[Ovmsdev] Open Charge Map

Lee Howard lee.howard at mainpine.com
Thu May 22 01:04:59 HKT 2014

Hello Mark, Chris, and other OVMS users and developers...

I am happy with all of Mark's outline with only one point for debate. 
Admittedly, I am new to OpenChargeMap API and OVMS programming, and so 
maybe I simply don't understand how things work, but...

As the OVMS server will be performing the OpenChargeMap API on behalf of 
the partner instead of the portable app performing the OpenChargeMap API 
(more-directly in the control of the partner)... is it really necessary 
for the OVMS server to masquerade as the partner... using their identity 
for authentication with OpenChargeMap?

I'd prefer to avoid requiring the user to set-up an independent account 
with OpenChargeMap and then permit OVMS to operate on behalf of that 
newly-created account. Could not the OVMS server simply use its own 
account (for everyone) and simply provide an information field about the 
identification of the OVMS user?

My primary interest here is in making it as simple as possible for the 
OVMS user to opt-in. Requiring them to sign up with OpenChargeMap and 
provide a PIN or key from the account is an additional step that will 
prove to be a barrier for users that are willing to opt-in as long as it 
is merely as easy as a button-press.



On 05/21/2014 04:12 AM, Christopher Cook wrote:
> ....[snip]....
> One option I'm pondering is for apps to be able to request the OCM 
> Session Token just by supplying a PIN code and Username to the API, 
> the user would need to go to the OCM website to generate the pin code 
> (and conform the expected Username for it to work) probably by 
> starting a certain OCM url with an API Key specific to OVMS.
> ....[/snip]....
> On 21/05/2014 15:23, Kevin Sharpe wrote:
>> FYI, I’ve asked Lee Howard from Mainpine to take a look at this in 
>> detail.
>> Kevin Sharpe | Founder & Patron | Zero Carbon World is a UK 
>> Registered Charity #1141347
>> From: Mark Webb-Johnson <mark at webb-johnson.net 
>> <mailto:mark at webb-johnson.net>>
>> Reply-To: OVMS Developers <ovmsdev at lists.teslaclub.hk 
>> <mailto:ovmsdev at lists.teslaclub.hk>>
>> Date: Wednesday, 21 May 2014 07:19
>> To: OVMS Developers <ovmsdev at lists.teslaclub.hk 
>> <mailto:ovmsdev at lists.teslaclub.hk>>
>> Subject: Re: [Ovmsdev] Open Charge Map
>> Here is an email with a proposal / suggest I sent out last year. This 
>> would be wonderful to do, just limited resources to do it with.
>> ....[snip]....
>>     The server will maintain a database of partners, and their API
>>     access keys. This database should allow for PUSH messages (via
>>     HTTP) to the partner. If PUSH is enabled, every time a charging
>>     session is updated (either started or completed), the server will
>>     connect to each partner (in randomised order) and send them the
>>     information for recent charges. The server will also provide an
>>     API to allow partners to PULL messages past a certain date/time
>>     stamp (to allow for periodic synchronisation).
>>     _*Partners*_
>>     Partners would just have to subscribe to the system (signing up
>>     with a user account and being given an API key). They would have
>>     to agree to the license terms, but other than that there would be
>>     no restrictions to partnership.
>>     ....[snip]....

*Lee Howard*
*Mainpine, Inc. Chief Technology Officer*
Tel: +1 866 363 6680 | Fax: +1 360 462 8160
lee.howard at mainpine.com | www.mainpine.com

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