EventSchedule

`EventSchedule`	A Scheduled Event.
`EventScheduleCollection`

class EventSchedule(*args, **kwargs)[source]

A Scheduled Event.

Parameters:

client (CatalogClient, optional) – A CatalogClient instance to use for requests to the Descartes Labs catalog. The get_default_client() will be used if not set.
kwargs (dict) – With the exception of readonly attributes (created, modified, and owner) and with the exception of properties (ATTRIBUTES, is_modified, and state), any attribute listed below can also be used as a keyword argument. Also see ATTRIBUTES.

Methods:

`delete`(id[, client])	Delete the catalog object with the given `id`.
`exists`(id[, client, headers])	Checks if an object exists in the Descartes Labs catalog.
`get`([id, namespace, name, client, ...])	Get an existing EventSchedule from the Descartes Labs catalog.
`get_many`(ids[, ignore_missing, client, ...])	Get existing objects from the Descartes Labs catalog.
`get_or_create`([id, namespace, name, client])	Get an existing object from the Descartes Labs catalog or create a new object.
`namespace_id`(namespace_id[, client])	Generate a fully namespaced id.
`reload`([request_params, headers])	Reload all attributes from the Descartes Labs catalog.
`save`([request_params, headers])	Saves this object to the Descartes Labs catalog.
`search`([client, request_params, headers])	A search query for all event schedules.
`serialize`([modified_only, jsonapi_format])	Serialize the catalog object into json.
`update`([ignore_errors])	Update multiple attributes at once using the given keyword arguments.
`user_can_read`([auth])	Check if the authenticated user is an owner, a writer, or a reader and has permissions to read this object.
`user_can_write`([auth])	Check if the authenticated user is an owner or a writer and has permissions to modify this object.
`user_is_owner`([auth])	Check if the authenticated user is an owner, and can perform actions such as changing ACLs or deleting this object.

Attributes:

`ATTRIBUTES`
`arn`	The Amazon Resource Name (ARN) for this event schedule.
`created`	The point in time this object was created.
`description`	A description with further details on this event schedule.
`enabled`	True if the schedule is enabled.
`end_datetime`	Timestamp when the schedule should be expired and deleted.
`expires`	str or datetime, readonly.
`extra_properties`	A dictionary of up to 50 key/value pairs.
`flexible_time_window`	The maximum amount of time in seconds that the event schedule can be delayed.
`id`	A unique identifier for this object.
`is_modified`	Whether any attributes were changed (see `state`).
`modified`	The point in time this object was last modified.
`name`	The name of this event schedule.
`namespace`	The namespace of this event schedule.
`owners`	User, group, or organization IDs that own this object.
`readers`	User, email, group, or organization IDs that can read this object.
`schedule`	The schedule expression for this event schedule.
`schedule_timezone`	The timezone for the schedule expression.
`start_datetime`	Timestamp when the schedule should begin.
`state`	The state of this catalog object.
`tags`	A list of up to 32 tags, each up to 1000 bytes long.
`v1_properties`	The value of the attribute is checked against the given type.
`writers`	User, group, or organization IDs that can edit this object.

classmethod delete(id, client=None)

Delete the catalog object with the given id.

Parameters:

id (str) – The id of the object to be deleted.
client (CatalogClient, optional) – A CatalogClient instance to use for requests to the Descartes Labs catalog. The get_default_client() will be used if not set.

Returns:

True if this object was successfully deleted. False if the object was not found.

Return type:

bool

Raises:

ConflictError – If the object has related objects (bands, images) that exist.
ClientError or ServerError – Spurious exception that can occur during a network request.

Example

>>> Image.delete('my-image-id') 

There is also an instance delete method that can be used to delete an object. It accepts no parameters and does not return anything. Once deleted, you cannot use the catalog object and should release any references.

classmethod exists(id, client=None, headers=None)

Checks if an object exists in the Descartes Labs catalog.

Parameters:

id (str) – The id of the object.
client (CatalogClient, optional) – A CatalogClient instance to use for requests to the Descartes Labs catalog. The get_default_client() will be used if not set.

Returns:

Returns True if the given id represents an existing object in the Descartes Labs catalog and False if not.

Return type:

bool

Raises:

ClientError or ServerError – Spurious exception that can occur during a network request.

classmethod get(id=None, namespace=None, name=None, client=None, request_params=None, headers=None)[source]

Get an existing EventSchedule from the Descartes Labs catalog.

