From 187444738dbaa3892366e51aed94b28671c216c2 Mon Sep 17 00:00:00 2001
From: Mike Crute <mike@crute.us>
Date: Mon, 5 Dec 2022 22:34:20 -0800
Subject: secrets: add noop client

---
 secrets/noop_client.go | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 secrets/noop_client.go

(limited to 'secrets')

diff --git a/secrets/noop_client.go b/secrets/noop_client.go
new file mode 100644
index 0000000..85bd736
--- /dev/null
+++ b/secrets/noop_client.go
@@ -0,0 +1,67 @@
+package secrets
+
+import (
+	"context"
+	"sync"
+)
+
+type NoopHandle struct{}
+
+func (h *NoopHandle) Reference() string { return "NOOP" }
+
+var _ Handle = (*NoopHandle)(nil)
+
+// NoopClient does nothing and will never fail. It returns empty but
+// non-nil credentials and handles where needed. This is useful for when
+// code paths expect a secret client but using one is not needed.
+type NoopClient struct {
+	c chan Renewal
+}
+
+var _ Client = (*NoopClient)(nil)
+var _ ClientManager = (*NoopClient)(nil)
+
+func NewNoopClient() (ClientManager, error) {
+	return &NoopClient{make(chan Renewal)}, nil
+}
+
+func (c *NoopClient) DatabaseCredential(ctx context.Context, path string) (*Credential, Handle, error) {
+	return &Credential{}, &NoopHandle{}, nil
+}
+
+func (c *NoopClient) Secret(ctx context.Context, path string, out any) (Handle, error) {
+	return &NoopHandle{}, nil
+}
+
+func (c *NoopClient) WriteSecret(ctx context.Context, path string, in any) error {
+	return nil
+}
+
+func (c *NoopClient) Destroy(h Handle) error {
+	return nil
+}
+
+func (c *NoopClient) MakeNonCritical(h Handle) error {
+	return nil
+}
+
+func (c *NoopClient) Authenticate(ctx context.Context) error {
+	return nil
+}
+
+func (c *NoopClient) Notifications() <-chan Renewal {
+	return c.c
+}
+
+func (c *NoopClient) Run(ctx context.Context, wg *sync.WaitGroup) error {
+	wg.Add(1)
+	defer wg.Done()
+
+	for {
+		select {
+		case <-ctx.Done():
+			close(c.c)
+			return nil
+		}
+	}
+}
-- 
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