62 lines
2.0 KiB
Go
62 lines
2.0 KiB
Go
package app
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import (
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"bytes"
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"io"
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"os"
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"strings"
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"git.sendico.io/tech/sxchnge/notifications/bus"
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"git.sendico.io/tech/sxchnge/notifications/email"
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db "git.sendico.io/tech/sxchnge/shared/database"
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merrors "git.sendico.io/tech/sxchnge/shared/errors"
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"git.sendico.io/tech/sxchnge/shared/messaging"
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"gopkg.in/yaml.v3"
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)
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type Config struct {
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Queue bus.Config `yaml:"queue"`
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Messaging messaging.Config `yaml:"messaging"`
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Listen string `yaml:"listen"`
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TLSCert string `yaml:"tls_cert"`
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TLSKey string `yaml:"tls_key"`
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Database db.Config `yaml:"database"`
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Templates string `yaml:"templates"`
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Callers map[string]string `yaml:"callers"` // caller -> token environment variable
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Email email.Config `yaml:"email"`
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}
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func Load(path string) (Config, error) {
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c := Config{Queue: bus.DefaultConfig()}
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data, err := os.ReadFile(path)
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if err != nil {
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return c, merrors.OpaqueWrap(merrors.ErrInvalidArg, err, "cannot read configuration")
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}
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decoder := yaml.NewDecoder(bytes.NewReader(data))
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decoder.KnownFields(true)
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if err = decoder.Decode(&c); err != nil {
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return c, merrors.InvalidArgument("invalid configuration")
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}
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if err = decoder.Decode(new(any)); err != io.EOF {
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return c, merrors.InvalidArgument("unexpected configuration content")
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}
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if c.Listen == "" || c.Database.Driver != db.Mongo || c.Messaging.Driver != messaging.BBNats || c.Templates == "" || len(c.Callers) == 0 {
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return c, merrors.InvalidArgument("missing notification configuration")
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}
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if (c.TLSCert == "") != (c.TLSKey == "") {
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return c, merrors.InvalidArgument("both TLS certificate and key must be configured together")
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}
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if err = c.Queue.Validate(); err != nil {
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return c, err
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}
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seen := map[string]bool{}
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for caller, env := range c.Callers {
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token := os.Getenv(env)
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if strings.TrimSpace(caller) == "" || len(strings.TrimSpace(token)) < 32 || seen[token] {
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return c, merrors.InvalidArgument("caller credentials must be unique and at least 32 bytes")
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}
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seen[token] = true
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}
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return c, nil
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}
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