If the EventSchedule is found, it will be returned in the SAVED state. Subsequent changes will put the instance in the MODIFIED state, and you can use save() to commit those changes and update the Descartes Labs catalog object. Also see the example for save().

Exactly one of the id and name parameters must be specified. If name is specified, it is used together with the namespace parameters to form the corresponding id.

Parameters:

id (str, optional) – The id of the object you are requesting. Required unless name is supplied. May not be specified if name is specified.
namespace (str, optional) – The namespace of the EventSchedule you wish to retrieve. Defaults to the user’s org name (if any) plus the unique user hash. Ignored unless name is specified.
name (str, optional) – The name of the EventSchedule you wish to retrieve. Required if id is not specified. May not be specified if id is specified.
client (CatalogClient, optional) – A CatalogClient instance to use for requests to the Descartes Labs catalog. The get_default_client() will be used if not set.

Returns:

The object you requested, or None if an object with the given id does not exist in the Descartes Labs catalog.

Return type:

CatalogObject or None

Raises:

ClientError or ServerError – Spurious exception that can occur during a network request.

classmethod get_many(ids, ignore_missing=False, client=None, request_params=None, headers=None)

Get existing objects from the Descartes Labs catalog.

All returned Descartes Labs catalog objects will be in the SAVED state. Also see get().

For bands, if you request a specific band type, for example SpectralBand.get_many(), you will only receive that type. Use Band.get_many() to receive any type.

Parameters:

ids (list(str)) – A list of identifiers for the objects you are requesting.
ignore_missing (bool, optional) – Whether to raise a NotFoundError exception if any of the requested objects are not found in the Descartes Labs catalog. False by default which raises the exception.
client (CatalogClient, optional) – A CatalogClient instance to use for requests to the Descartes Labs catalog. The get_default_client() will be used if not set.

Returns:

List of the objects you requested in the same order.

Return type:

list(CatalogObject)

Raises:

NotFoundError – If any of the requested objects do not exist in the Descartes Labs catalog and ignore_missing is False.
ClientError or ServerError – Spurious exception that can occur during a network request.

classmethod get_or_create(id=None, namespace=None, name=None, client=None, **kwargs)[source]

Get an existing object from the Descartes Labs catalog or create a new object.

If the Descartes Labs catalog object is found, and the remainder of the arguments do not differ from the values in the retrieved instance, it will be returned in the SAVED state.

If the Descartes Labs catalog object is found, and the remainder of the arguments update one or more values in the instance, it will be returned in the MODIFIED state.

If the Descartes Labs catalog object is not found, it will be created and the state will be UNSAVED. Also see the example for save().

Parameters:

id (str, optional) – The id of the object you are requesting. Required unless name is supplied. May not be specified if name is specified.
namespace (str, optional) – The namespace of the EventSchedule you wish to retrieve. Defaults to the user’s org name (if any) plus the unique user hash. Ignored unless name is specified.
name (str, optional) – The name of the EventSchedule you wish to retrieve. Required if id is not specified. May not be specified if id is specified.
client (CatalogClient, optional) – A CatalogClient instance to use for requests to the Descartes Labs catalog. The get_default_client() will be used if not set.
kwargs (dict, optional) – With the exception of readonly attributes (created, modified), any attribute of a catalog object can be set as a keyword argument (Also see ATTRIBUTES).

Returns:

The requested catalog object that was retrieved or created.

Return type:

CatalogObject

classmethod namespace_id(namespace_id, client=None)[source]

Generate a fully namespaced id.

Parameters:

namespace_id (str or None) – The unprefixed part of the id that you want prefixed.
client (CatalogClient, optional) – A CatalogClient instance to use for requests to the Descartes Labs catalog. The get_default_client() will be used if not set.

Returns:

The fully namespaced id.

Return type:

str

Example

>>> namespace = EventSchedule.namespace_id("myproject") 
'myorg:myproject' 

reload(request_params=None, headers=None)

Reload all attributes from the Descartes Labs catalog.

Refresh the state of this catalog object from the object in the Descartes Labs catalog. This may be necessary if there are concurrent updates and the object in the Descartes Labs catalog was updated from another client. The instance state must be in the SAVED state.

If you want to revert a modified object to its original one, you should use get() on the object class with the object’s id.

Raises:

ValueError – If the catalog object is not in the SAVED state.
DeletedObjectError – If this catalog object was deleted.
ClientError or ServerError – Spurious exception that can occur during a network request.

save(request_params=None, headers=None)

Saves this object to the Descartes Labs catalog.

