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@ -0,0 +1,202 @@
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2
cmd/drone-helm/main.go
View file

@ -27,7 +27,7 @@ func main() {
// Expect the plan to go off the rails
if err != nil {
fmt.Fprintf(os.Stderr, err.Error())
fmt.Fprintf(os.Stderr, "%s\n", err.Error())
// Throw away the plan
os.Exit(1)
}

8
docs/parameter_reference.md
View file

@ -4,10 +4,10 @@
| Param name | Type | Purpose |
|---------------------|-----------------|---------|
| helm_command | string | Indicates the operation to perform. Recommended, but not required. Valid options are `upgrade`, `uninstall`, `lint`, and `help`. |
| update_dependencies | boolean | Calls `helm dependency update` before running the main command. **Not currently implemented**; see [#25](https://github.com/pelotech/drone-helm3/issues/25).|
| helm_repos | list\<string\> | Calls `helm repo add $repo` before running the main command. Each string should be formatted as `repo_name=https://repo.url/`. **Not currently implemented**; see [#26](https://github.com/pelotech/drone-helm3/issues/26). |
| update_dependencies | boolean | Calls `helm dependency update` before running the main command.|
| helm_repos | list\<string\> | Calls `helm repo add $repo` before running the main command. Each string should be formatted as `repo_name=https://repo.url/`. |
| namespace | string | Kubernetes namespace to use for this operation. |
| prefix | string | Expect environment variables to be prefixed with the given string. For more details, see "Using the prefix setting" below. **Not currently implemented**; see [#19](https://github.com/pelotech/drone-helm3/issues/19). |
| prefix | string | Expect environment variables to be prefixed with the given string. For more details, see "Using the prefix setting" below. |
| debug | boolean | Generate debug output within drone-helm3 and pass `--debug` to all helm commands. Use with care, since the debug output may include secrets. |
## Linting
@ -58,6 +58,7 @@ Uninstallations are triggered when the `helm_command` setting is "uninstall" or
| dry_run | boolean | | Pass `--dry-run` to `helm uninstall`. |
| timeout | duration | | Timeout for any *individual* Kubernetes operation. The uninstallation's full runtime may exceed this duration. |
| skip_tls_verify | boolean | | Connect to the Kubernetes cluster without checking for a valid TLS certificate. Not recommended in production. |
| chart | string | | Required when the global `update_dependencies` parameter is true. No effect otherwise. |
### Where to put settings
@ -67,6 +68,7 @@ Any setting (with the exception of `prefix`; [see below](#user-content-using-the
* Booleans can be yaml's `true` and `false` literals or the strings `"true"` and `"false"`.
* Durations are strings formatted with the syntax accepted by [golang's ParseDuration function](https://golang.org/pkg/time/#ParseDuration) (e.g. 5m30s)
* For backward-compatibility with drone-helm, a duration can also be an integer, in which case it will be interpreted to mean seconds.
* List\<string\>s can be a yaml sequence or a comma-separated string.
All of the following are equivalent:

9
internal/helm/config.go
View file

@ -4,8 +4,11 @@ import (
"fmt"
"github.com/kelseyhightower/envconfig"
"io"
"regexp"
)
var justNumbers = regexp.MustCompile(`^\d+$`)
// The Config struct captures the `settings` and `environment` blocks in the application's drone
// config. Configuration in drone's `settings` block arrives as uppercase env vars matching the
// config key, prefixed with `PLUGIN_`. Config from the `environment` block is uppercased, but does
@ -15,7 +18,7 @@ type Config struct {
Command string `envconfig:"HELM_COMMAND"` // Helm command to run
DroneEvent string `envconfig:"DRONE_BUILD_EVENT"` // Drone event that invoked this plugin.
UpdateDependencies bool `split_words:"true"` // Call `helm dependency update` before the main command
Repos []string `envconfig:"HELM_REPOS"` // Call `helm repo add` before the main command
AddRepos []string `envconfig:"HELM_REPOS"` // Call `helm repo add` before the main command
Prefix string `` // Prefix to use when looking up secret env vars
Debug bool `` // Generate debug output and pass --debug to all helm commands
Values string `` // Argument to pass to --set in applicable helm commands
@ -62,6 +65,10 @@ func NewConfig(stdout, stderr io.Writer) (*Config, error) {
}
}
if justNumbers.MatchString(cfg.Timeout) {
cfg.Timeout = fmt.Sprintf("%ss", cfg.Timeout)
}
if cfg.Debug && cfg.Stderr != nil {
cfg.logDebug()
}

