woodpecker-helm3/internal/helm/config.go

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package helm
import (
"fmt"
"github.com/kelseyhightower/envconfig"
"io"
)
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// 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
// not have the `PLUGIN_` prefix. It may, however, be prefixed with the value in `$PLUGIN_PREFIX`.
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type Config struct {
// Configuration for drone-helm itself
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
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
StringValues string `split_words:"true"` // Argument to pass to --set-string in applicable helm commands
ValuesFiles []string `split_words:"true"` // Arguments to pass to --values in applicable helm commands
Namespace string `` // Kubernetes namespace for all helm commands
KubeToken string `envconfig:"KUBERNETES_TOKEN"` // Kubernetes authentication token to put in .kube/config
SkipTLSVerify bool `envconfig:"SKIP_TLS_VERIFY"` // Put insecure-skip-tls-verify in .kube/config
Certificate string `envconfig:"KUBERNETES_CERTIFICATE"` // The Kubernetes cluster CA's self-signed certificate (must be base64-encoded)
APIServer string `envconfig:"API_SERVER"` // The Kubernetes cluster's API endpoint
ServiceAccount string `split_words:"true"` // Account to use for connecting to the Kubernetes cluster
ChartVersion string `split_words:"true"` // Specific chart version to use in `helm upgrade`
DryRun bool `split_words:"true"` // Pass --dry-run to applicable helm commands
Wait bool `` // Pass --wait to applicable helm commands
ReuseValues bool `split_words:"true"` // Pass --reuse-values to `helm upgrade`
Timeout string `` // Argument to pass to --timeout in applicable helm commands
Chart string `` // Chart argument to use in applicable helm commands
Release string `` // Release argument to use in applicable helm commands
Force bool `` // Pass --force to applicable helm commands
Stdout io.Writer `ignored:"true"`
Stderr io.Writer `ignored:"true"`
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}
// NewConfig creates a Config and reads environment variables into it, accounting for several possible formats.
func NewConfig(stdout, stderr io.Writer) (*Config, error) {
cfg := Config{
Stdout: stdout,
Stderr: stderr,
}
if err := envconfig.Process("plugin", &cfg); err != nil {
return nil, err
}
prefix := cfg.Prefix
if err := envconfig.Process("", &cfg); err != nil {
return nil, err
}
if prefix != "" {
if err := envconfig.Process(cfg.Prefix, &cfg); err != nil {
return nil, err
}
}
if cfg.Debug && cfg.Stderr != nil {
cfg.logDebug()
}
return &cfg, nil
}
func (cfg Config) logDebug() {
if cfg.KubeToken != "" {
cfg.KubeToken = "(redacted)"
}
fmt.Fprintf(cfg.Stderr, "Generated config: %+v\n", cfg)
}