If this instance was created using the constructor, it will be in the UNSAVED state and is considered a new Descartes Labs catalog object that must be created. If the catalog object already exists in this case, this method will raise a BadRequestError.

If this instance was retrieved using get(), get_or_create() or any other way (for example as part of a search()), and any of its values were changed, it will be in the MODIFIED state and the existing catalog object will be updated.

If this instance was retrieved using get(), get_or_create() or any other way (for example as part of a search()), and none of its values were changed, it will be in the SAVED state, and if no request_params parameter is given, nothing will happen.

Parameters:

request_params (dict, optional) – A dictionary of attributes that should be sent to the catalog along with attributes already set on this object. Empty by default. If not empty, and the object is in the SAVED state, it is updated in the Descartes Labs catalog even though no attributes were modified.
headers (dict, optional) – A dictionary of header keys and values to be sent with the request.

Raises:

ConflictError – If you’re trying to create a new object and the object with given id already exists in the Descartes Labs catalog.
BadRequestError – If any of the attribute values are invalid.
DeletedObjectError – If this catalog object was deleted.
ClientError or ServerError – Spurious exception that can occur during a network request.

classmethod search(client=None, request_params=None, headers=None)[source]

A search query for all event schedules.

Return an EventScheduleSearch instance for searching event schedules in the Descartes Labs catalog.

Parameters:: client (CatalogClient, optional) – A CatalogClient instance to use for requests to the Descartes Labs catalog.
Returns:: An instance of the EventScheduleSearch class
Return type:: EventScheduleSearch

Example

>>> from descarteslabs.catalog import EventSchedule
>>> search = EventSchedule.search().limit(10)
>>> for result in search: 
...     print(result.name) 

serialize(modified_only=False, jsonapi_format=False)

Serialize the catalog object into json.

Parameters:

modified_only (bool, optional) – Whether only modified attributes should be serialized. False by default. If set to True, only those attributes that were modified since the last time the catalog object was retrieved or saved will be included.
jsonapi_format (bool, optional) – Whether to use the data element for catalog objects. False by default. When set to False, the serialized data will directly contain the attributes of the catalog object. If set to True, the serialized data will follow the exact JSONAPI with a top-level data element which contains id, type, and attributes. The latter will contain the attributes of the catalog object.

update(ignore_errors=False, **kwargs)

Update multiple attributes at once using the given keyword arguments.

Parameters:

ignore_errors (bool, optional) – False by default. When set to True, it will suppress AttributeValidationError and AttributeError. Any given attribute that causes one of these two exceptions will be ignored, all other attributes will be set to the given values.

Raises:

AttributeValidationError – If one or more of the attributes being updated are immutable.
AttributeError – If one or more of the attributes are not part of this catalog object.
DeletedObjectError – If this catalog object was deleted.

user_can_read(auth=None)

Check if the authenticated user is an owner, a writer, or a reader and has permissions to read this object.

Note it is kind of silly to call this method unless a non-default auth object is provided, because the default authorized user must have read permission in order to even retrieve this object.

Parameters:: auth (Auth, optional) – The auth object to use for the check. If not provided, the default auth object will be used.
Returns:: True if the user can read the object, False otherwise.
Return type:: bool

user_can_write(auth=None)

Check if the authenticated user is an owner or a writer and has permissions to modify this object.

Parameters:: auth (Auth, optional) – The auth object to use for the check. If not provided, the default auth object will be used.
Returns:: True if the user can modify the object, False otherwise.
Return type:: bool

user_is_owner(auth=None)

Check if the authenticated user is an owner, and can perform actions such as changing ACLs or deleting this object.

Parameters:: auth (Auth, optional) – The auth object to use for the check. If not provided, the default auth object will be used.
Returns:: True if the user is an owner of the object, False otherwise.
Return type:: bool

ATTRIBUTES = ('namespace', 'name', 'description', 'arn', 'schedule', 'schedule_timezone', 'start_datetime', 'end_datetime', 'flexible_time_window', 'enabled', 'expires', 'owners', 'readers', 'writers', 'extra_properties', 'tags', 'id', 'created', 'modified')

arn

The Amazon Resource Name (ARN) for this event schedule.

The ARN is a unique identifier for this event schedule in the AWS ecosystem.

Searchable, sortable.

Type:: str

created

The point in time this object was created.

Filterable, sortable.

Type:: datetime, readonly

description

A description with further details on this event schedule.

The description can be up to 80,000 characters and is used by Search.find_text().

Searchable

Type:: str, optional

enabled

True if the schedule is enabled. Non-enabled schedules are ignored during the matching of events.

