Writing a custom provider

[Jack Bruno]

Hello,

I am trying to write a custom provider using the tutorial found here https://hashicorp.com/blog/terraform-custom-providers.html

I am getting an error on the first build step.

go build -o terraform-provider-vcd

Here is the output.

/dropbox/go/src/github.com/jzbruno/terraform-provider-vcd$ go build -o terraform-provider-vcd
# github.com/hashicorp/terraform/config
/dropbox/go/src/github.com/hashicorp/terraform/config/expr_lex.go:25: undefined: exprSymType
/dropbox/go/src/github.com/hashicorp/terraform/config/expr_lex.go:41: undefined: COMMA
/dropbox/go/src/github.com/hashicorp/terraform/config/expr_lex.go:43: undefined: LEFTPAREN
/dropbox/go/src/github.com/hashicorp/terraform/config/expr_lex.go:45: undefined: RIGHTPAREN
/dropbox/go/src/github.com/hashicorp/terraform/config/expr_lex.go:53: undefined: exprSymType
/dropbox/go/src/github.com/hashicorp/terraform/config/expr_lex.go:80: undefined: IDENTIFIER
/dropbox/go/src/github.com/hashicorp/terraform/config/expr_lex.go:83: undefined: exprSymType
/dropbox/go/src/github.com/hashicorp/terraform/config/expr_lex.go:103: undefined: STRING
/dropbox/go/src/github.com/hashicorp/terraform/config/expr_parse.go:25: undefined: exprParse
/dropbox/go/src/github.com/jzbruno/terraform-provider-vcd$

Any ideas on what I am missing? Source can be found here https://github.com/jzbruno/terraform-provider-vcd

[Mitchell Hashimoto]

Jack,

Go to $GOPATH/github.com/hashicorp/terraform and run `make`. This
should fix all this.

The issue is that the parser that is generated is not generated yet.

Best,
Mitchell

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[Jack Bruno]

Mitchell,

Thanks. That got me past the first error but brought up a few questions.

1. I had to "go get" a bunch of dependencies for the make to work. Is this normal? Is there a cleaner way to pull down all of them?

2. I got the following error on my provider build. Is the tutorial outdated? It appears that plugin.Serve is not meant to be used as the tutorial shows.

/dropbox/go/src/github.com/jzbruno/terraform-provider-vcd/main.go:8: cannot use Provider() (type *schema.Provider) as type *plugin.ServeOpts in argument to plugin.Serve

Jack

[Jack Bruno]

OK.

1. Found the development instructions in the repo readme. https://github.com/hashicorp/terraform#developing-terraform
2. From searches I gather this changed after 0.2.2. Need to pass ServerOpts with a ProviderFunc.

Jack

[Bill Wanjohi]

If anyone else runs into Jack's second problem, I followed his lead, found https://github.com/whitepages/terraform-provider-dummy, and got my dummy running with the changes shown in this patch:

diff --git a/main.go b/main.go

index dfc33ec..5ecf31e 100644

--- a/main.go

+++ b/main.go

@@ -2,8 +2,13 @@ package main

 import (

        "github.com/hashicorp/terraform/plugin"

+       "github.com/hashicorp/terraform/terraform"

 )

 func main() {

-       plugin.Serve(Provider())

+       plugin.Serve(&plugin.ServeOpts{

+               ProviderFunc: func() terraform.ResourceProvider {

+                       return Provider()

+               },

+       })

 }

diff --git a/provider.go b/provider.go

index 97757db..fed15c8 100644

--- a/provider.go

+++ b/provider.go

@@ -2,9 +2,10 @@ package main

 import (

        "github.com/hashicorp/terraform/helper/schema"

+       "github.com/hashicorp/terraform/terraform"

 )

-func Provider() *schema.Provider {

+func Provider() terraform.ResourceProvider {

        return &schema.Provider{

                ResourcesMap: map[string]*schema.Resource{},