mirror of
https://github.com/3bbbeau/tfvars-atlantis-config.git
synced 2024-11-22 14:00:52 +00:00
69 lines
2.3 KiB
Go
69 lines
2.3 KiB
Go
package repocfg
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import (
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"fmt"
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"os"
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"path/filepath"
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"strings"
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)
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// Ptr returns a pointer to type T
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func ptr[T any](v T) *T { return &v }
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// friendlyName creates a contextual name used for Atlantis projects and workflows
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func friendlyName(path, environment string) string {
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name := []string{strings.ReplaceAll(path, "/", "-"), pathWithoutExtension(filepath.Base(environment))}
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return strings.TrimSuffix(strings.Join(name, "-"), "-")
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}
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// pathWithoutExtension removes the file extension from a base path.
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// if the path has no extension ("."), it returns an empty string.
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func pathWithoutExtension(path string) string {
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return strings.TrimSuffix(strings.TrimSuffix(filepath.Base(path), filepath.Ext(path)), filepath.Base(path))
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}
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var ErrNoEnvVars error = fmt.Errorf("no matching prefixed environment variables found")
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// Generates the Atlantis multienv string within stages for multi-environment
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// Terraform projects, e.g:
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//
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// EnvVar1Name=value1,EnvVar2Name=value2,EnvVar3Name=value3
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//
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// Given a prefix for the environment name of the workflow, strips the
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// environment name from existing environment vars while keeping their value.
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//
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// This is useful when you want to configure providers via environment variables
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// on a per-environment basis.
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//
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// Example:
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//
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// DEV_AWS_ACCESS_KEY_ID="foo"
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// DEV_AWS_SECRET_ACCESS_KEY="bar"
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// ->
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// AWS_ACCESS_KEY_ID=$DEV_AWS_ACCESS_KEY_ID
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// AWS_SECRET_ACCESS_KEY=$DEV_AWS_SECRET_ACCESS_KEY
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func prefixedEnviron(prefix string) (*string, error) {
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prefix = strings.ToUpper(prefix)
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if !strings.HasSuffix(prefix, "_") {
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prefix += "_"
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}
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strippedEnviron := []string{}
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for _, v := range os.Environ() {
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if strings.HasPrefix(v, prefix) {
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// Limits the split to only two parts, separating the key from the first
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// occurrence of '=', otherwise if the value contains '=' character(s) the
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// string would be split into more than two parts.
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name := strings.SplitN(v, "=", 2)[0]
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// Strips the prefix from the environment variable name, e.g. "DEV_" from
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// "DEV_AWS_ACCESS_KEY_ID" and let it equal to the original environment variable
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strippedEnviron = append(strippedEnviron, fmt.Sprintf("%s=$%s", strings.TrimPrefix(name, prefix), name))
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}
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}
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if len(strippedEnviron) == 0 {
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return nil, ErrNoEnvVars
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}
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return ptr(fmt.Sprintf("echo %s", strings.Join(strippedEnviron, ","))), nil
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}
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