Using internal examples instead of remote ones

[lmnzx]

This is the entire output when I try to run the main.go file.

❯ go run main.go serve --verbose
skipping Query.getSunDailyForecastByGeocode field respose, not an integer: default
skipping Query.getSunDailyForecastByLocation field respose, not an integer: default
2021/02/17 20:16:36 loaded previously stored schema: upstreams/anilist.graphql
2021/02/17 20:16:36 downloading schema for upstream pokemon: https://graphql-pokemon.now.sh
2021/02/17 20:16:36 download failed: unexpected end of JSON input
2021/02/17 20:16:36 loaded previously stored schema: upstreams/weather.graphql
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x18 pc=0x9dfcfa]

goroutine 1 [running]:
github.com/aerogear/graphql-link/internal/gateway.getSelectedFields(0x0, 0xc001037140, 0xc001249170, 0x0, 0x0, 0xc000288188, 0x0, 0x1)
/home/snxk/Projects/graphql-link/internal/gateway/gateway.go:330 +0x3a
github.com/aerogear/graphql-link/internal/gateway.mount(0xc0001132d0, 0xc000282de0, 0xc000282c00, 0xc00029a320, 0xc000296288, 0x7, 0x0, 0x0, 0x0, 0x0, ...)
/home/snxk/Projects/graphql-link/internal/gateway/mount.go:81 +0xc9
github.com/aerogear/graphql-link/internal/gateway.actionRunner.mount(0xc0001132d0, 0xc000282de0, 0xc000282c00, 0xc00029a320, 0xc00028ca00, 0x0, 0x0)
/home/snxk/Projects/graphql-link/internal/gateway/mount.go:34 +0x19e
github.com/aerogear/graphql-link/internal/gateway.New(0xbc6db5, 0x1, 0xc0000cf630, 0x100, 0xc0002826f0, 0x0, 0xc000290300, 0x3, 0x3, 0x0, ...)
/home/snxk/Projects/graphql-link/internal/gateway/gateway.go:176 +0x826
github.com/aerogear/graphql-link/internal/cmd/serve.mountGatewayOnHttpServer(0xc000290400, 0xc, 0x13362a0)
/home/snxk/Projects/graphql-link/internal/cmd/serve/cmd.go:223 +0x7e
github.com/aerogear/graphql-link/internal/cmd/serve.startServer(0xc000290400, 0xc000290400, 0x0)
/home/snxk/Projects/graphql-link/internal/cmd/serve/cmd.go:198 +0x9f
github.com/aerogear/graphql-link/internal/cmd/serve.run(0x16e8420, 0xc000286100, 0x0, 0x1)
/home/snxk/Projects/graphql-link/internal/cmd/serve/cmd.go:80 +0xe5
github.com/spf13/cobra.(*Command).execute(0x16e8420, 0xc0002860f0, 0x1, 0x1, 0x16e8420, 0xc0002860f0)
/home/snxk/go/pkg/mod/github.com/spf13/cobra@v1.0.0/command.go:846 +0x2c2
github.com/spf13/cobra.(*Command).ExecuteC(0x16e8180, 0xa5d12a, 0x0, 0x16e86c0)
/home/snxk/go/pkg/mod/github.com/spf13/cobra@v1.0.0/command.go:950 +0x375
github.com/spf13/cobra.(*Command).Execute(...)
/home/snxk/go/pkg/mod/github.com/spf13/cobra@v1.0.0/command.go:887
github.com/aerogear/graphql-link/internal/cmd/root.Main()
/home/snxk/Projects/graphql-link/internal/cmd/root/cmd.go:35 +0x3f
github.com/aerogear/graphql-link/internal/cmd.Main(...)
/home/snxk/Projects/graphql-link/internal/cmd/cmd.go:18
main.main()
/home/snxk/Projects/graphql-link/main.go:13 +0xad
exit status 2

[ankithans]

@snxk
2021/02/17 20:16:36 downloading schema for upstream pokemon: https://graphql-pokemon.now.sh
Actually, I also tried using it and this GraphQL Endpoint https://graphql-pokemon.now.sh doesn't exist now!
That's why it's throwing the error ig!

[lmnzx]

@ankithans you are right, I changed it to a working API and it works perfectly. Can the default graphql-link.yaml be changed to avoid the issues?

[wtrocki]

@ankithans Amazing! Yes. API's come and go.
I think we can either

1. look for other API's to have as an example
2. Use something like graphql-serve to create graphql API on the fly
3. use examples (we probably need to bring examples outside the internal directory and have separate builds)

GraphQL-serve is done in node.js which will require an extra stack.
Other API can also go down.
My personal take is to have separate example server API build and use it in examples.

[wtrocki]

@snxk This is why I asked to create the issue.
We can have a good conversation and see if we can take some path forward.

I think design uses an internal folder but I would not actually make things internal here and let examples to reuse some of the elements:
https://github.com/aerogear/graphql-link/tree/master/internal/gateway/examples

[ankithans]

yeah @wtrocki, so we need to deploy an example graphql server (while using the above elements), right?

[lmnzx]

we can have a graphql server with mock data on a Heroku free tier, as an example.

[wtrocki]

no need to deploy. someone can run it on local machine.

additional problem is that if your api doesnt work error message is not great:

2021/02/17 20:16:36 download failed: unexpected end of JSON input

[ankithans]

Okay, will work on the example first!

[wtrocki]

Yep. This is good to learn golang as well.

[ankithans]

yes, will learn while implementing!