pyle38 0.11.0

Async python client for Tile38

iwpnd.pw · Report Bug · Request Feature

About The Project

This is an asynchonous Python client for Tile38 that allows for fast and easy interaction with the worlds fastest in-memory geodatabase Tile38.

Check out my introductory blog post about the project on my blog.

Example

import asyncio
from pyle38 import Tile38


async def main():
    tile38 = Tile38(url="redis://localhost:9851", follower_url="redis://localhost:9851")

    await tile38.set("fleet", "truck").point(52.25,13.37).exec()

    response = await tile38.follower()
        .within("fleet")
        .circle(52.25, 13.37, 1000)
        .asObjects()

    assert response.ok

    print(response.dict())
    await tile38.quit()

asyncio.run(main())

> {
    "ok": True,
    "elapsed": "48.8µs",
    "objects": [
        {
            "object": {
                "type": "Point",
                "coordinates": [
                    13.37,
                    52.25
                ]
            },
            "id": "truck"
        }
    ],
    "count": 1,
    "cursor": 0
}

Example IPython

In [1]: %autoawait asyncio
In [2]: from pyle38 import Tile38

In [3]: tile38 = Tile38(url='redis://localhost:9851', follower_url='redis://localhost:9852')

In [4]: await tile38.set("fleet", "truck").point(52.25,13.37).exec()
Out[4]: JSONResponse(ok=True, elapsed='51.9µs', err=None)

In [5]: response = await tile38.within("fleet")
   ...:         .circle(52.25, 13.37, 1000)
   ...:         .asObjects()

In [6]: print(response.dict())

  {
    "ok": True,
    "elapsed": "46.3µs",
    "objects": [
        {
            "object": {
                "type": "Point",
                "coordinates": [
                    13.37,
                    52.25
                ]
            },
            "id": "truck"
        }
    ],
    "count": 1,
    "cursor": 0
}

Features

• fully typed using mypy and pydantic
• lazy client
• optional build-in leader/follower logic
• easy to use and integrate
• next to no external dependencies

Built With

• aioredis
• pydantic

Getting Started

Requirements

Python==^3.10.0

Installation

pip install pyle38

Or using Poetry

poetry add pyle38

Now start your Tile38 instance(s) either locally using Docker and docker-compose.

docker-compose up

Or follow the installation instruction on tile38.com to start your install Tile38 and start a server locally.

If you already have a Tile38 instance running somewhere read on.

Import

from pyle38 import Tile38
tile38 = Tile38('redis://localhost:9851')

Leader / Follower

When it comes to replication, Tile38 follows a leader-follower model. The leader receives all commands that SET data, a follower on the other hand is read-only and can only query data. For more on replication in Tile38 refer to the official documentation.

This client is not meant to setup a replication, because this should happen in your infrastructure. But it helps you to specifically execute commands on leader or follower. This way you can make sure that the leader always has enough resources to execute SETs and fire geofence events on webhooks.

For now you can set one follower url to set alongside the leader url.

from pyle38.tile38 import Tile38
tile38 = Tile38('redis://localhost:9851', 'redis://localhost:9851')

Once the client is instantiated with a follower, commands can be explicitly send to the follower, by adding .follower() to your command chaining.

await tile38.follower().get('fleet', 'truck1').asObject()

Pagination

Tile38 has hidden limits set for the amount of objects that can be returned in one request. For most queries/searches this limit is set to 100. This client gives you the option to either paginate the results yourself by add .cursor() and .limit() to your queries, or it abstracts pagination away from the user by adding .all().

