refactor: use parameter list for multiple registries (#309)

_docs/content/_index.md

@@ -95,7 +95,7 @@ steps:
       tags: latest
 ```
 
-**Multiple registries:**
+#### Push to multiple registries
 
 ```yaml
 kind: pipeline
@@ -105,26 +105,19 @@ steps:
   - name: docker
     image: thegeeklab/drone-docker-buildx:23
     privileged: true
-    environment:
-      DOCKER_REGISTRY_PASSWORD:
-        from_secret: docker_registry_password
-      GITHUB_REGISTRY_PASSWORD:
-        from_secret: github_registry_password
     settings:
       repo:
         - octocat/example
         - ghcr.io/octocat/example
       tags: latest
-      registries: |
       registries:
-        - username: "octocat"
+        - username: octocat
-          password: "$DOCKER_REGISTRY_PASSWORD"
+          password: docker-password
-        - registry: "ghcr.io"
+        - registry: ghcr.io
-          username: "octocat"
+          username: octocat
-          password: "$GITHUB_REGISTRY_PASSWORD"
+          password: ghrc-password
 ```
 
-
 ## Build
 
 Build the binary with the following command:

_docs/data/data.yaml

@@ -295,6 +295,6 @@ properties:
     required: false
 
   - name: registries
-    description: Credentials for multiple registries described in YAML format. Check out the Examples for more information.
+    description: List of registry credentials. Check out the Examples for more information.
-    type: string
+    type: list
     required: false

cmd/drone-docker-buildx/config.go

@@ -246,7 +246,7 @@ func settingsFlags(settings *plugin.Settings, category string) []cli.Flag {
 			Name:        "docker.registry",
 			EnvVars:     []string{"PLUGIN_REGISTRY", "DOCKER_REGISTRY"},
 			Usage:       "docker registry to authenticate with",
-			Value:       "https://index.docker.io/v1/",
+			Value:       plugin.DefaultRegistry,
 			Destination: &settings.Login.Registry,
 			Category:    category,
 		},
@@ -332,7 +332,8 @@ func settingsFlags(settings *plugin.Settings, category string) []cli.Flag {
 			Name:        "docker.registries",
 			EnvVars:     []string{"PLUGIN_REGISTRIES"},
 			Usage:       "credentials for registries",
-			Destination: &settings.Login.RegistriesYaml,
+			Value:       "[]",
+			Destination: &settings.Login.RegistriesRaw,
 			Category:    category,
 		},
 	}

go.mod

@@ -6,14 +6,20 @@ require (
 	github.com/coreos/go-semver v0.3.1
 	github.com/joho/godotenv v1.5.1
 	github.com/sirupsen/logrus v1.9.3
+	github.com/stretchr/testify v1.7.0
 	github.com/thegeeklab/drone-plugin-lib/v2 v2.3.4
 	github.com/urfave/cli/v2 v2.25.5
 	golang.org/x/sys v0.11.0
 )
 
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+)
+
 require (
 	github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 // indirect
-	gopkg.in/yaml.v3 v3.0.1
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -25,6 +25,7 @@ github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673/go.mod h1:N3UwUGtsr
 golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.11.0 h1:eG7RXZHdqOJ1i+0lgLgCpSXAp6M3LYlAo6osgSi0xOM=
 golang.org/x/sys v0.11.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=

plugin/impl.go

@@ -1,6 +1,7 @@
 package plugin
 
 import (
+	"encoding/json"
 	"fmt"
 	"os"
 	"path/filepath"
@@ -9,7 +10,6 @@ import (
 	"github.com/sirupsen/logrus"
 	"github.com/urfave/cli/v2"
 	"golang.org/x/sys/execabs"
-	"gopkg.in/yaml.v3"
 )
 
 // Daemon defines Docker daemon parameters.
@@ -33,8 +33,9 @@ type Daemon struct {
 // Login defines Docker login parameters.
 type Login struct {
 	RegistryData
-	Config         string // Docker Auth Config
+	Config        string
-	RegistriesYaml string // Docker Auth with YAML config
+	Registries    []RegistryData
+	RegistriesRaw string
 }
 
 type RegistryData struct {
@@ -44,10 +45,6 @@ type RegistryData struct {
 	Email    string // Docker registry email
 }
 
-type RegistriesYaml struct {
-	Registries []RegistryData `yaml:"registries"`
-}
-
 // Build defines Docker build parameters.
 type Build struct {
 	Ref          string          // Git commit ref
@@ -86,7 +83,10 @@ type Settings struct {
 	Dryrun bool
 }
 
-const strictFilePerm = 0o600
+const (
+	strictFilePerm  = 0o600
+	DefaultRegistry = "https://index.docker.io/v1/"
+)
 
 // Validate handles the settings validation of the plugin.
 func (p *Plugin) Validate() error {
@@ -118,6 +118,16 @@ func (p *Plugin) Validate() error {
 		}
 	}
 
+	if err := json.Unmarshal([]byte(p.settings.Login.RegistriesRaw), &p.settings.Login.Registries); err != nil {
+		return fmt.Errorf("error unmarshal registries: %w", err)
+	}
+
+	for i, registryData := range p.settings.Login.Registries {
+		if registryData.Registry == "" {
+			p.settings.Login.Registries[i].Registry = DefaultRegistry
+		}
+	}
+
 	return nil
 }
 
@@ -185,19 +195,7 @@ func (p *Plugin) Execute() error {
 		}
 	}
 
-	if p.settings.Login.RegistriesYaml != "" {
+	for _, registryData := range p.settings.Login.Registries {
-		var t RegistriesYaml
-
-		err := yaml.Unmarshal([]byte(p.settings.Login.RegistriesYaml), &t)
-		if err != nil {
-			return fmt.Errorf("error unmarshal registries: %w", err)
-		}
-
-		for _, registryData := range t.Registries {
-			if registryData.Registry == "" {
-				registryData.Registry = "https://index.docker.io/v1/"
-			}
-
 		cmd := commandLogin(registryData)
 
 		err := cmd.Run()
@@ -205,7 +203,6 @@ func (p *Plugin) Execute() error {
 			return fmt.Errorf("error authenticating: %w", err)
 		}
 	}
-	}
 
 	if p.settings.Daemon.BuildkitConfig != "" {
 		err := os.WriteFile(buildkitConfig, []byte(p.settings.Daemon.BuildkitConfig), strictFilePerm)
@@ -217,7 +214,7 @@ func (p *Plugin) Execute() error {
 	switch {
 	case p.settings.Login.Password != "":
 		logrus.Info("Detected registry credentials")
-	case p.settings.Login.RegistriesYaml != "":
+	case len(p.settings.Login.Registries) > 0:
 		logrus.Info("Detected multiple registry credentials")
 	case p.settings.Login.Config != "":
 		logrus.Info("Detected registry credentials file")

plugin/impl_test.go

@@ -0,0 +1,23 @@
+package plugin
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestRegistries(t *testing.T) {
+	p := &Plugin{}
+	p.settings.Login.RegistriesRaw = `[{"username": "docker_user", "password": "docker_password"}]`
+
+	assert.NoError(t, p.Validate())
+
+	fmt.Println(p.settings.Login.Registries[0].Password)
+
+	if assert.Len(t, p.settings.Login.Registries, 1) {
+		assert.EqualValues(t, "docker_user", p.settings.Login.Registries[0].Username)
+		assert.EqualValues(t, "docker_password", p.settings.Login.Registries[0].Password)
+		assert.EqualValues(t, DefaultRegistry, p.settings.Login.Registries[0].Registry)
+	}
+}