7
internal/helm/config_test.go
View file

@ -106,6 +106,13 @@ func (suite *ConfigTestSuite) TestNewConfigWithConflictingVariables() {
suite.Equal("2m30s", cfg.Timeout)
}
func (suite *ConfigTestSuite) TestNewConfigInfersNumbersAreSeconds() {
suite.setenv("PLUGIN_TIMEOUT", "42")
cfg, err := NewConfig(&strings.Builder{}, &strings.Builder{})
suite.Require().NoError(err)
suite.Equal("42s", cfg.Timeout)
}
func (suite *ConfigTestSuite) TestNewConfigSetsWriters() {
stdout := &strings.Builder{}
stderr := &strings.Builder{}

43
internal/helm/plan.go
View file

@ -74,7 +74,7 @@ func determineSteps(cfg Config) *func(Config) []Step {
case "delete":
return &uninstall
default:
panic("not implemented")
return &help
}
}
}
@ -96,7 +96,10 @@ func (p *Plan) Execute() error {
var upgrade = func(cfg Config) []Step {
steps := initKube(cfg)
steps = append(steps, addRepos(cfg)...)
if cfg.UpdateDependencies {
steps = append(steps, depUpdate(cfg)...)
}
steps = append(steps, &run.Upgrade{
Chart: cfg.Chart,
Release: cfg.Release,
@ -113,6 +116,9 @@ var upgrade = func(cfg Config) []Step {
var uninstall = func(cfg Config) []Step {
steps := initKube(cfg)
if cfg.UpdateDependencies {
steps = append(steps, depUpdate(cfg)...)
}
steps = append(steps, &run.Uninstall{
Release: cfg.Release,
DryRun: cfg.DryRun,
@ -122,15 +128,21 @@ var uninstall = func(cfg Config) []Step {
}
var lint = func(cfg Config) []Step {
lint := &run.Lint{
Chart: cfg.Chart,
steps := addRepos(cfg)
if cfg.UpdateDependencies {
steps = append(steps, depUpdate(cfg)...)
}
steps = append(steps, &run.Lint{
Chart: cfg.Chart,
})
return []Step{lint}
return steps
}
var help = func(cfg Config) []Step {
help := &run.Help{}
help := &run.Help{
HelmCommand: cfg.Command,
}
return []Step{help}
}
@ -147,3 +159,22 @@ func initKube(cfg Config) []Step {
},
}
}
func addRepos(cfg Config) []Step {
steps := make([]Step, 0)
for _, repo := range cfg.AddRepos {
steps = append(steps, &run.AddRepo{
Repo: repo,
})
}
return steps
}
func depUpdate(cfg Config) []Step {
return []Step{
&run.DepUpdate{
Chart: cfg.Chart,
},
}
}

