The revision field is only populated on dev builds so this means
most releases of Terraform have an empty "terraform_revision" field
in the JSON output. Since we recommend developers use go tooling
to `go build` this tool when developing, the revision is not useful
data and so it is removed.
We're still using vendoring for now until we get _all_ of our tooling
updated, so the main idea here is to force use of the vendor directory
when running tests and building for development so we can quickly find
situations where we forget to run "go mod vendor".
We also setting GO111MODULE=off for installation of tools. Right now this
is the best way to install a tool in GOBIN without also interfering with
go.mod and go.sum, until a better pattern for managing tool dependencies
is devised by the Go team.
Finally, we run "go mod download" before launching "gox" in the main
build process, to prime the local module cache once so that the concurrent
"go build" processes won't race to populate it redundantly. This means
that we'll be producing final builds from the module cache rather than
from vendor as with everything else -- there's currently no way to tell
gox to use -mod=vendor -- but that should be fine in practice since
our go.sum file will ensure that we get the exact sources we expect in
the module cache before building.
This patch allows `build.sh` to be used with terraform plugins to
easily create cross-platform packages, using the same method as the
terraform Makefile:
```
mkdir scripts
curl https://raw.githubusercontent.com/hashicorp/terraform/master/scripts/build.sh -o scripts/build.sh
TF_RELEASE=1 sh -c "scripts/build.sh" # make bin
```
Instead of using a hardcoded version prerelease string, which makes release automation difficult, set the version prerelease string from an environment variable via the go linker tool during compile time.
The environment variable `TF_RELEASE` should only be set via the `make bin` target, and thus leaves the version prerelease string unset. Otherwise, when running a local compile of terraform via the `make dev` makefile target, the version prerelease string is set to `"dev"`, as usual.
This also requires some changes to both the circonus and postgresql providers, as they directly used the `VersionPrerelease` constant. We now simply call the `VersionString()` function, which returns the proper interpolated version string with the prerelease string populated correctly.
`TF_RELEASE` is unset:
```sh
$ make dev
==> Checking that code complies with gofmt requirements...
go generate $(go list ./... | grep -v /terraform/vendor/)
2017/05/22 10:38:19 Generated command/internal_plugin_list.go
==> Removing old directory...
==> Building...
Number of parallel builds: 3
--> linux/amd64: github.com/hashicorp/terraform
==> Results:
total 209M
-rwxr-xr-x 1 jake jake 209M May 22 10:39 terraform
$ terraform version
Terraform v0.9.6-dev (fd472e4a86500606b03c314f70d11f2bc4bc84e5+CHANGES)
```
`TF_RELEASE` is set (mimicking the `make bin` target):
```sh
$ TF_RELEASE=1 make dev
==> Checking that code complies with gofmt requirements...
go generate $(go list ./... | grep -v /terraform/vendor/)
2017/05/22 10:40:39 Generated command/internal_plugin_list.go
==> Removing old directory...
==> Building...
Number of parallel builds: 3
--> linux/amd64: github.com/hashicorp/terraform
==> Results:
total 121M
-rwxr-xr-x 1 jake jake 121M May 22 10:42 terraform
$ terraform version
Terraform v0.9.6
```
Allows specifying `LD_FLAGS` during development builds.
```
$ LD_FLAGS="-linkmode=external" make dev
```
Since the version of DTrace on macOS Sierra (On the public beta's at least) has been updated, this allows DTrace to run on Terraform during development/debugging.
```
$ sudo dtrace -n 'pid$target::main.main:entry' -c "terraform apply"
dtrace: description 'pid$target::main.main:entry' matched 1 probe
Apply complete! Resources: 0 added, 0 changed, 0 destroyed.
Outputs:
foo = bar
dtrace: pid 23096 has exited
CPU ID FUNCTION:NAME
2 265673 main.main:entry
```
Also redirects the `@which stringer` command inside the `generate` Makefile target to `/dev/null` so we stop echoing the path to the `stringer` binary on every call to `generate`.
Doing a straight `./...` build results in errors from unvendored
package references being picked up in some vendored libraries'
`examples/` subdirs.
So we'll switch to the recommended `go list | grep -v /vendor/` strategy
to determine what to build.
* Remove `make updatedeps` from Travis build. We'll follow up with more
specific plans around dependency updating in subsequent PRs.
* Update all `make` targets to set `GO15VENDOREXPERIMENT=1` and to
filter out `/vendor/` from `./...` where appropriate.
* Temporarily remove `vet` from the `make test` target until we can
figure out how to get it to not vet `vendor/`. (Initial
experimentation failed to yield the proper incantation.)
Everything is pinned to current master, with the exception of:
* Azure/azure-sdk-for-go which is pinned before the breaking change today
* aws/aws-sdk-go which is pinned to the most recent tag
The documentation still needs to be updated, which we can do in a follow
up PR. The goal here is to unblock release.
If GOPATH/bin doesn't exists the build scripts just exists, leaving the
`terraform/bin` folder with only one single binary called `terraform`.
Discovered while setting up a new GOPATH just for terraform.
For now, make dev creates in ${MAIN_GOPATH}/bin/ files like 'provider-google' alongside with 'terraform-provider-google'.
If we decided to build plugins with custom names and install them manually with 'cp' command, it could make sense not to do it here.