Let's say your fleet in Berlin extends 100 vehicles, then

await tile38.within('fleet').get('cities', 'Berlin').asObjects()

will only return 100 vehicle objects. Now you can either get the rest by setting the limit to the amount of vehicles you have in the city and get them all.

await tile38.within('fleet').limit(10000).get('cities', 'Berlin').asObjects()

Or, you can paginate the results in multiple concurrent requests to fit your requirements.

await tile38.within('fleet')
  .cursor(0)
  .limit(100)
  .get('cities', 'Berlin')
  .asObjects()

await tile38.within('fleet')
  .cursor(100)
  .limit(100)
  .get('cities', 'Berlin')
  .asObjects()

await tile38.within('fleet')
  .cursor(200)
  .limit(100)
  .get('cities', 'Berlin')
  .asObjects();

Responses

For now, every Tile38 commands response is parsed into a pydantic object for validation and type safety.

response = await tile38.set('fleet','truck1')
                    .point(52.25,13.37)
                    .exec()

print(response.dict())
> {'ok': True, 'elapsed': '40.7µs'}

response = await tile38.get('fleet', 'truck1').asObject()

print(response.ok)
> True

print(response.object)
> {
    'type': 'Point',
    'coordinates': [13.37, 52.25]
    }

print(response.dict())
> {
    'ok': True,
    'elapsed': '29.3µs',
    'object': {
        'type': 'Point',
        'coordinates': [13.37, 52.25]
        }
    }

Commands

Keys

SET

Set the value of an id. If a value is already associated to that key/id, it'll be overwritten.

await tile38.set('fleet', 'truck1')
  .fields({ "maxSpeed": 90, "milage": 90000 })
  .point(33.5123, -112.2693)
  .exec()

# with z coordinate
await tile38.set('fleet', 'truck2')
  .point(33.5123, -112.2693, 100)
  .exec()

await tile38.set('fleet', 'truck1:driver').string('John Denton').exec()

Options

command	description
.fields()	Optional additional fields. MUST BE numerical
.ex(value)	Set the specified expire time, in seconds.
.nx()	Only set the object if it does not already exist.
.xx()	Only set the object if it already exist.

Input

command	description
.point(lat, lon)	Set a simple point in latitude, longitude
.point(lat, lon, z)	Set a simple point in latitude, longitude, height
.bounds(minlat, minlon, maxlat, maxlon)	Set as minimum bounding rectangle
.object(feature)	Set as feature
.hash(geohash)	Set as geohash
.string(value)	Set as string. To retrieve string values you can use .get(), scan() or .search()

FSET

Set the value for one or more fields of an object.

await tile38.fset('fleet', 'truck1', { "maxSpeed": 90, "milage": 90000 })

Options

command	description
.xx()	FSET returns error if fields are set on non-existing ids. xx() options changes this behaviour and instead returns 0 if id does not exist. If key does not exist FSET still returns error

GET

Get the object of an id.

await tile38.get('fleet', 'truck1').asObject()

Get a string object.

await tile38.set('fleet', 'truck1:driver').string('John').exec()
await tile38.get('fleet', 'truck1:driver').asStringObject()

Options

command	description
.withfields()	will also return the fields that belong to the object. Field values that are equal to zero are omitted.

Output

command	description
.asObject()	(default) get as object
.asBounds()	get as minimum bounding rectangle
.asHash(precision)	get as hash
.asPoint()	get as point
.asStringObject()	get a string

DEL

Remove a specific object by key and id.

await tile38.del('fleet', 'truck1')

PDEL

Remove objects that match a given pattern.

await tile38.pDel('fleet', 'truck*')

DROP

Remove all objects in a given key.

await tile38.drop('fleet')

BOUNDS

Get the minimum bounding rectangle for all objects in a given key

await tile38.bounds('fleet')

EXPIRE

Set an expiration/time to live in seconds of an object.

await tile38.expire('fleet', 'truck1', 10)

TTL

Get the expiration/time to live in seconds of an object.

await tile38.ttl('fleet', 'truck1', 10)

PERSIST

Remove an existing expiration/time to live of an object.

await tile38.persist('fleet', 'truck1')

KEYS

Get all keys matching a glob-style-pattern. Pattern defaults to '*'

await tile38.keys()

STATS

Return stats for one or more keys. The returned stats array contains one or more entries, depending on the number of keys in the request.

await tile38.stats('fleet1', 'fleet2')

