Google Routes

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Overview

Client-mode REST API connectors for Google Maps Platform: geocoding, elevation, time zone, device geolocation, Routes API ETAs and matrices, Roads API snap to roads and speed limits, Places search, Address Validation, Weather and Air Quality. This is one of the templates in the Google Maps Platform REST API app (google-maps-platform). Deploy it alongside the other connectors of that app when they depend on each other (for example a token connector plus an API connector).

Not yet verified against the live vendor API: No Google Maps Platform API key: every event needs a key. All 18 events were sent to the real Google hosts with a dummy key and got Google’s invalid-key answer (classic web services 200 status REQUEST_DENIED, newer APIs 400 API_KEY_INVALID), but no keyed call could run.

Auth

schemes: [“API key query parameter key= (Geocoding, Elevation, Time Zone, Geolocation, Roads, Address Validation, Weather, Air Quality)”, “X-Goog-Api-Key header + required X-Goog-FieldMask header (Routes API, Places API (New))”]
secrets: [“GOOGLE_MAPS_API_KEY”]
note: OAuth 2.0 service accounts not packaged (Fleet Engine and Route Optimization need OAuth).

Auth headers used by the template: X-Goog-Api-Key: {value.json.apikey}.

Template parameters

Placeholder	Type	Description	Required
`RouteName`	string	Name of the Google Routes connector	no
`BaseUrl`	string	Google Routes base URL without trailing slash (e.g. https://routes.googleapis.com)	yes

BASE_ADDRESS default: https://routes.googleapis.com.

Events

Event	Method	Endpoint	Request topic	Response topic	Payload fields
`ComputeRoutes`	POST	`/directions/v2:computeRoutes`	`fleet/google-maps/routes/compute`	`fleet/google-maps/routes/compute/response`	`apikey`, `body`, `fieldmask`
`ComputeRouteMatrix`	POST	`/distanceMatrix/v2:computeRouteMatrix`	`fleet/google-maps/routes/matrix`	`fleet/google-maps/routes/matrix/response`	`apikey`, `body`, `fieldmask`

Deploy

Get the template card (JSON with template and metadata) from the broker, then deploy the connector:

mosquitto_pub -t '$SYS/Coreflux/Command' -m "-routeCode GOOGLE_ROUTES"

The deployable connector from the REST API app, with BASE_ADDRESS already filled in:

DEFINE ROUTE GoogleRoutes WITH TYPE REST_API
    ADD REST_API_CONFIG
        WITH BASE_ADDRESS "https://routes.googleapis.com"
        WITH ENABLE_CLIENT "true"
        WITH USE_SSL "true"
        WITH REQUEST_TIMEOUT '30'
        WITH DEFAULT_CONTENT_TYPE "application/json"
    ADD EVENT ComputeRoutes
        WITH SOURCE_TOPIC "fleet/google-maps/routes/compute"
        WITH DESTINATION_TOPIC "fleet/google-maps/routes/compute/response"
        WITH METHOD "POST"
        WITH ENDPOINT "/directions/v2:computeRoutes"
        WITH HEADERS
            ADD "Accept" "application/json"
            ADD "User-Agent" "Coreflux-Broker REST_API route (https://www.coreflux.org)"
            ADD "X-Goog-Api-Key" "{value.json.apikey}"
            ADD "X-Goog-FieldMask" "{value.json.fieldmask}"
            ADD "Content-Type" "application/json"
        WITH BODY "{value.json.body}"
    ADD EVENT ComputeRouteMatrix
        WITH SOURCE_TOPIC "fleet/google-maps/routes/matrix"
        WITH DESTINATION_TOPIC "fleet/google-maps/routes/matrix/response"
        WITH METHOD "POST"
        WITH ENDPOINT "/distanceMatrix/v2:computeRouteMatrix"
        WITH HEADERS
            ADD "Accept" "application/json"
            ADD "User-Agent" "Coreflux-Broker REST_API route (https://www.coreflux.org)"
            ADD "X-Goog-Api-Key" "{value.json.apikey}"
            ADD "X-Goog-FieldMask" "{value.json.fieldmask}"
            ADD "Content-Type" "application/json"
        WITH BODY "{value.json.body}"

Deploy it with -addRoute (do not include ADD METADATA).

Usage example

Call ComputeRoutes by publishing a JSON payload to its request topic, and read the reply on the response topic:

mosquitto_sub -t 'fleet/google-maps/routes/compute/response' &
mosquitto_pub -t 'fleet/google-maps/routes/compute' -m '{"apikey": "<apikey>", "body": {}, "fieldmask": "<fieldmask>"}'

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Overview

Auth

Template parameters

Events

Deploy

Usage example

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​Deploy

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Overview

Auth

Template parameters

Events

Deploy

Usage example

Related