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Weather Component

Available as of Camel 2.12

The weather: component is used for polling weather information from Open Weather Map - a site that provides free global weather and forecast information. The information is returned as a json String object.

Camel will poll for updates to the current weather and forecasts once per hour by default.

Maven users will need to add the following dependency to their pom.xml for this component:

URI format

Options

Property

Default

Description

location

null

If null Camel will try and determine your current location using the geolocation of your ip address, else specify the city,country. For well known city names, Open Weather Map will determine the best fit, but multiple results may be returned. Hence specifying and country as well will return more accurate data. If you specify "current" as the location then the component will try to get the current latitude and longitude and use that to get the weather details. You can use lat and lon options instead of location.

lat

null

Latitude of location. You can use lat and lon options instead of location.

lon

null

Longitude of location. You can use lat and lon options instead of location.

period

null

If null, the current weather will be returned, else use values of 5, 7, 14 days. Only the numeric value for the forecast period is actually parsed, so spelling, capitalisation of the time period is up to you (its ignored)

headerName

null

To store the weather result in this header instead of the message body. This is useable if you want to keep current message body as-is.

mode

JSON

The output format of the weather data. The possible values are HTML, JSON or XML

units

METRIC

The units for temperature measurement. The possible values are IMPERIAL or METRIC

consumer.delay

3600000

Delay in millis between each poll (default is 1 hour)

consumer.initialDelay

1000

Millis before polling starts.

consumer.userFixedDelay

false

If true, use fixed delay between polls, otherwise fixed rate is used. See ScheduledExecutorService in JDK for details.

You can append query options to the URI in the following format, ?option=value&option=value&...

Exchange data format

Camel will deliver the body as a json formatted java.lang.String (see the mode option above).

Message Headers

Header

Description

CamelWeatherQuery

The original query URL sent to the Open Weather Map site

CamelWeatherLocation

Used by the producer to override the endpoint location and use the location from this header instead.

Samples

In this sample we find the 7 day weather forecast for Madrid, Spain:

To just find the current weather for your current location you can use this:

And to find the weather using the producer we do:

And we can send in a message with a header to get the weather for any location as shown:

And to get the weather at the current location, then:

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