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SmartThings/Hubitat Portability Library (SHPL)

Portability library for developing code running on both SmartThings and Hubitat

IMPORTANT - READ FIRST!

In both the SmartThings and the Hubitat development environments, state variables cannot be referenced in the metadata{} sections of an Application or a Device Handler. For this reason, the library implements two different approaches to figurring out and providing the current Hub Platform that code is running on. This SHPL provides metadata{}-safe calls that can be used anywhere (at a high overhead), and calls that can only be used in the runtime (which are relatively efficient on both platforms).

When using this library, getHubPlatform() MUST be called from the installed() method before accessing the state variables. Then you can use state.hubPlatform, state.isST and state.isHE in your runtime code.

Note also that you only need to insert the text between the two lines of asterisks into your code - the rest is just comments.

metadata{}-safe calls

The following 3 calls are safe to use anywhere within a Device Handler or Application

• these can be called (e.g., if (getPlatform() == 'SmartThings'), or referenced (i.e., if (platform == 'Hubitat') )
• performance of the non-native platform is horrendous, so it is best to use these only in the metadata{} section of a Device Handler or Application

private String  getPlatform() { (physicalgraph?.device?.HubAction ? 'SmartThings' : 'Hubitat') }	// if (platform == 'SmartThings') ...
private Boolean getIsST()     { (physicalgraph?.device?.HubAction ? true : false) }					// if (isST) ...
private Boolean getIsHE()     { (hubitat?.device?.HubAction ? true : false) }						// if (isHE) ...

runtime code-only calls

The following 3 calls are ONLY for use within the Device Handler or Application runtime

• they will throw an error at compile time if used within metadata, usually complaining that "state" is not defined
• getHubPlatform() MUST be called from the installed() method, then use "state.hubPlatform" elsewhere
• "if (state.isST)" is more efficient than "if (isSTHub)"

private String getHubPlatform() {
    if (state?.hubPlatform == null) {
        state.hubPlatform = getPlatform()						// if (hubPlatform == 'Hubitat') ... or if (state.hubPlatform == 'SmartThings')...
        state.isST = state.hubPlatform.startsWith('S')			// if (state.isST) ...
        state.isHE = state.hubPlatform.startsWith('H')			// if (state.isHE) ...
    }
    return state.hubPlatform
}
private Boolean getIsSTHub() { (state.isST) }					// if (isSTHub) ...
private Boolean getIsHEHub() { (state.isHE) }					// if (isHEHub) ...

Tips & Tricks

Follows some tips and examples of how to apply SHPL to build portable code

sendHubCommand(hubAction) example:

def example() {
    def hubAction
    if (state.isST) {
        hubAction = physicalgraph.device.HubAction.newInstance(
            method: 'GET',
            path: '/cgi-bin/template.cgi',
            headers: [ HOST: "${settings.meteoIP}:${settings.meteoPort}", 'Authorization': state.userpass, 'Accept': 'application/json,text/json', 'Content-Type': 'application/json', 'Accept-Charset': 'utf-8,iso-8859-1' ],
            query: ['template': "{\"timestamp\":${now()},\"version\":[mbsystem-swversion:1.0]," + (yesterday ? yesterdayTemplate : state.meteoTemplate), 'contenttype': 'application/json' ],
            null,
            [callback: hubActionCallback]
        )
    } else {
        hubAction = hubitat.device.HubAction.newInstance(
            method: 'GET',
            path: '/cgi-bin/template.cgi',
            headers: [ HOST: "${settings.meteoIP}:${settings.meteoPort}", 'Authorization': state.userpass, 'Accept': 'text/json,application/json', 'Content-Type': 'text/json', 'Accept-Charset': 'iso-8859-1,utf-8' ],
            query: ['template': "{\"timestamp\":${now()},\"version\":[mbsystem-swversion:1.0]," + (yesterday ? yesterdayTemplate : state.meteoTemplate), 'contenttype': 'text/json' ],
            null,
            [callback: hubActionCallback]
        )
    }
    try {
        sendHubCommand(hubAction)
    } catch (Exception e) {
    	if (debug) log.error "getMeteoWeather() sendHubCommand Exception ${e} on ${hubAction}"
    }
}
def hubActioCallback( hubResponse ) {
	// Note - don't try to define the Class for hubResponse above, as in "def hubActionCallback( physicalgraph.device.hubResponse hubResponse") -- it won't work.
    // Both platforms define hubResponse the same, so you don't need to classify it, just use as defined: hubResponse.status, hubResponse.json, hubResponse.body, etc.
}

asynchttp* & encodeBase64()

def example() {
    def userpassascii = meteoUser + ':' + meteoPassword
	if (state.isST) {
    	state.userpass = "Basic " + userpassascii.encodeAsBase64().toString()
    } else {
    	state.userpass = "Basic " + userpassascii.bytes.encodeBase64().toString()
    }
	String excludes = 'sources,minutely,daily,flags'
    String units = getTemperatureScale() == 'F' ? 'us' : (speed_units=='speed_kph' ? 'ca' : 'uk2')
    def apiRequest = [
        uri : "https://api.darksky.net",
        path : "/forecast/${settings.darkSkyKey}/${location.latitude},${location.longitude}",
        query : [ exclude : excludes, units : units ],
        contentType : "application/json"
    ]
    if (state.isST) {
    	include 'asynchttp_v1'
    	asynchttp_v1.get( asyncCallback, apiRequest )
    } else {
    	asynchttpGet( asyncCallback, apiRequest )
    }
}
def asyncCallback(response, data) {
	// do stuff
}