Filterable, sortable.

Type:: bool, optional

end_datetime

Timestamp when the schedule should be expired and deleted.

Filterable, sortable.

Type:: str or datetime, optional

expires

str or datetime, readonly. Timestamp when the schedule will be expired and deleted. Set automatically when the schedule is created or updated.

Filterable, sortable.

extra_properties

A dictionary of up to 50 key/value pairs.

The keys of this dictionary must be strings, and the values of this dictionary can be strings or numbers. This allows for more structured custom metadata to be associated with objects.

Type:: dict, optional

flexible_time_window

The maximum amount of time in seconds that the event schedule can be delayed. The event will be generated at a random time within this window, beginning with the nominal scheduled time.

Filterable, sortable.

Type:: int, optional

id

A unique identifier for this object.

Note that if you pass a string that does not begin with your Descartes Labs user organization ID, it will be prepended to your id with a : as separator. If you are not part of an organization, your user ID is used. Once set, it cannot be changed.

Type:: str, immutable

property is_modified

Whether any attributes were changed (see state).

True if any of the attribute values changed since the last time this catalog object was retrieved or saved. False otherwise.

Note that assigning an identical value does not affect the state.

Type:: bool

modified

The point in time this object was last modified.

Filterable, sortable.

Type:: datetime, readonly

name

The name of this event schedule.

All event_schedules are stored and indexed by name. Names are allowed a restricted alphabet (a-zA-Z0-9_-).

Searchable, sortable.

Type:: str

namespace

The namespace of this event schedule.

All event schedules are stored and indexed under a namespace. Namespaces are allowed a restricted alphabet (a-zA-Z0-9:._-), and must begin with the user’s org name, or their unique user hash if the user has no org. The required prefix is seperated from the rest of the namespace name (if any) by a :. If not provided, the namespace will default to the users org (if any) and the unique user hash.

Searchable, sortable.

Type:: str

owners

User, group, or organization IDs that own this object.

Defaults to [user:current_user, org:current_org]. The owner can edit, delete, and change access to this object. See this note.

Filterable.

Type:: list(str), optional

readers

User, email, group, or organization IDs that can read this object.

Will be empty by default. This attribute is only available in full to the owners of the object. See this note.

Type:: list(str), optional

schedule

The schedule expression for this event schedule.

The schedule expression can be one of three forms. For a single event, use the at() form. For an event which is triggered on a fixed interval, use the rate() form. For a cron-type event which recurs, use the cron() form. See the AWS EventBridge Scheduler documentation at https://docs.aws.amazon.com/scheduler/latest/UserGuide/schedule-types.html for the complete syntax of these expressions.

Searchable, sortable.

Type:: str

schedule_timezone

The timezone for the schedule expression. Must be a valid timezone string as defined by the IANA ZoneInfoiana database.

Searchable, sortable.

Type:: str

start_datetime

Timestamp when the schedule should begin.

Filterable, sortable.

Type:: str or datetime, optional

property state

The state of this catalog object.

Type:: DocumentState

tags

A list of up to 32 tags, each up to 1000 bytes long.

The tags may support the classification and custom filtering of objects.

Filterable.

Type:: list, optional

v1_properties

The value of the attribute is checked against the given type.

Parameters:

attribute_type (type) – The type of the attribute.
coerce (bool, optional) – Whether a non-conforming value should be coerced to that type. False by default.
**kwargs (optional) – See Attribute.

writers

User, group, or organization IDs that can edit this object.

Writers will also have read permission. Writers will be empty by default. See note below. This attribute is only available in full to the owners of the object. See this note.

Type:: list(str), optional

class EventScheduleCollection(iterable=None, item_type=None)[source]

Methods:

`append`(x)	Append x to the end of this `Collection`.
`extend`(x)	Extend this `Collection` by appending elements from the iterable.
`filter`(predicate)	Returns a `Collection` filtered by predicate.
`groupby`(*predicates)	Groups items by predicates.
`map`(f)	Returns a `Collection` of `f` applied to each item.
`sort`(field[, ascending])	Returns a `Collection`, sorted by the given field and direction.
`sorted`(predicates, *reverse)	Returns a `Collection`, sorted by predicates in ascending order.

Attributes:

each

Any operations chained onto each (attribute access, item access, and calls) are applied to each item in the Collection.

append(x)

Append x to the end of this Collection.

The type of the item must match the type of the collection.

Parameters:: x (Any) – Add an item to the collection

extend(x)

Extend this Collection by appending elements from the iterable.

The type of the items in the list must all match the type of the collection.