Returns

command	description
in_memory_size	estimated memory size in bytes
num_objects	objects in the given key
num_points	number of geographical objects in the given key

JSET/JSET/JDEL

Set a value in a JSON document. JGET, JSET, and JDEL allow for working with JSON strings

await tile38.jset('user', 901, 'name', 'Tom')
await tile38.jget('user', 901)
> {'name': 'Tom'}

await tile38.jset('user', 901, 'name.first', 'Tom')
await tile38.jset('user', 901, 'name.first', 'Anderson')
await tile38.jget('user', 901)
> {'name': { 'first': 'Tom', 'last': 'Anderson' }}

await tile38.jdel('user', 901, 'name.last')
await tile38.jget('user', 901);
> {'name': { 'first': 'Tom' }}

RENAME

Renames a collection key to newkey.

Options

command	description
.nx()	Default: false. Changes behavior on how renaming acts if newkey already exists

If the newkey already exists it will be deleted prior to renaming.

await tile38.rename('fleet', 'newfleet', false)

If the newkey already exists it will do nothing.

await tile38.rename('fleet', 'newfleet', true)

Search

Searches are Tile38 bread and butter. They are what make Tile38 a ultra-fast, serious and cheap alternative to PostGIS for a lot of use-cases.

WITHIN

WITHIN searches a key for objects that are fully contained within a given bounding area.

await tile38.within('fleet').bounds(33.462, -112.268,  33.491, -112.245)
> {
   "ok":true,
   "objects":[
      {
         "id":"1",
         "object":{
            "type":"Feature",
            "geometry":{
               "type":"Point",
               "coordinates":[
                  -112.2693,
                  33.5123
               ]
            },
            "properties":{

            }
         }
      }
   ],
   "count":1,
   "cursor":1,
   "elapsed":"72.527µs"
}

await tile38.within('fleet').nofields().asCount()
> {
   "ok":true,
   "count":205,
   "cursor":0,
   "elapsed":"2.078168µs"
}

await tile38.within('fleet').nofields().where("maxspeed", 100, 120).asCount()
> {
   "ok":true,
   "count":80,
   "cursor":0,
   "elapsed":"2.078168µs"
}

await tile38.within('fleet').get('warehouses', 'Berlin').asCount();
> {
   "ok":true,
   "count":50,
   "cursor":0,
   "elapsed":"2.078168µs"
}

Options

command	description
.cursor(value)	used to iterate through your search results. Defaults to 0 if not set explicitly
.limit(value)	limit the number of returned objects. Defaults to 100 if not set explicitly
.nofields()	if not set and one of the objects in the key has fields attached, fields will be returned. Use this to suppress this behavior and don't return fields.
.match(pattern)	Match can be used to filtered objects considered in the search with a glob pattern. .match('truck*') e.g. will only consider ids that start with truck within your key.
.sparse(value)	caution seems bugged since Tile38 1.22.6. Accepts values between 1 and 8. Can be used to distribute the results of a search evenly across the requested area.
.where(fieldname, min value, max value)	filter output by fieldname and values.
.where_expr(expr)	filter output with filter-expression.
.buffer(value)	Apply a buffer around area formats to increase the search area by x meters

Outputs

command	description
.asObjects()	return as array of objects
.asBounds()	return as array of minimum bounding rectangles: {"id": str,"bounds":{"sw":{"lat": float,"lon": float},"ne":{"lat": float,"lon": float}}}
.asCount()	returns a count of the objects in the search
.asHashes(precision)	returns an array of {"id": str,"hash": str}
.asIds()	returns an array of ids
.asPoints()	returns objects as points: {"id": str,"point":{"lat": float,"lon": float}. If the searched key is a collection of Polygon objects, the returned points are the centroids.

Query

command	description
.get(key, id)	Search a given stored item in a collection.
.circle(lat, lon, radius)	Search a given circle of latitude, longitude and radius.
.bounds(minlat, minlon, maxlat, maxlon)	Search a given bounding box.
.hash(value)	Search a given geohash.
.quadkey(value)	Search a given quadkey
.tile(x, y, z)	Search a given tile
.object(value)	Search a given GeoJSON polygon feature.
.sector(lat, lon, radius, bearing1, bearing2)	Search a given Sector polygon feature.

