Locking... about ergo

[halturin]

Hi, sorry for delay with answer.

I'm happy to hear that this project is useful and can be a painkiller for you :). I will try to look it deeper a bit later, but you are welcome to make PR

[ast]

Hi, no problem!

I will look into it and see if I can put together a pull request! So far it's working really great. Probably the best way to integrate golang libraries with erlang.

Maybe now with the introduction of go modules it can also be built as part of a rebar3 application.

[ciyrus]

Hi a small question.

how to convert the int parameters in gen server call
sample call
gen_server:call({examplegs,'test@localhost'}, {getZrange,{num_list_11111111,2}}).

i can get getZrange and num_list_11111111 but {2...) gives error

if i change 2 in to a string then its working
gen_server:call({examplegs,'test@localhost'}, {getZrange,{num_list_11111111,'2'}}).

Call recovered: &runtime.TypeAssertionError{_interface:(*runtime._type)(0x8be3a0), concrete:(*runtime._type)(0x88f380), asserted:(*runtime._type)(0x88e880), missingMethod:""}

please help me on this

[halturin]

@ciyrus could you please show me your implementation of genserver

[ciyrus]

@halturin

Thank You for the reply
Im new to both Go and Erlang. so pls ignore if any mistakes are there

just executing below in Erlang shell
gen_server:call({examplegs,'test@localhost'}, {getZrange}).

in go implementation i'm getting the parameters like below
c := req[0].(etf.Atom)
println(c)

input 1
gen_server:call({examplegs,'test@localhost'}, {getZrange}).

output 1 in go

getZrange

input 2 (changed getZrange to an integer)
gen_server:call({examplegs,'test@localhost'}, {100}).

output 2 in go
Call recovered: &runtime.TypeAssertionError{_interface:(*runtime._type)(0x8be3a0), concrete:(*runtime._type)(0x88f380), asserted:(*runtime._type)(0x88e880), missingMethod:""}

[halturin]

The reason of this behavior due to this line

c := req[0].(etf.Atom)

It's expected an atom, not an integer.

[ciyrus]

Can u please guide how to convert it to integer.
Because I tried following and got the same error
strconv.Atoi
strconv.ParseInt

[halturin]

Please, have a look this example

https://github.com/halturin/ergonode/blob/master/examples/gonode.go

Especially line 48.

[ciyrus]

@halturin

Thanks a lot. found it. need to check the type first... that's what i missed

Once again Thanks a lot

[halturin]

i've just merged a bunch of updates, so its not valid anymore