## Changes
There are a couple places throughout the code base where interaction
with environment variables takes place. Moreover, more than one of these
would try to read a value from more than one environment variable as
fallback (for backwards compatibility). This change consolidates those
accesses.
The majority of diffs in this change are mechanical (i.e. add an
argument or replace a call).
This change:
* Moves common environment variable lookups for bundles to
`bundles/env`.
* Adds a `libs/env` package that wraps `os.LookupEnv` and `os.Getenv`
and allows for overrides to take place in a `context.Context`. By
scoping overrides to a `context.Context` we can avoid `t.Setenv` in
testing and unlock parallel test execution for integration tests.
* Updates call sites to pass through a `context.Context` where needed.
* For bundles, introduces `DATABRICKS_BUNDLE_ROOT` as new primary
variable instead of `BUNDLE_ROOT`. This was the last environment
variable that did not use the `DATABRICKS_` prefix.
## Tests
Unit tests pass.
## Changes
Before:
```
Usage:
databricks instance-pools [command]
Available Commands:
create Create a new instance pool.
delete Delete an instance pool.
edit Edit an existing instance pool.
get Get instance pool information.
get-permission-levels Get instance pool permission levels.
get-permissions Get instance pool permissions.
list List instance pool info.
set-permissions Set instance pool permissions.
update-permissions Update instance pool permissions.
```
After:
```
Usage:
databricks instance-pools [command]
Available Commands
create Create a new instance pool.
delete Delete an instance pool.
edit Edit an existing instance pool.
get Get instance pool information.
list List instance pool info.
Permission Commands
get-permission-levels Get instance pool permission levels.
get-permissions Get instance pool permissions.
set-permissions Set instance pool permissions.
update-permissions Update instance pool permissions.
```
## Tests
Manual.
## Changes
This removes the remaining dependency on global state and unblocks work
to parallelize integration tests. As is, we can already uncomment an
integration test that had to be skipped because of other tests tainting
global state. This is no longer an issue.
Also see #595 and #606.
## Tests
* Unit and integration tests pass.
* Manually confirmed the help output is the same.
## Changes
Generated commands relied on global variables for flags and request
payloads. This is difficult to test if a sequence of tests tries to run
the same command with various arguments because the global state causes
test interference. Moreover, it is impossible to run tests in parallel.
This change modifies the approach and turns every command group and
command itself into a function that returns a `*cobra.Command`. All
flags and request payloads are variables scoped to the command's
initialization function. This means it is possible to construct
independent copies of the CLI structure and fixes the test isolation
issue.
The scope of this change is only the generated commands. The other
commands will be changed accordingly in subsequent changes.
## Tests
Unit and integration tests pass.
Andrew Nester
Serge Smertin
Pieter Noordhuis