86
internal/helm/plan_test.go
View file

@ -167,7 +167,28 @@ func (suite *PlanTestSuite) TestUpgrade() {
suite.Equal(expected, upgrade)
}
func (suite *PlanTestSuite) TestDel() {
func (suite *PlanTestSuite) TestUpgradeWithUpdateDependencies() {
cfg := Config{
UpdateDependencies: true,
}
steps := upgrade(cfg)
suite.Require().Equal(3, len(steps), "upgrade should have a third step when DepUpdate is true")
suite.IsType(&run.InitKube{}, steps[0])
suite.IsType(&run.DepUpdate{}, steps[1])
}
func (suite *PlanTestSuite) TestUpgradeWithAddRepos() {
cfg := Config{
AddRepos: []string{
"machine=https://github.com/harold_finch/themachine",
},
}
steps := upgrade(cfg)
suite.Require().True(len(steps) > 1, "upgrade should generate at least two steps")
suite.IsType(&run.AddRepo{}, steps[1])
}
func (suite *PlanTestSuite) TestUninstall() {
cfg := Config{
KubeToken: "b2YgbXkgYWZmZWN0aW9u",
SkipTLSVerify: true,
@ -205,6 +226,16 @@ func (suite *PlanTestSuite) TestDel() {
suite.Equal(expected, actual)
}
func (suite *PlanTestSuite) TestUninstallWithUpdateDependencies() {
cfg := Config{
UpdateDependencies: true,
}
steps := uninstall(cfg)
suite.Require().Equal(3, len(steps), "uninstall should have a third step when DepUpdate is true")
suite.IsType(&run.InitKube{}, steps[0])
suite.IsType(&run.DepUpdate{}, steps[1])
}
func (suite *PlanTestSuite) TestInitKube() {
cfg := Config{
KubeToken: "cXVlZXIgY2hhcmFjdGVyCg==",
@ -231,6 +262,41 @@ func (suite *PlanTestSuite) TestInitKube() {
suite.Equal(expected, init)
}
func (suite *PlanTestSuite) TestDepUpdate() {
cfg := Config{
UpdateDependencies: true,
Chart: "scatterplot",
}
steps := depUpdate(cfg)
suite.Require().Equal(1, len(steps), "depUpdate should return one step")
suite.Require().IsType(&run.DepUpdate{}, steps[0])
update, _ := steps[0].(*run.DepUpdate)
expected := &run.DepUpdate{
Chart: "scatterplot",
}
suite.Equal(expected, update)
}
func (suite *PlanTestSuite) TestAddRepos() {
cfg := Config{
AddRepos: []string{
"first=https://add.repos/one",
"second=https://add.repos/two",
},
}
steps := addRepos(cfg)
suite.Require().Equal(2, len(steps), "addRepos should add one step per repo")
suite.Require().IsType(&run.AddRepo{}, steps[0])
suite.Require().IsType(&run.AddRepo{}, steps[1])
first := steps[0].(*run.AddRepo)
second := steps[1].(*run.AddRepo)
suite.Equal(first.Repo, "first=https://add.repos/one")
suite.Equal(second.Repo, "second=https://add.repos/two")
}
func (suite *PlanTestSuite) TestLint() {
cfg := Config{
Chart: "./flow",
@ -245,6 +311,24 @@ func (suite *PlanTestSuite) TestLint() {
suite.Equal(want, steps[0])
}
func (suite *PlanTestSuite) TestLintWithUpdateDependencies() {
cfg := Config{
UpdateDependencies: true,
}
steps := lint(cfg)
suite.Require().Equal(2, len(steps), "lint should have a second step when DepUpdate is true")
suite.IsType(&run.DepUpdate{}, steps[0])
}
func (suite *PlanTestSuite) TestLintWithAddRepos() {
cfg := Config{
AddRepos: []string{"friendczar=https://github.com/logan_pierce/friendczar"},
}
steps := lint(cfg)
suite.Require().True(len(steps) > 0, "lint should return at least one step")
suite.IsType(&run.AddRepo{}, steps[0])
}
func (suite *PlanTestSuite) TestDeterminePlanUpgradeCommand() {
cfg := Config{
Command: "upgrade",