INTERSECTS

Intersects searches a key for objects that are fully contained within a given bounding area, but also returns those that intersect the requested area. When used to search a collection of keys consisting of Point objects (e.g. vehicle movement data) it works like a .within() search as Points cannot intersect. When used to search a collection of keys consisting of Polygon or LineString it also returns objects, that only partly overlap the requested area.

await tile38.intersects('warehouses').hash('u33d').asObjects()

await tile38.intersects('fleet').get('warehouses', 'Berlin').asIds()
> {
   "ok":true,
   "ids":[
      "truck1"
   ],
   "count":1,
   "cursor":0,
   "elapsed":"2.078168ms"
}

await tile38.intersects('warehouses').hash('u33d').where("maxweight", 1000, 1000).asCounts()
> {
   "ok":true,
   "count":80,
   "cursor":0,
   "elapsed":"2.078168µs"
}

Options

command	description
.clip()	Tells Tile38 to clip returned objects at the bounding box of the requested area. Works with .bounds(), .hash(), .tile() and .quadkey()
.cursor(value)	used to iterate through your search results. Defaults to 0 if not set explicitly
.limit(value)	limit the number of returned objects. Defaults to 100 if not set explicitly
.nofields()	if not set and one of the objects in the key has fields attached, fields will be returned. Use this to suppress this behavior and don't return fields.
.match(pattern)	Match can be used to filtered objects considered in the search with a glob pattern. .match('warehouse*') e.g. will only consider ids that start with warehouse within your key.
.sparse(value)	caution seems bugged since Tile38 1.22.6. Accepts values between 1 and 8. Can be used to distribute the results of a search evenly across the requested area.
.where(fieldname, min value, max value)	filter output by fieldname and values.
.where_expr(expr)	filter output with filter-expression.
.buffer(value)	Apply a buffer around area formats to increase the search area by x meters

Outputs

command	description
.asObjects()	return as array of objects
.asBounds()	return as array of minimum bounding rectangles: {"id": str,"bounds":{"sw":{"lat": float,"lon": float},"ne":{"lat": float,"lon": float}}}
.asCount()	returns a count of the objects in the search
.asHashes(precision)	returns an array of {"id": str,"hash": str}
.asIds()	returns an array of ids
.asPoints()	returns objects as points: {"id": str,"point":{"lat": float,"lon": float}. If the searched key is a collection of Polygon objects, the returned points are the centroids.

Query

command	description
.get(key, id)	Search a given stored item in a collection.
.circle(lat, lon, radius)	Search a given circle of latitude, longitude and radius.
.bounds(minlat, minlon, maxlat, maxlon)	Search a given bounding box.
.hash(value)	Search a given geohash.
.quadkey(value)	Search a given quadkey
.tile(x, y, z)	Search a given tile
.object(value)	Search a given GeoJSON polygon feature.
.sector(lat, lon, radius, bearing1, bearing2)	Search a given Sector polygon feature.

Nearby

await tile38.set('fleet', 'truck1').point(33.5123, -112.2693).fields({"maxspeed": 100}).exec()

await tile38.nearby('fleet').where("maxspeed", 100, 100).point(33.5124, -112.2694).asCount()
> {
   "ok":true,
   "count":1,
   "cursor":0,
   "elapsed":"42.8µs"
}

await tile38.nearby('fleet').point(33.5124, -112.2694, 10).asCount
// because truck1 is further away than 10m
> {
   "ok":true,
   "fields": ["maxspeed"],
   "count":0,
   "cursor":0,
   "elapsed":"36µs"
}