Parameters:: x (List[Any]) – Extend a collection with the items from the list.

filter(predicate)

Returns a Collection filtered by predicate.

Predicate can either be a callable or an Expression from Properties.

If the predicate is a callable, filter() will return all items for which predicate(item) is True.

If the predicate is an Expression, filter() will return all items for which predicate.evaluate(item) is True.

Parameters:: predicate (callable or Expression) – Either a callable or a Properties Expression which is called or evaluated for each item in the list.
Returns:: A new collection with only those items for which the predicate returned or evaluated to True.
Return type:: Collection

groupby(*predicates)

Groups items by predicates.

Groups items by predicates and yields tuple of (group, items) for each group, where items is a Collection.

Each predicate can be a key function, or a string of dot-chained attributes to use as sort keys.

Parameters:: predicates (callable or str) – Any positional arguments are predicates. If the predicate is a string, it denotes an attribute for each element, potentially with levels separated by a dot. If the predicate is a callable, it must return the value to sort by for each given element.
Yields:: Tuple[str, Collection] – A tuple of (group, Collection) for each group.

Examples

>>> import collections
>>> FooBar = collections.namedtuple("FooBar", ["foo", "bar"])
>>> c = Collection([FooBar("a", True), FooBar("b", False), FooBar("a", False)])

>>> for group, items in c.groupby("foo"):
...     print(group)
...     print(items)
a
Collection([FooBar(foo='a', bar=True), FooBar(foo='a', bar=False)])
b
Collection([FooBar(foo='b', bar=False)])
>>> for group, items in c.groupby("bar"):
...     print(group)
...     print(items)
False
Collection([FooBar(foo='b', bar=False), FooBar(foo='a', bar=False)])
True
Collection([FooBar(foo='a', bar=True)])

map(f)

Returns a Collection of f applied to each item.

Parameters:: f (callable) – Apply function f to each element of the collection and return the result as a collection.
Returns:: A collection with the results of the function f applied to each element of the original collection.
Return type:: Collection

sort(field, ascending=True)

Returns a Collection, sorted by the given field and direction.

Parameters:

field (str) – The name of the field to sort by
ascending (bool) – Sorts results in ascending order if True (the default), and in descending order if False.

Returns:

The sorted collection.

Return type:

Collection

Example

>>> from descarteslabs.catalog import Product
>>> collection = Product.search().collect() 
>>> sorted_collection = collection.sort("created", ascending=False) 
>>> sorted_collection 

sorted(*predicates, **reverse)

Returns a Collection, sorted by predicates in ascending order.

Each predicate can be a key function, or a string of dot-chained attributes to use as sort keys. The reverse flag returns results in descending order.

Parameters:

predicates (callable or str) – Any positional arguments are predicates. If the predicate is a string, it denotes an attribute for each element, potentially with levels separated by a dot. If the predicate is a callable, it must return the value to sort by for each given element.
reverse (bool) – The sort is ascending by default, by setting reverse to True, the sort will be descending.

Returns:

The sorted collection.

Return type:

Collection

Examples

>>> import collections
>>> FooBar = collections.namedtuple("FooBar", ["foo", "bar"])
>>> X = collections.namedtuple("X", "x")
>>> c = Collection([FooBar(1, X("one")), FooBar(2, X("two")), FooBar(3, X("three"))])

>>> c.sorted("foo")
Collection([FooBar(foo=1, bar=X(x='one')), FooBar(foo=2, bar=X(x='two')), FooBar(foo=3, bar=X(x='three'))])
>>> c.sorted("bar.x")
Collection([FooBar(foo=1, bar=X(x='one')), FooBar(foo=3, bar=X(x='three')), FooBar(foo=2, bar=X(x='two'))])

property each

Any operations chained onto each (attribute access, item access, and calls) are applied to each item in the Collection.

Yields:: Any – The result of an item with all operations following each applied to it.

Notes

Add combine() at the end of the operations chain to combine the results into a list by default, or any container type passed into combine()
Use pipe(f, *args, **kwargs) to yield f(x, *args, **kwargs) for each item x yielded by the preceeding operations chain

Examples

>>> c = Collection(["one", "two", "three", "four"])
>>> for x in c.each.capitalize():
...     print(x)
One
Two
Three
Four
>>> c.each.capitalize()[:2]
'On'
'Tw'
'Th'
'Fo'
>>> c.each.capitalize().pipe(len)
3
3
5
4
>>> list(c.each.capitalize().pipe(len).combine(set))
[3, 4, 5]