Add proper error reporting to shared db lock.

2 files changed, 14 insertions, 1 deletions

diff --git a/common/changes/bug_4435_add-lock-timeout-error b/common/changes/bug_4435_add-lock-timeout-error
new file mode 100644
index 00000000..8f220b1d
--- /dev/null
+++ b/common/changes/bug_4435_add-lock-timeout-error
@@ -0,0 +1 @@
+  o Add lock timeout HTTP error (#4435).
diff --git a/common/src/leap/soledad/common/errors.py b/common/src/leap/soledad/common/errors.py
index 7c2d7296..62de19f8 100644
--- a/common/src/leap/soledad/common/errors.py
+++ b/common/src/leap/soledad/common/errors.py
@@ -57,14 +57,26 @@ class AlreadyLockedError(errors.U1DBError):
     wire_description = "lock is locked"
     status = 403
 
+
+class LockTimedOutError(errors.U1DBError):
+    """
+    Exception raised when timing out while trying to lock the shared database.
+    """
+
+    wire_description = "lock timed out"
+    status = 408
+
+
 # update u1db "wire description to status" and "wire description to exception"
 # maps.
-for e in [InvalidTokenError, NotLockedError, AlreadyLockedError]:
+for e in [InvalidTokenError, NotLockedError, AlreadyLockedError,
+        LockTimedOutError]:
     http_errors.wire_description_to_status.update({
         e.wire_description: e.status})
     errors.wire_description_to_exc.update({
         e.wire_description: e})
 
+
 # u1db error statuses also have to be updated
 http_errors.ERROR_STATUSES = set(
     http_errors.wire_description_to_status.values())