Options

command	description
.distance()	Returns the distance in meters to the object from the query .point()
.cursor(value)	used to iterate through your search results. Defaults to 0 if not set explicitly
.limit(value)	limit the number of returned objects. Defaults to 100 if not set explicitly
.nofields()	if not set and one of the objects in the key has fields attached, fields will be returned. Use this to suppress this behavior and don't return fields.
.match(pattern)	Match can be used to filtered objects considered in the search with a glob pattern. .match('warehouse*') e.g. will only consider ids that start with warehouse within your key.
.sparse(value)	caution seems bugged since Tile38 1.22.6. Accepts values between 1 and 8. Can be used to distribute the results of a search evenly across the requested area.
.where(fieldname, min value, max value)	filter output by fieldname and values.
.where_expr(expr)	filter output with filter-expression.

Outputs

command	description
.asObjects()	return as array of objects
.asBounds()	return as array of minimum bounding rectangles: {"id": str,"bounds":{"sw":{"lat": float,"lon": float},"ne":{"lat": float,"lon": float}}}
.asCount()	returns a count of the objects in the search
.asHashes(precision)	returns an array of {"id": str,"hash": str}
.asIds()	returns an array of ids
.asPoints()	returns objects as points: {"id": str,"point":{"lat": float,"lon": float}. If the searched key is a collection of Polygon objects, the returned points are the centroids.

Query

command	description
.point(lat, lon, radius: Optional[int])	Search nearby a given of latitude, longitude. If radius is set, searches nearby the given radius.

SCAN

Incrementally iterate through a given collection key.

await tile38.scan('fleet')

await tile38.scan('fleet').where("maxspeed", 100, 120).asCount()
> {
   "ok":true,
   "count":1,
   "cursor":0,
   "elapsed":"42.8µs"
}

Options

command	description
.asc()	Values are returned in ascending order. Default if not set.
.desc()	Values are returned in descending order.
.cursor(value)	used to iterate through your search results. Defaults to 0 if not set explicitly
.limit(value)	limit the number of returned objects. Defaults to 100 if not set explicitly
.nofields()	if not set and one of the objects in the key has fields attached, fields will be returned. Use this to suppress this behavior and don't return fields.
.match(pattern)	Match can be used to filtered objects considered in the search with a glob pattern. .match('warehouse*') e.g. will only consider ids that start with warehouse within your key.
.where(fieldname, min value, max value)	filter output by fieldname and values.
.where_expr(expr)	filter output with filter-expression.

Outputs

command	description
.asObjects()	return as array of objects
.asBounds()	return as array of minimum bounding rectangles: {"id": str,"bounds":{"sw":{"lat": float,"lon": float},"ne":{"lat": float,"lon": float}}}
.asCount()	returns a count of the objects in the search
.asHashes(precision)	returns an array of {"id": str,"hash": str}
.asIds()	returns an array of ids
.asPoints()	returns objects as points: {"id": str,"point":{"lat": float,"lon": float}. If the searched key is a collection of Polygon objects, the returned points are the centroids.

SEARCH

Used to iterate through a keys string values.

await tile38.set('fleet', 'truck1:driver').string('John').exec()

await tile38.search('fleet').match('J*').asStringObjects()
> {
   "ok":true,
   "objects":[
      {
         "id":"truck1:driver",
         "object":"John"
      }
   ],
   "count":1,
   "cursor":0,
   "elapsed":"59.9µs"
}

Options

command	description
.asc()	Values are returned in ascending order. Default if not set.
.desc()	Values are returned in descending order.
.cursor(value)	used to iterate through your search results. Defaults to 0 if not set explicitly
.limit(value)	limit the number of returned objects. Defaults to 100 if not set explicitly
.nofields()	if not set and one of the objects in the key has fields attached, fields will be returned. Use this to suppress this behavior and don't return fields.
.match(pattern)	Match can be used to filtered objects considered in the search with a glob pattern. .match('J*') e.g. will only consider string values objects that have a string value starting with J
.where(fieldname, min value, max value)	filter output by fieldname and values.
.where_expr(expr)	filter output with filter-expression.

