAMETER | DESCRIPTION |
|---|---|
setting_type
|
The type of setting to retrieve. Currently only 'upload' is supported.
TYPE:
|
synapse_client
|
If not passed in and caching was not disabled by
|
| RETURNS | DESCRIPTION |
|---|---|
Optional[ProjectSetting]
|
The ProjectSetting object, or None if no setting exists. |
| RAISES | DESCRIPTION |
|---|---|
ValueError
|
If the entity does not have an id set. |
Using this function
Get the upload settings for a folder:
import asyncio
from synapseclient import Synapse
from synapseclient.models import Folder
syn = Synapse()
syn.login()
async def main():
folder = await Folder(id="syn123").get_async()
setting = await folder.get_project_setting_async(setting_type="upload")
if setting:
print(f"Storage locations: {setting.locations}")
asyncio.run(main())
Source code in synapseclient/models/mixins/storage_location_mixin.py
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delete_project_setting_async
async
¶
Delete a project setting by its setting ID.
| PARAMETER | DESCRIPTION |
|---|---|
setting_id
|
The ID of the project setting to delete.
TYPE:
|
synapse_client
|
If not passed in and caching was not disabled by
|
| RETURNS | DESCRIPTION |
|---|---|
None
|
None |
| RAISES | DESCRIPTION |
|---|---|
ValueError
|
If the entity does not have an id set. |
Using this function
Delete the upload settings for a folder:
import asyncio
from synapseclient import Synapse
from synapseclient.models import Folder
syn = Synapse()
syn.login()
async def main():
folder = await Folder(id="syn123").get_async()
await folder.delete_project_setting_async(setting_id="123")
asyncio.run(main())
Source code in synapseclient/models/mixins/storage_location_mixin.py
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synapseclient.models.protocols.storage_location_mixin_protocol.StorageLocationConfigurableSynchronousProtocol
¶
Bases: Protocol
The protocol for methods that are asynchronous but also have a synchronous counterpart that may also be called.
Source code in synapseclient/models/protocols/storage_location_mixin_protocol.py
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Functions¶
set_storage_location
¶
set_storage_location(storage_location_id: Optional[Union[int, List[int]]] = None, *, synapse_client: Optional[Synapse] = None) -> Dict[str, Any]
Set the upload storage location for this entity. This configures where files uploaded to this entity will be stored.
| PARAMETER | DESCRIPTION |
|---|---|
storage_location_id
|
The storage location ID(s) to set. Can be a single ID, a list of IDs (first is default, max 10), or None to use Synapse default storage. |
synapse_client
|
If not passed in and caching was not disabled by
|
| RETURNS | DESCRIPTION |
|---|---|
Dict[str, Any]
|
The project setting dict returned from Synapse. |
| RAISES | DESCRIPTION |
|---|---|
ValueError
|
If the entity does not have an id set. |
Setting storage location on a folder
Set storage location on a folder:
from synapseclient.models import Folder
import synapseclient
synapseclient.login()
folder = Folder(id="syn123").get()
setting = folder.set_storage_location(storage_location_id=12345)
print(setting)
Source code in synapseclient/models/protocols/storage_location_mixin_protocol.py
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get_project_setting
¶
get_project_setting(setting_type: str = 'upload', *, synapse_client: Optional[Synapse] = None) -> Optional[Dict[str, Any]]
Get the project setting for this entity.
| PARAMETER | DESCRIPTION |
|---|---|
setting_type
|
The type of setting to retrieve. One of: 'upload', 'external_sync', 'requester_pays'. Default: 'upload'.
TYPE:
|
synapse_client
|
If not passed in and caching was not disabled by
|
| RETURNS | DESCRIPTION |
|---|---|
Optional[Dict[str, Any]]
|
The project setting as a dictionary, or None if no setting exists. |
| RAISES | DESCRIPTION |
|---|---|
ValueError
|
If the entity does not have an id set. |
Getting project settings
Get the upload settings for a folder:
from synapseclient.models import Folder
import synapseclient
synapseclient.login()
folder = Folder(id="syn123").get()
setting = folder.get_project_setting(setting_type="upload")
if setting:
print(f"Storage locations: {setting.locations}")
Source code in synapseclient/models/protocols/storage_location_mixin_protocol.py
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delete_project_setting
¶
Delete a project setting by its setting ID.
| PARAMETER | DESCRIPTION |
|---|---|
setting_id
|
The ID of the project setting to delete.
TYPE:
|
synapse_client
|
If not passed in and caching was not disabled by
|
| RETURNS | DESCRIPTION |
|---|---|
None
|
None |
| RAISES | DESCRIPTION |
|---|---|
ValueError
|
If the entity does not have an id set. |
Deleting a project setting
Delete the upload settings for a folder:
from synapseclient.models import Folder
import synapseclient
synapseclient.login()
folder = Folder(id="syn123").get()
setting = folder.get_project_setting(setting_type="upload")
if setting:
folder.delete_project_setting(setting_id=setting['id'])
Source code in synapseclient/models/protocols/storage_location_mixin_protocol.py
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get_sts_storage_token
¶
get_sts_storage_token(permission: str, *, output_format: str = 'json', min_remaining_life: Optional[int] = None, synapse_client: Optional[Synapse] = None) -> Any
Get STS (AWS Security Token Service) credentials for direct access to the storage location backing this entity. These credentials can be used with AWS tools like awscli and boto3.
| PARAMETER | DESCRIPTION |
|---|---|
permission
|
The permission level for the token. Must be 'read_only' or 'read_write'.
