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change error connecting to backend when backend is cold started

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This commit is contained in:
Khaleel Al-Adhami 2025-02-12 18:44:43 -08:00
parent d79366d8b2
commit f22127124b
2 changed files with 16 additions and 4 deletions
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17
reflex/components/core/banner.py
View File

@ -17,6 +17,7 @@ from reflex.components.radix.themes.components.dialog import (
from reflex.components.radix.themes.layout.flex import Flex from reflex.components.radix.themes.layout.flex import Flex
from reflex.components.radix.themes.typography.text import Text from reflex.components.radix.themes.typography.text import Text
from reflex.components.sonner.toast import Toaster, ToastProps from reflex.components.sonner.toast import Toaster, ToastProps
from reflex.config import environment
from reflex.constants import Dirs, Hooks, Imports from reflex.constants import Dirs, Hooks, Imports
from reflex.constants.compiler import CompileVars from reflex.constants.compiler import CompileVars
from reflex.utils.imports import ImportVar from reflex.utils.imports import ImportVar
@ -109,6 +110,17 @@ class ConnectionToaster(Toaster):
id=toast_id, id=toast_id,
) # pyright: ignore [reportCallIssue] ) # pyright: ignore [reportCallIssue]
if environment.DOES_BACKEND_COLD_START.get():
error_message = Var.create("Backend is starting.")
toast_var = Var(
f"toast.loading({error_message!s}, {{...toast_props, description: '', closeButton: false, onDismiss: () => setUserDismissed(true)}},)"
)
else:
error_message = Var.create(f"Cannot connect to server: {connection_error}.")
toast_var = Var(
f"toast.error({error_message!s}, {{...toast_props, onDismiss: () => setUserDismissed(true)}},)"
)
individual_hooks = [ individual_hooks = [
f"const toast_props = {LiteralVar.create(props)!s};", f"const toast_props = {LiteralVar.create(props)!s};",
"const [userDismissed, setUserDismissed] = useState(false);", "const [userDismissed, setUserDismissed] = useState(false);",
@ -127,10 +139,7 @@ class ConnectionToaster(Toaster):
() => {{ () => {{
if ({has_too_many_connection_errors!s}) {{ if ({has_too_many_connection_errors!s}) {{
if (!userDismissed) {{ if (!userDismissed) {{
toast.error( {toast_var!s}
`Cannot connect to server: ${{{connection_error}}}.`,
{{...toast_props, onDismiss: () => setUserDismissed(true)}},
)
}} }}
}} else {{ }} else {{
toast.dismiss("{toast_id}"); toast.dismiss("{toast_id}");

3
reflex/config.py
View File

@ -601,6 +601,9 @@ class EnvironmentVariables:
# Paths to exclude from the hot reload. Takes precedence over include paths. Separated by a colon. # Paths to exclude from the hot reload. Takes precedence over include paths. Separated by a colon.
REFLEX_HOT_RELOAD_EXCLUDE_PATHS: EnvVar[List[Path]] = env_var([]) REFLEX_HOT_RELOAD_EXCLUDE_PATHS: EnvVar[List[Path]] = env_var([])
# Enables different behavior for when the backend would do a cold start if it was inactive.
DOES_BACKEND_COLD_START: EnvVar[bool] = env_var(False)
environment = EnvironmentVariables() environment = EnvironmentVariables()