Strip trailing slash from host in auth and configure commands (#4633)

Fixes #4628

## Summary
- Strip trailing slash from host URL in `setHostAndAccountId` (used by
`auth login` and `auth token`)
- Strip trailing slash in `normalizeHost` (used by `databricks
configure`)

## Test plan
- [x] Added test cases for trailing slash stripping in
`setHostAndAccountId` (flag and positional arg)
- [x] Updated `normalizeHost` test expectations for trailing slash
inputs
- [x] Verified all existing tests pass

Signed-off-by: Varun Deep Saini <varun.23bcs10048@ms.sst.scaler.com>
Co-authored-by: simon <simon.faltum@databricks.com>

Author: Varun Deep Saini

cmd/auth/login.go

@@ -302,6 +302,8 @@ func setHostAndAccountId(ctx context.Context, existingProfile *profile.Profile,
 		}
 	}
 
+	authArguments.Host = strings.TrimSuffix(authArguments.Host, "/")
+
 	// Determine the host type and handle account ID / workspace ID accordingly
 	cfg := &config.Config{
 		Host:                       authArguments.Host,

cmd/auth/login_test.go

@@ -49,12 +49,24 @@ func TestSetHost(t *testing.T) {
 	assert.NoError(t, err)
 	assert.Equal(t, "val from --host", authArguments.Host)
 
+	// Test setting host from flag with trailing slash is stripped
+	authArguments.Host = "https://www.host1.com/"
+	err = setHostAndAccountId(ctx, profile1, &authArguments, []string{})
+	assert.NoError(t, err)
+	assert.Equal(t, "https://www.host1.com", authArguments.Host)
+
 	// Test setting host from argument
 	authArguments.Host = ""
 	err = setHostAndAccountId(ctx, profile1, &authArguments, []string{"val from [HOST]"})
 	assert.NoError(t, err)
 	assert.Equal(t, "val from [HOST]", authArguments.Host)
 
+	// Test setting host from argument with trailing slash is stripped
+	authArguments.Host = ""
+	err = setHostAndAccountId(ctx, profile1, &authArguments, []string{"https://www.host1.com/"})
+	assert.NoError(t, err)
+	assert.Equal(t, "https://www.host1.com", authArguments.Host)
+
 	// Test setting host from profile
 	authArguments.Host = ""
 	err = setHostAndAccountId(ctx, profile1, &authArguments, []string{})

cmd/auth/token_test.go

@@ -298,6 +298,22 @@ func TestToken_loadToken(t *testing.T) {
 			},
 			validateToken: validateToken,
 		},
+		{
+			name: "host with trailing slash is stripped",
+			args: loadTokenArgs{
+				authArguments: &auth.AuthArguments{Host: "https://accounts.cloud.databricks.com/", AccountID: "active"},
+				profileName:   "",
+				args:          []string{},
+				tokenTimeout:  1 * time.Hour,
+				profiler:      profiler,
+				persistentAuthOpts: []u2m.PersistentAuthOption{
+					u2m.WithTokenCache(tokenCache),
+					u2m.WithOAuthEndpointSupplier(&MockApiClient{}),
+					u2m.WithHttpClient(&http.Client{Transport: fixtures.SliceTransport{refreshSuccessTokenResponse}}),
+				},
+			},
+			validateToken: validateToken,
+		},
 		{
 			name: "positional arg resolved as profile name",
 			args: loadTokenArgs{
@@ -601,6 +617,26 @@ func TestToken_loadToken(t *testing.T) {
 			},
 			validateToken: validateToken,
 		},
+		{
+			name: "no args, DATABRICKS_HOST env with trailing slash resolves",
+			setupCtx: func(ctx context.Context) context.Context {
+				ctx = env.Set(ctx, "DATABRICKS_HOST", "https://workspace-a.cloud.databricks.com/")
+				return ctx
+			},
+			args: loadTokenArgs{
+				authArguments: &auth.AuthArguments{},
+				profileName:   "",
+				args:          []string{},
+				tokenTimeout:  1 * time.Hour,
+				profiler:      profiler,
+				persistentAuthOpts: []u2m.PersistentAuthOption{
+					u2m.WithTokenCache(tokenCache),
+					u2m.WithOAuthEndpointSupplier(&MockApiClient{}),
+					u2m.WithHttpClient(&http.Client{Transport: fixtures.SliceTransport{refreshSuccessTokenResponse}}),
+				},
+			},
+			validateToken: validateToken,
+		},
 		{
 			name: "no args, DATABRICKS_CONFIG_PROFILE env resolves",
 			setupCtx: func(ctx context.Context) context.Context {

cmd/configure/host.go

@@ -6,24 +6,27 @@ import (
 	"strings"
 )
 