52
internal/run/addrepo.go Normal file
View file

@ -0,0 +1,52 @@
package run
import (
"fmt"
"strings"
)
// AddRepo is an execution step that calls `helm repo add` when executed.
type AddRepo struct {
Repo string
cmd cmd
}
// Execute executes the `helm repo add` command.
func (a *AddRepo) Execute(_ Config) error {
return a.cmd.Run()
}
// Prepare gets the AddRepo ready to execute.
func (a *AddRepo) Prepare(cfg Config) error {
if a.Repo == "" {
return fmt.Errorf("repo is required")
}
split := strings.SplitN(a.Repo, "=", 2)
if len(split) != 2 {
return fmt.Errorf("bad repo spec '%s'", a.Repo)
}
name := split[0]
url := split[1]
args := make([]string, 0)
if cfg.Namespace != "" {
args = append(args, "--namespace", cfg.Namespace)
}
if cfg.Debug {
args = append(args, "--debug")
}
args = append(args, "repo", "add", name, url)
a.cmd = command(helmBin, args...)
a.cmd.Stdout(cfg.Stdout)
a.cmd.Stderr(cfg.Stderr)
if cfg.Debug {
fmt.Fprintf(cfg.Stderr, "Generated command: '%s'\n", a.cmd.String())
}
return nil
}

141
internal/run/addrepo_test.go Normal file
View file

@ -0,0 +1,141 @@
package run
import (
"fmt"
"github.com/golang/mock/gomock"
"github.com/stretchr/testify/suite"
"strings"
"testing"
)
type AddRepoTestSuite struct {
suite.Suite
ctrl *gomock.Controller
mockCmd *Mockcmd
originalCommand func(string, ...string) cmd
commandPath string
commandArgs []string
}
func (suite *AddRepoTestSuite) BeforeTest(_, _ string) {
suite.ctrl = gomock.NewController(suite.T())
suite.mockCmd = NewMockcmd(suite.ctrl)
suite.originalCommand = command
command = func(path string, args ...string) cmd {
suite.commandPath = path
suite.commandArgs = args
return suite.mockCmd
}
}
func (suite *AddRepoTestSuite) AfterTest(_, _ string) {
suite.ctrl.Finish()
command = suite.originalCommand
}
func TestAddRepoTestSuite(t *testing.T) {
suite.Run(t, new(AddRepoTestSuite))
}
func (suite *AddRepoTestSuite) TestPrepareAndExecute() {
stdout := strings.Builder{}
stderr := strings.Builder{}
cfg := Config{
Stdout: &stdout,
Stderr: &stderr,
}
a := AddRepo{
Repo: "edeath=https://github.com/n_marks/e-death",
}
suite.mockCmd.EXPECT().
Stdout(&stdout).
Times(1)
suite.mockCmd.EXPECT().
Stderr(&stderr).
Times(1)
suite.Require().NoError(a.Prepare(cfg))
suite.Equal(helmBin, suite.commandPath)
suite.Equal([]string{"repo", "add", "edeath", "https://github.com/n_marks/e-death"}, suite.commandArgs)
suite.mockCmd.EXPECT().
Run().
Times(1)
suite.Require().NoError(a.Execute(cfg))
}
func (suite *AddRepoTestSuite) TestPrepareRepoIsRequired() {
// These aren't really expected, but allowing them gives clearer test-failure messages
suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
cfg := Config{}
a := AddRepo{}
err := a.Prepare(cfg)
suite.EqualError(err, "repo is required")
}
func (suite *AddRepoTestSuite) TestPrepareMalformedRepo() {
a := AddRepo{
Repo: "dwim",
}
err := a.Prepare(Config{})
suite.EqualError(err, "bad repo spec 'dwim'")
}
func (suite *AddRepoTestSuite) TestPrepareWithEqualSignInURL() {
suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
a := AddRepo{
Repo: "samaritan=https://github.com/arthur_claypool/samaritan?version=2.1",
}
suite.NoError(a.Prepare(Config{}))
suite.Contains(suite.commandArgs, "https://github.com/arthur_claypool/samaritan?version=2.1")
}
func (suite *AddRepoTestSuite) TestNamespaceFlag() {
suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
cfg := Config{
Namespace: "alliteration",
}
a := AddRepo{
Repo: "edeath=https://github.com/theater_guy/e-death",
}
suite.NoError(a.Prepare(cfg))
suite.Equal(suite.commandPath, helmBin)
suite.Equal(suite.commandArgs, []string{"--namespace", "alliteration",
"repo", "add", "edeath", "https://github.com/theater_guy/e-death"})
}
func (suite *AddRepoTestSuite) TestDebugFlag() {
suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
stderr := strings.Builder{}
command = func(path string, args ...string) cmd {
suite.mockCmd.EXPECT().
String().
Return(fmt.Sprintf("%s %s", path, strings.Join(args, " ")))
return suite.mockCmd
}
cfg := Config{
Debug: true,
Stderr: &stderr,
}
a := AddRepo{
Repo: "edeath=https://github.com/the_bug/e-death",
}
suite.Require().NoError(a.Prepare(cfg))
suite.Equal(fmt.Sprintf("Generated command: '%s --debug "+
"repo add edeath https://github.com/the_bug/e-death'\n", helmBin), stderr.String())
}

