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Esri Developer

ArcGIS API for PythonAPI Reference

arcgis.realtime module

The arcgis.realtime module provides API functions to work with and automate real-time data feeds, continuous processing and analysis of streaming data, and stream layers.

This module contains the following:

  • StreamLayer provides types and functions for receiving real-time data feeds and sensor data streamed fromthe GIS to perform continuous processing and analysis. It includes support for stream layers that allow Python scriptsto subscribe to the streamed feature data or broadcast updates or alerts.

  • TheVelocity class and the various submodules provide API functions to automate the ArcGIS Velocity REST API.

StreamLayer

classarcgis.realtime.StreamLayer(url,gis=None)

Allows Python scripts to subscribe to the feature data streamed from the GIS, using ArcGISGeoEvent Server or ArcGIS Velocity, or to broadcast updates and alerts. This class can be used to perform continuous processing andanalysis on streaming data as it is received.

propertyfilter

Get/Set property used for filtering the streamed features so they meet spatial and SQL like criteria,and return the specified fields.

propertyout_sr

Get/Set the spatial reference of the streamed features.

subscribe(on_features,on_open=None,on_disconnect=None,on_error=None)

Allows Python scripts to subscribe to the feature data streamed from the GIS using ArcGISGeoEvent Server or ArcGIS Velocity. Subscribing to the streamed data can be used to perform continuous processing andanalysis of real-time data as it is received.

Parameter

Description

on_features

callback function that is called every time features are streamedto the client.

on_open

callback function called when the connection to the streaming serveris created.

on_disconnect

callback function called when the connection to the streaming serveris closed.

on_error

callback function called if the connection recieves an error.

Velocity

classarcgis.realtime.Velocity(url:str,gis:GIS)

Provides access to real-time analytics, big data analytics, and feeds in ArcGIS Velocity.

Parameter

Description

url

URL of the ArcGIS Velocity organization.

gis

an authenticatedarcigs.gis.GIS object.

# Connect to a Velocity instance:gis=GIS(url="url",username="username",password="password",)velocity=gis.velocityvelocity
# UsageExample:fromarcgis.gisimportGISgis=GIS(url="url",username="username",password="password",)velocity=gis.velocityvelocity
propertybigdata_analytics:BigDataAnalyticsManager

Provides access to the resource manager for managing configured big data analytic tasks in ArcGIS Velocity.

Returns:

BigDataAnalyticsManager

# Get instance of bigdata_analytics from `velocity`:bigdata_analytics=velocity.bigdata_analyticsbigdata_analytics
propertyfeeds:FeedsManager

Provides access to the resource manager for managing configured feeds in ArcGIS Velocity.

Returns:

FeedsManager

# Get instance of feeds from `velocity`:feeds=velocity.feedsfeeds
propertyrealtime_analytics:RealTimeAnalyticsManager

Provides access to the resource manager for managing configured real-time analytic tasks in ArcGIS Velocity.

Returns:

RealTimeAnalyticsManager

# Get instance of realtime_analytics from `velocity`:realtime_analytics=velocity.realtime_analyticsrealtime_analytics

FeedsManager

classarcgis.realtime.velocity.FeedsManager(url:str,gis:GIS)

Used to manage a feed item.

Parameter

Description

url

URL of the ArcGIS Velocity organization.

gis

An authenticatedGIS object.

create(feed=None)Feed

Creates a new feed configuration.

Parameter

Description

feed

An instance of a feed such as RSS or HTTP Poller.

Returns:

Id and label of the newly created feed

# Usage Example of creating a feature layer feed# Connect to a Velocity instancefromarcgisimportGISfromarcgis.realtime.velocity.feeds_managerimportFeedgis=GIS(url="https://url.link",username="user_name",password="user_password",)velocity=gis.velocityfeeds=gis.velocity.feedsfeeds# Configure the Feature Layer Feedfromarcgis.realtime.velocity.feedsimportFeatureLayerfromarcgis.realtime.velocity.http_authentication_typeimport(NoAuth,BasicAuth,CertificateAuth,)fromarcgis.realtime.velocity.input.formatimportDelimitedFormatfromarcgis.realtime.velocity.feeds.geometryimportXYZGeometry,SingleFieldGeometryfromarcgis.realtime.velocity.feeds.timeimportTimeInterval,TimeInstantfromarcgis.realtime.velocity.feeds.run_intervalimportRunInterval# feature layer propertiesname="feature_layer_name"description="feature_layer_description"url="feature_layer_url"extent={"spatialReference":{"latestWkid":3857,"wkid":102100},"xmin":"xmin","ymin":"ymin","xmax":"xmax","ymax":"ymax"}# Set time fieldtime=TimeInterval(interval_start_field="start_field",interval_end_field="end_field"# time instant# time = TimeInstant(time_field="pubDate")# feature_layer_config.set_time_config(time=time))# Set recurrencerun_interval=RunInterval(cron_expression="0 * * ? * * *",timezone="America/Los_Angeles")# Set geometry field - configuring X,Y and Z fieldsgeometry=XYZGeometry(x_field="x",y_field="y",wkid=4326)# a single field geometry could also be configured# geometry = SingleFieldFeometry(# geometry_field="geometry_field"# geometry_type="esriGeometryPoint",# geometry_format="esrijson",# wkid=4326# )# feature_layer.set_geometry_config(geometry=geometry)feature_layer_config=FeatureLayer(label=name,description=description,query="1=1",fields="*",outSR=4326,url=url,extent=extent,time_stamp_field=time)# Manipulate the schema - rename or remove fields, change field data-typefeature_layer_config.rename_field("org_field_name","new_field_name")feature_layer_config.remove_field("description")# Set track idfeature_layer_config.set_track_id("track_id")# Set recurrencefeature_layer_config.run_interval=RunInterval(cron_expression="0 * * ? * * *",timezone="America/Los_Angeles")# Create the feed and start itfeature_layer_feed=feeds.create(feature_layer_config)feature_layer_feed.start()feeds.items
get(id)Feed

Get feed by ID.

Parameter

Description

id

Unique ID of a feed.

Returns:

endpoint response of feed for the given id and label.

# Get feed by id# Method: <item>.get(id)sample_feed=feeds.get("id")
propertyitems:List[Feed]

Get all feeds.

Returns:

returns a collection of all configured feed tasks with feed id and feed label.

# Get all feeds itemall_feeds=feeds.itemsall_feeds

RealTimeAnalyticsManager

classarcgis.realtime.velocity.RealTimeAnalyticsManager(url:str,gis:GIS)

Used to manage real-time analytic items.

Parameter

Description

url

URL of the ArcGIS Velocity organization.

gis

an authenticatedarcigs.gis.GIS object.

get(id)RealTimeAnalytics

Get real-time analytic item by ID.

Parameter

Description

id

Unique ID of a real-time analytic.

Returns:

endpoint response of real-time analytics for the given id and label

# Get real-time analytics by id# Method: <item>.get(id)sample_realtime_task=realtime_analytics.get("id")
propertyitems:List[RealTimeAnalytics]

Get all real-time analytic items.

Returns:

returns a collection of all real-time analytics items with id and label.

# Get all real-time analytics itemsall_realtime_analytics=realtime_analytics.itemsall_realtime_analytics

BigDataAnalyticsManager

classarcgis.realtime.velocity.BigDataAnalyticsManager(url:str,gis:GIS)

Used to manage big data analytic items.

Parameter

Description

url

URL of the ArcGIS Velocity organization.

gis

An authenticatedarcigs.gis.GIS object.

get(id)BigDataAnalytics

Get big data analytic items by ID.

Parameter

Description

id

Unique ID of a big data analytic task.

Returns:

endpoint response of Big Data Analytics for the given id and label

# Get big data analytics by id# Method: <item>.get(id)sample_bigdata_task=bigdata_analytics.get("id")
propertyitems:List[BigDataAnalytics]

Get all big data analytic items.

Returns:

returns a collection of all configured Big Data Analytics items

# Get all big data analyticsall_bigdata_analytics=bigdata_analytics.itemsall_bigdata_analytics

Feed

classarcgis.realtime.velocity.Feed(gis:GIS,util:_Util,item:Dict|None=None)

TheFeed class implements Task and provides public facing methods to access Feed API endpoints.

delete()bool

Deletes an existing Feed instance.

Returns:

A boolean containing True (for success) orFalse (for failure) a dictionary with details is returned.

# Delete a feed# Method: <item>.delete()sample_feed.delete()
propertymetrics:Dict

Get the metrics of the running Feed for the given ID.