-// normalizeHost normalizes host input to prevent double https:// prefixes.
-// If the input already starts with https://, it returns it as-is.
-// If the input doesn't start with https://, it prepends https://.
+// normalizeHost ensures a https:// scheme is present and returns only scheme
+// and host, consistent with the normalizeHost in libs/databrickscfg/host.go.
 func normalizeHost(input string) string {
 	input = strings.TrimSpace(input)
 	u, err := url.Parse(input)
-	// If the input is not a valid URL, return it as-is
 	if err != nil {
 		return input
 	}
 
-	// If it already starts with https:// or http://, return as-is
-	if u.Scheme == "https" || u.Scheme == "http" {
+	if u.Scheme != "https" && u.Scheme != "http" {
+		u, err = url.Parse("https://" + input)
+		if err != nil {
+			return input
+		}
+	}
+
+	if u.Host == "" {
 		return input
 	}
 
-	// Otherwise, prepend https://
-	return "https://" + input
+	return (&url.URL{Scheme: u.Scheme, Host: u.Host}).String()
 }
 
 func validateHost(s string) error {
@@ -34,7 +37,7 @@ func validateHost(s string) error {
 	if u.Host == "" || u.Scheme != "https" {
 		return errors.New("must start with https://")
 	}
-	if u.Path != "" && u.Path != "/" {
+	if u.Path != "" {
 		return errors.New("must use empty path")
 	}
 	return nil

cmd/configure/host_test.go

@@ -12,25 +12,30 @@ func TestNormalizeHost(t *testing.T) {
 		expected string
 	}{
 		// Empty input
-		{"", "https://"},
-		{"   ", "https://"},
+		{"", ""},
+		{"   ", ""},
 
 		// Already has https://
 		{"https://example.databricks.com", "https://example.databricks.com"},
-		{"HTTPS://EXAMPLE.DATABRICKS.COM", "HTTPS://EXAMPLE.DATABRICKS.COM"},
-		{"https://example.databricks.com/", "https://example.databricks.com/"},
+		{"https://example.databricks.com/", "https://example.databricks.com"},
 
 		// Missing protocol (should add https://)
 		{"example.databricks.com", "https://example.databricks.com"},
 		{"  example.databricks.com  ", "https://example.databricks.com"},
 		{"subdomain.example.databricks.com", "https://subdomain.example.databricks.com"},
+		{"example.databricks.com/", "https://example.databricks.com"},
+
+		// Paths, query strings, and anchors are stripped
+		{"https://example.databricks.com/path", "https://example.databricks.com"},
+		{"https://example.databricks.com/path/", "https://example.databricks.com"},
+		{"https://example.databricks.com?query", "https://example.databricks.com"},
+		{"https://example.databricks.com#anchor", "https://example.databricks.com"},
 
 		// Edge cases
 		{"https://", "https://"},
 		{"example.com", "https://example.com"},
-		{"https://example.databricks.com/path", "https://example.databricks.com/path"},
-		{"https://example.databricks.com/path/", "https://example.databricks.com/path/"},
 		{"http://localhost:8080", "http://localhost:8080"},
+		{"http://localhost:8080/", "http://localhost:8080"},
 	}
 
 	for _, test := range tests {
@@ -50,15 +55,13 @@ func TestValidateHost(t *testing.T) {
 	err = validateHost("http://host")
 	assert.ErrorContains(t, err, "must start with https://")
 	err = validateHost("ftp://host")
+	assert.ErrorContains(t, err, "must start with https://")
 
 	// Must use empty path
-	assert.ErrorContains(t, err, "must start with https://")
 	err = validateHost("https://host/path")
 	assert.ErrorContains(t, err, "must use empty path")
 
-	// Ignore query params
-	err = validateHost("https://host/?query")
-	assert.NoError(t, err)
-	err = validateHost("https://host/")
+	// Valid hosts
+	err = validateHost("https://host")
 	assert.NoError(t, err)
 }