Outputs

command	description
.asStringObjects()	return as array of objects
.asCount()	returns a count of the objects in the search
.asIds()	returns an array of ids

Server and Connection

CONFIG GET / REWRITE / SET

While .config_get() fetches the requested configuration, .config_set() can be used to change the configuration.

Important, changes made with .set() will only take affect after .config_rewrite() is used.

Options

command	description
requirepass	Set a password and make server password-protected, if not set defaults to "" (no password required).
leaderauth	If leader is password-protected, followers have to authenticate before they are allowed to follow. Set leaderauth to password of the leader, prior to .follow().
protected-mode	Tile38 only allows authenticated clients or connections from localhost. Defaults to: "yes"
maxmemory	Set max memory in bytes. Get max memory in bytes/kb/mb/gb.
autogc	Set auto garbage collection to time in seconds where server performs a garbage collection. Defaults to: 0 (no garbage collection)
keep_alive	Time server keeps client connections alive. Defaults to: 300 (seconds)

await tile38.config_get('keepalive')
> {
   "ok":true,
   "properties":{
      "keepalive":"300"
   },
   "elapsed":"54.6µs"
}

await tile38.config_set('keepalive', 400)
> {"ok":true,"elapsed":"36.9µs"}

await tile38.config_rewrite()
> {"ok":true,"elapsed":"363µs"}

await tile38.config_get('keepalive')
> {
   "ok":true,
   "properties":{
      "keepalive":"400"
   },
   "elapsed":"33.8µs"
}

Advanced options Advanced configuration can not be set with commands, but has to be set in a config file in your data directory. Options above, as well as advanced options can be set and are loaded on start-up.

command	description
follow_host	URI of Leader to follow
follow_port	PORT of Leader to follow
follow_pos	?
follow_id	ID of Leader
server_id	Server ID of the current instance
read_only	Make Tile38 read-only

FLUSHDB

Delete all keys and hooks.

await tile38.flushDb()

PING

Ping your server

await tile38.ping()

HEALTHZ

Returns OK if server is the Leader. If server is a Follower, returns OK once the Follower caught up to the Leader. For HTTP requests it returns HTTP 200 OK once caught up, or HTTP 500 Internal Server Error if not.

The command is primarily built to be send via HTTP in orchestration frameworks such as Kubernetes as livelinessProbe and/or readinessProbe. Since a Follower has to catch up to the state of the Leader before it can execute queries, it is essential that it does not receive traffic prior to being caught up.

HEALTHZ in combination with a readinessProbe ensures a ready state.

await tile38.healthz()

// values.yaml

readinessProbe:
  httpGet:
    scheme: HTTP
    path: /healthz
    port: 9851
  initialDelaySeconds: 60

GC

Instructs the server to perform a garbage collection.

await tile38.gc()

READONLY

Sets Tile38 into read-only mode. Commands such as.set() and .del() will fail.

await tile38.readonly(True)

SERVER

Get Tile38 statistics.

await tile38.server()

Or get extended statistics:

await tile38.server_extended()

INFO

Get Tile38 info. Similar to SERVER but different metrics.

await tile38.info()

Geofencing

A geofence is a virtual boundary that can detect when an object enters or exits the area. This boundary can be a radius or any search area format, such as a bounding box, GeoJSON object, etc. Tile38 can turn any standard search into a geofence monitor by adding the FENCE keyword to the search.

Geofence events can be:

• inside (object in specified area),
• outside (object outside specified area),
• enter (object enters specified area),
• exit (object exits specified area),
• crosses (object that was not in specified area, has enter/exit it).

Geofence events can be send on upon commands:

• set which sends an event when an object is .set()
• del which sends a last event when the object that resides in the geosearch is deleted via .del()
• dropwhich sends a message when the entire collection is dropped

SETHOOK

Creates a webhook that points to a geosearch (NEARBY/WITHIN/INTERSECTS). Whenever a commands creates/deletes/drops an object that fulfills the geosearch, an event is send to the specified endpoint.