Returns:

response of feed metrics

# Method: <item>.metrics# Retrieve metrics of sample_feedmetrics=sample_feed.metricsmetrics
start()Dict

Start the Feed for the given ID.

Returns:

response of feed start

# start feed# Method: <item>.startsample_feed.start()
propertystatus:Dict

Get the status of the running Feed for the given ID.:return: response of Feed status

# Retrieve status of sample_feed# Method: <item>.statusSample_feed=feeds.get("id")status=sample_feed.statusstatus
stop()Dict

Stop the Feed for the given ID.Return True if the Feed was successfully stopped.

Returns:

boolean

# stop feed# Method: <item>.stopsample_feed.stop()

RealTimeAnalytics

classarcgis.realtime.velocity.RealTimeAnalytics(gis:GIS,util:_Util,item:Dict|None=None)

theRealTimeAnalytics class implements Task and provides public facing methods toaccess RealTimeAnalytics API endpoints.

delete()bool

Deletes an existing Real-Time Analytics task instance.

Returns:

A boolean containing True (for success) or False (for failure) a dictionary with details is returned.

# Delete a real-time analytics# Method: <item>.delete()sample_realtime_task.delete
propertymetrics:Dict

Get the metrics of the running Real-Time Analytics for the given ID.

Returns:

response of Real-Time Analytics metrics

# Retrieve metrics of real-time analytics task# Property: <item>.metrics()metrics=sample_realtime_task.metricsmetrics
start()Dict

Start the Real-Time Analytics for the given ID.

Returns:

response of realtime_analytics start

# Start real-time analytics# Method: <item>.start()sample_realtime_task.start()
propertystatus:Dict

Get the status of the running Real-Time Analytics for the given ID.

Returns:

response of Real-Time Analytics status

# Retrieve status of real-time analytics task# Property: <item>.status()status=sample_realtime_task.statusstatus
stop()Dict

Stop the Real-Time Analytics for the given ID.Return True if the the Real-Time Analytics was successfully stopped.

Returns:

boolean

# Stop real-time analytics# Method: <item>.stop()sample_realtime_task.stop()

BigDataAnalytics

classarcgis.realtime.velocity.BigDataAnalytics(gis:GIS,util:_Util,item:Dict|None=None)

TheBigDataAnalytics class implements Task and provides public facing methods toaccess BigDataAnalytics API endpoints.

delete()bool

Deletes an existing Big Data Analytics instance.

Returns:

A boolean containing True (for success) orFalse (for failure) a dictionary with details is returned.

# Delete a big data analytics# Method: <item>.delete()sample_bigdata_task.delete
propertymetrics:Dict

Get the metrics of the running Big Data Analytics for the given ID.

Returns:

response of Big Data Analytics metrics

# Retrieve metrics of big data analytics task# Property: <item>.metrics()metrics=sample_bigdata_task.metricsmetrics
start()Dict

Start the Big Data Analytics for the given ID.

Returns:

response of bigdata_analytics start

# Start big data analytics# Method: <item>.start()sample_bigdata_task.start()
propertystatus:Dict

Get the status of the running Big Data Analytics for the given ID.

Returns:

response of Big Data Analytics status

# Retrieve status of big data analytics task# Property: <item>.status()status=sample_bigdata_task.statusstatus
stop()Dict

Stop the Big Data Analytics for the given ID.Return True if the Big Data Analytics was successfully stopped.

Returns:

boolean

# Stop big data analytics# Method: <item>.stop()sample_bigdata_task.stop()

BasicAuth

classarcgis.realtime.velocity.BasicAuth(username:str,password:str)

This dataclass is used to specify a Basic HTTP Authentication scenario using username and password.

Parameter

Description

username

String. Username for basic authentication.

password

String. Password for basic authentication.

password:str
username:str

CertificateAuth

classarcgis.realtime.velocity.CertificateAuth(pfx_file_http_location:str,password:str)

This dataclass is used to specify a Basic HTTP Authentication scenario using username and password.

Parameter

Description

pfx_file_http_location

String. HTTP path of the PFX file.

password

String. Password for certificate authentication.

password:str
pfx_file_http_location:str

NoAuth

classarcgis.realtime.velocity.NoAuth

This dataclass is used to specify the no HTTP authentication scenario.

Submodules

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