develop serverside nodes

[hidetak]

This is an implementation of the server-side node described in the following Issue.
#25

The following modifications are also implemented for the client side.

• modified to use node-wot 0.8.10
• read property node execution is now triggered by input
• Wait until the observe property and subscribe event execution succeeds

[egekorkan]

We discussed this in the call and @egekorkan will try using them on his computer. Then we can merge it and then move to the Eclipse Thingweb.

The issues in node-wot are:

• No response from MQTT Binding readProperty method eclipse-thingweb/node-wot#1241
• Calling HttpServer's stop method in binding-http returns nothing eclipse-thingweb/node-wot#1237
• Error when performing observeProperty with binding-coap eclipse-thingweb/node-wot#1233

We can merge this PR without fixing those first.

[danielpeintner]

• modified to use node-wot 0.8.10

Minor: there is already node-wot v0.8.12 out. Updating to it shouldn't cause any issue since there are no API changes or such. Thanks!

[egekorkan]

Small changes but overall, it is working. I just didn't manage to get the property on the server side working. I have just put the following in the function attached to the property:

@hidetak how can I make it work? I get an empty payload when I read the property.

Overall, thank you many times for doing this work! You even have Japanese UI elements that will make Thingweb project international ;)

[hidetak]

@danielpeintner

Thank you for your comment.
I have changed the version of node-wot to 0.8.12.

[hidetak]

@egekorkan

Thank you for your confirmation.

The input of a Server-Property node is done when there is a change to that property on the server side. At this time, it is not necessary to input the changed value.

The value returned to the client must be obtained by a flow connected to the first output of the Server-Property node and input to the Server-End node.

The value of the write is output from the second output of the Server-Property node, so the connected flow should process that value and the end should connect the Server-End node.

If you have any other questions, please feel free to ask.

Overall, thank you many times for doing this work! You even have Japanese UI elements that will make Thingweb project international ;)

I am glad to hear you say so.
I hope to take the next step to internationalize the client side as well.
If there are any odd English words, I would appreciate it if you could point them out to me.

[egekorkan]

@hidetak I have done the same thing once again and it worked, so I am sorry for the first comment about readproperty. I will now check the english and make commits if I see issues. If not, we can merge it and move to its new place

[egekorkan]

I made some small changes and it is looking good. Merging.

When moving to Eclipse, I will try to follow https://www.johno.com/move-directory-between-repos-with-git-history so that the contributors are credited correctly. I hope it works otherwise it would look as if I did all the work.

[hidetak]

@egekorkan

I made some small changes and it is looking good. Merging.

Thank you for the correction and merge.

[egekorkan]

In the end, I have used the instructions at https://gist.github.com/trongthanh/2779392