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lib.go
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lib.go
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package ssmwrap
import (
"context"
"fmt"
"github.com/handlename/ssmwrap/internal/app"
)
type ExportOptions struct {
Retries int
}
type ExportRule struct {
// Path of parameter store.
// If `path` ends with no-slash character, only the value of the path will be exported.
// If `path` ends with `/**/*`, all values under the path will be exported.
// If `path` ends with `/*`, only top level values under the path will be exported.
Path string
// Prefix for exported environment variable.
Prefix string
// UseEntirePath is flag if export entire path as environment variables name.
// If true, all values under the path will be exported. (/path/to/param -> PATH_TO_PARAM)
// If false, only top level values under the path will be exported. (/path/to/param -> PARAM)
UseEntirePath bool
}
// Export fetches parameters from SSM and export those to environment variables.
// This is for use ssmwrap as a library.
func Export(ctx context.Context, ers []ExportRule, options ExportOptions) error {
rules := make([]app.Rule, 0, len(ers))
for _, er := range ers {
pr, err := app.NewParameterRule(er.Path)
if err != nil {
return fmt.Errorf("failed to create ParameterRule: %w", err)
}
rules = append(rules, app.Rule{
ParameterRule: *pr,
DestinationRule: app.DestinationRule{
Type: app.DestinationTypeEnv,
TypeEnvOptions: &app.DestinationTypeEnvOptions{
Prefix: er.Prefix,
EntirePath: er.UseEntirePath,
},
},
})
}
sw := app.NewSSMWrap()
if options.Retries != 0 {
sw.Retries = options.Retries
}
if err := sw.Export(ctx, rules); err != nil {
return fmt.Errorf("failed to export parameters: %w", err)
}
return nil
}