TYPE:
|
output_format
|
The output format for the credentials. Options: 'json' (default), 'boto', 'shell', 'bash', 'cmd', 'powershell'.
TYPE:
|
min_remaining_life
|
The minimum remaining life (in seconds) for a cached token before a new one is fetched. |
synapse_client
|
If not passed in and caching was not disabled by
|
| RETURNS | DESCRIPTION |
|---|---|
Any
|
The STS credentials in the requested format. |
| RAISES | DESCRIPTION |
|---|---|
ValueError
|
If the entity does not have an id set. |
Using credentials with boto3
Get STS credentials for an STS-enabled folder and use with boto3:
import boto3
from synapseclient.models import Folder
import synapseclient
synapseclient.login()
folder = Folder(id="syn123").get()
credentials = folder.get_sts_storage_token(
permission="read_write",
output_format="boto",
)
s3_client = boto3.client('s3', **credentials)
Source code in synapseclient/models/protocols/storage_location_mixin_protocol.py
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index_files_for_migration
¶
index_files_for_migration(dest_storage_location_id: int, db_path: Optional[str] = None, *, source_storage_location_ids: Optional[List[int]] = None, file_version_strategy: str = 'new', include_table_files: bool = False, continue_on_error: bool = False, synapse_client: Optional[Synapse] = None) -> MigrationResult
Index files in this entity for migration to a new storage location.
This is the first step in migrating files to a new storage location.
After indexing, use migrate_indexed_files to perform the actual migration.
| PARAMETER | DESCRIPTION |
|---|---|
dest_storage_location_id
|
The destination storage location ID.
TYPE:
|
db_path
|
Path to the SQLite database file for tracking migration state. If not provided, a temporary directory will be used. The path can be retrieved from the returned MigrationResult.db_path. |
source_storage_location_ids
|
Optional list of source storage location IDs to filter which files to migrate. If None, all files are indexed. |
file_version_strategy
|
Strategy for handling file versions. Options: 'new' (default) - create new versions, 'all' - migrate all versions, 'latest' - only migrate latest version, 'skip' - skip if file exists.
TYPE:
|
include_table_files
|
Whether to include files attached to tables.
TYPE:
|
continue_on_error
|
Whether to continue indexing if an error occurs.
TYPE:
|
synapse_client
|
If not passed in and caching was not disabled by
|
| RETURNS | DESCRIPTION |
|---|---|
MigrationResult
|
A MigrationResult object containing indexing statistics and the database |
MigrationResult
|
path (accessible via result.db_path). |
Indexing files for migration
Index files in a project for migration:
from synapseclient.models import Project
import synapseclient
synapseclient.login()
project = Project(id="syn123").get()
result = project.index_files_for_migration(
dest_storage_location_id=12345,
)
print(f"Database path: {result.db_path}")
print(f"Indexed {result.counts_by_status}")
Source code in synapseclient/models/protocols/storage_location_mixin_protocol.py
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migrate_indexed_files
¶
migrate_indexed_files(db_path: str, *, create_table_snapshots: bool = True, continue_on_error: bool = False, force: bool = False, synapse_client: Optional[Synapse] = None) -> Optional[MigrationResult]
Migrate files that have been indexed with index_files_for_migration.
This is the second step in migrating files to a new storage location.
Files must first be indexed using index_files_for_migration.
| PARAMETER | DESCRIPTION |
|---|---|
db_path
|
Path to the SQLite database file created by
TYPE:
|
create_table_snapshots
|
Whether to create table snapshots before migrating table files.
TYPE:
|
continue_on_error
|
Whether to continue migration if an error occurs.
TYPE:
|
force
|
Whether to force migration of files that have already been migrated. Also bypasses interactive confirmation.
TYPE:
|
synapse_client
|
If not passed in and caching was not disabled by
|
| RETURNS | DESCRIPTION |
|---|---|
Optional[MigrationResult]
|
A MigrationResult object containing migration statistics, or None |
Optional[MigrationResult]
|
if the user declined the confirmation prompt. |
Migrating indexed files
Migrate previously indexed files:
from synapseclient.models import Project
import synapseclient
synapseclient.login()
project = Project(id="syn123").get()
# Index first
index_result = project.index_files_for_migration(
dest_storage_location_id=12345,
)
# Then migrate using the db_path from index result
result = project.migrate_indexed_files(
db_path=index_result.db_path,
force=True, # Skip interactive confirmation
)
print(f"Migrated {result.counts_by_status}")
Source code in synapseclient/models/protocols/storage_location_mixin_protocol.py
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