44
internal/run/depupdate.go Normal file
View file

@ -0,0 +1,44 @@
package run
import (
"fmt"
)
// DepUpdate is an execution step that calls `helm dependency update` when executed.
type DepUpdate struct {
Chart string
cmd cmd
}
// Execute executes the `helm upgrade` command.
func (d *DepUpdate) Execute(_ Config) error {
return d.cmd.Run()
}
// Prepare gets the DepUpdate ready to execute.
func (d *DepUpdate) Prepare(cfg Config) error {
if d.Chart == "" {
return fmt.Errorf("chart is required")
}
args := make([]string, 0)
if cfg.Namespace != "" {
args = append(args, "--namespace", cfg.Namespace)
}
if cfg.Debug {
args = append(args, "--debug")
}
args = append(args, "dependency", "update", d.Chart)
d.cmd = command(helmBin, args...)
d.cmd.Stdout(cfg.Stdout)
d.cmd.Stderr(cfg.Stderr)
if cfg.Debug {
fmt.Fprintf(cfg.Stderr, "Generated command: '%s'\n", d.cmd.String())
}
return nil
}

128
internal/run/depupdate_test.go Normal file
View file

@ -0,0 +1,128 @@
package run
import (
"fmt"
"github.com/golang/mock/gomock"
"github.com/stretchr/testify/suite"
"strings"
"testing"
)
type DepUpdateTestSuite struct {
suite.Suite
ctrl *gomock.Controller
mockCmd *Mockcmd
originalCommand func(string, ...string) cmd
}
func (suite *DepUpdateTestSuite) BeforeTest(_, _ string) {
suite.ctrl = gomock.NewController(suite.T())
suite.mockCmd = NewMockcmd(suite.ctrl)
suite.originalCommand = command
command = func(path string, args ...string) cmd { return suite.mockCmd }
}
func (suite *DepUpdateTestSuite) AfterTest(_, _ string) {
command = suite.originalCommand
}
func TestDepUpdateTestSuite(t *testing.T) {
suite.Run(t, new(DepUpdateTestSuite))
}
func (suite *DepUpdateTestSuite) TestPrepareAndExecute() {
defer suite.ctrl.Finish()
stdout := strings.Builder{}
stderr := strings.Builder{}
cfg := Config{
Stdout: &stdout,
Stderr: &stderr,
}
command = func(path string, args ...string) cmd {
suite.Equal(helmBin, path)
suite.Equal([]string{"dependency", "update", "your_top_songs_2019"}, args)
return suite.mockCmd
}
suite.mockCmd.EXPECT().
Stdout(&stdout)
suite.mockCmd.EXPECT().
Stderr(&stderr)
suite.mockCmd.EXPECT().
Run().
Times(1)
d := DepUpdate{
Chart: "your_top_songs_2019",
}
suite.Require().NoError(d.Prepare(cfg))
suite.NoError(d.Execute(cfg))
}
func (suite *DepUpdateTestSuite) TestPrepareNamespaceFlag() {
defer suite.ctrl.Finish()
cfg := Config{
Namespace: "spotify",
}
command = func(path string, args ...string) cmd {
suite.Equal([]string{"--namespace", "spotify", "dependency", "update", "your_top_songs_2019"}, args)
return suite.mockCmd
}
suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
d := DepUpdate{
Chart: "your_top_songs_2019",
}
suite.Require().NoError(d.Prepare(cfg))
}
func (suite *DepUpdateTestSuite) TestPrepareDebugFlag() {
defer suite.ctrl.Finish()
stdout := strings.Builder{}
stderr := strings.Builder{}
cfg := Config{
Debug: true,
Stdout: &stdout,
Stderr: &stderr,
}
command = func(path string, args ...string) cmd {
suite.mockCmd.EXPECT().
String().
Return(fmt.Sprintf("%s %s", path, strings.Join(args, " ")))
return suite.mockCmd
}
suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
d := DepUpdate{
Chart: "your_top_songs_2019",
}
suite.Require().NoError(d.Prepare(cfg))
want := fmt.Sprintf("Generated command: '%s --debug dependency update your_top_songs_2019'\n", helmBin)
suite.Equal(want, stderr.String())
suite.Equal("", stdout.String())
}
func (suite *DepUpdateTestSuite) TestPrepareChartRequired() {
d := DepUpdate{}
suite.mockCmd.EXPECT().Stdout(gomock.Any()).AnyTimes()
suite.mockCmd.EXPECT().Stderr(gomock.Any()).AnyTimes()
err := d.Prepare(Config{})
suite.EqualError(err, "chart is required")
}

14
internal/run/help.go
View file

@ -6,12 +6,20 @@ import (
// Help is a step in a helm Plan that calls `helm help`.
type Help struct {
cmd cmd
HelmCommand string
cmd cmd
}
// Execute executes the `helm help` command.
func (h *Help) Execute(_ Config) error {
return h.cmd.Run()
func (h *Help) Execute(cfg Config) error {
if err := h.cmd.Run(); err != nil {
return fmt.Errorf("while running '%s': %w", h.cmd.String(), err)
}
if h.HelmCommand == "help" {
return nil
}
return fmt.Errorf("unknown command '%s'", h.HelmCommand)
}
// Prepare gets the Help ready to execute.

31
internal/run/help_test.go
View file

@ -38,9 +38,6 @@ func (suite *HelpTestSuite) TestPrepare() {
Stdout(&stdout)
mCmd.EXPECT().
Stderr(&stderr)
mCmd.EXPECT().
Run().
Times(1)
cfg := Config{
Stdout: &stdout,
@ -49,8 +46,32 @@ func (suite *HelpTestSuite) TestPrepare() {
h := Help{}
err := h.Prepare(cfg)
suite.Require().Nil(err)
h.Execute(cfg)
suite.NoError(err)
}
func (suite *HelpTestSuite) TestExecute() {
ctrl := gomock.NewController(suite.T())
defer ctrl.Finish()
mCmd := NewMockcmd(ctrl)
originalCommand := command
command = func(_ string, _ ...string) cmd {
return mCmd
}
defer func() { command = originalCommand }()
mCmd.EXPECT().
Run().
Times(2)
cfg := Config{}
help := Help{
HelmCommand: "help",
cmd: mCmd,
}
suite.NoError(help.Execute(cfg))
help.HelmCommand = "get down on friday"
suite.EqualError(help.Execute(cfg), "unknown command 'get down on friday'")
}
func (suite *HelpTestSuite) TestPrepareDebugFlag() {