# sends event to endpoint, when object in 'fleet'
# enters the area of a 500m radius around
# latitude 33.5123 and longitude -112.2693
await tile38.sethook('warehouse', 'http://10.0.20.78/endpoint')
	    .nearby('fleet')
      .point(33.5123, -112.2693, 500)
      .activate()

await tile38.set('fleet', 'bus').point(33.5123001, -112.2693001).exec()
# results in event =
> {
  "command": "set",
  "group": "5c5203ccf5ec4e4f349fd038",
  "detect": "inside",
  "hook": "warehouse",
  "key": "fleet",
  "time": "2021-03-22T13:06:36.769273-07:00",
  "id": "bus",
  "meta": {},
  "object": { "type": "Point", "coordinates": [-112.2693001, 33.5123001] }
}

Geosearch

command	description
.nearby(name, endpoint)
.within(name, endpoint)
.intersects(name, endpoint)

Options

command	description
.meta(meta)	Optional add additional meta information that are send in the geofence event.
.ex(value)	Optional TTL in seconds
.commands(which[])	Select on which command a hook should send an event. Defaults to: ['set', 'del', 'drop']
.detect(what[])	Select what events should be detected. Defaults to: ['enter', 'exit', 'crosses', 'inside', 'outside']

Endpoints

command	description
HTTP/HTTPS	http:// https:// send messages over HTTP/S. For options see link.
gRPC	grpc:// send messages over gRPC. For options see link.
Redis	redis:// send messages to Redis. For options see link
Disque	disque:// send messages to Disque. For options see link.
Kafka	kafka:// send messages to a Kafka topic. For options see link.
AMQP	amqp:// send messages to RabbitMQ. For options see link.
MQTT	mqtt:// send messages to an MQTT broker. For options see link.
SQS	sqs:// send messages to an Amazon SQS queue. For options see link.
NATS	nats:// send messages to a NATS topic. For options see link.

SETCHAN / SUBSCRIBE / PSUBSCRIBE

Similar to sethook(), but opens a PUB/SUB channel.

# Start a channel that sends event, when object in 'fleet'
# enters the area of a 500m radius around
# latitude 33.5123 and longitude -112.2693
await tile38.setchan('warehouse', 'http://10.0.20.78/endpoint')
	    .nearby('fleet')
        .point(33.5123, -112.2693, 500)
        .activate()

Given a proper setup of a pubsub channel, every set .set() results in:

await tile38.set('fleet', 'bus')
    .point(33.5123001, -112.2693001)
    .exec();
# event =
> {
  "command": "set",
  "group": "5c5203ccf5ec4e4f349fd038",
  "detect": "inside",
  "hook": "warehouse",
  "key": "fleet",
  "time": "2021-03-22T13:06:36.769273-07:00",
  "id": "bus",
  "meta": {},
  "object": { "type": "Point", "coordinates": [-112.2693001, 33.5123001] }
}

Geosearch

command	description
.nearby(name, endpoint)
.within(name, endpoint)
.intersects(name, endpoint)

Options

command	description
.meta(meta)	Optional addition meta information that a send in the geofence event.
.ex(value)	Optional TTL in seconds
.commands(which[])	Select on which command a hook should send an event. Defaults to: ['set', 'del', 'drop']
.detect(what[])	Select what events should be detected. Defaults to: ['enter', 'exit', 'crosses', 'inside', 'outside']

Addition Information

For more information, please refer to:

• Tile38

Roadmap

See the open issues for a list of proposed features (and known issues).

Contributing

Contributions are what make the open source community such an amazing place to be learn, inspire, and create. Any contributions you make are greatly appreciated.

1. Fork the Project
2. Create your Feature Branch (git checkout -b feature/AmazingFeature)
3. Commit your Changes (git commit -m 'Add some AmazingFeature')
4. Push to the Branch (git push origin feature/AmazingFeature)
5. Open a Pull Request

License

MIT

Maintainer

Benjamin Ramser - @iwpnd

Project Link: https://github.com/iwpnd/pyle38

Acknowledgements

Josh Baker - maintainer of Tile38