1 files changed, 48 insertions, 8 deletions
diff --git a/src/software/openlmi/software/yumdb/errors.py b/src/software/openlmi/software/yumdb/errors.py
index 35dad14..2d9f0e5 100644
--- a/src/software/openlmi/software/yumdb/errors.py
+++ b/src/software/openlmi/software/yumdb/errors.py
@@ -23,29 +23,69 @@
 Exceptions raisable by YumWorker.
 """
 
-class DatabaseLockError(Exception):
+class YumDBError(Exception):
+    """Base class for all errors under yumdb package."""
+
+class DatabaseLockError(YumDBError):
     """Raised, when the yum database can not be locked."""
     pass
-class TransactionError(Exception):
+
+class TransactionError(YumDBError):
     """Base exception representing yum transaction processing error."""
     pass
 class TransactionBuildFailed(TransactionError):
     """Raised, when transaction building fails."""
     pass
+class PackageAlreadyInstalled(TransactionError):
+    """Raised, when trying to install already installed package."""
+    def __init__(self, pkg):
+        TransactionError.__init__(self,
+                'Package "%s" is already installed.' % pkg)
+class PackageOpenError(TransactionError):
+    """Raised, when trying to open package obtained from URI."""
+    def __init__(self, pkg, msg):
+        TransactionError.__init__(self,
+                'Failed to open package "%s": %s' % (pkg, msg))
 class TransactionExecutionFailed(TransactionError):
     """Raised, when YumBase.doTransaction() method fails."""
     pass
-class UnknownJob(Exception):
-    """Raised, when no handler is available for given job on worker."""
+
+class PackageError(YumDBError):
     pass
-class PackageNotFound(Exception):
+class PackageNotFound(PackageError):
     """Raised, when requested package could not be found."""
     pass
-class RepositoryNotFound(Exception):
+class PackageNotInstalled(PackageError):
+    """Raised, when requested package is not installed for desired action."""
+    def __init__(self, pkg):
+        PackageError.__init__(self, 'Package "%s" is not installed.' % pkg)
+
+class RepositoryError(YumDBError):
+    pass
+class RepositoryNotFound(RepositoryError):
     """Raised, when requested repository cound not be found."""
     def __init__(self, repoid):
-        Exception.__init__(self, "No such repository: %s" % repoid)
-class RepositoryChangeError(Exception):
+        RepositoryError.__init__(self, "No such repository: %s" % repoid)
+class RepositoryChangeError(RepositoryError):
     """Raised, when modification of repository failed."""
     pass
 
+class JobError(YumDBError):
+    pass
+class UnknownJob(JobError):
+    """Raised, when no handler is available for given job on worker."""
+    pass
+class InvalidURI(JobError):
+    """Raised, when passed uri is not a valid one."""
+    def __init__(self, uri):
+        JobError.__init__(self, "Invalid uri: \"%s\"" % uri)
+class InvalidNevra(JobError):
+    pass
+class JobControlError(JobError):
+    pass
+class JobNotFound(JobControlError):
+    def __init__(self, target):
+        JobControlError.__init__(self, "job %s could not be found" % target)
+class InvalidJobState(JobControlError):
+    pass
+