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GetObjectConfigPath: only truncate and hash comment and downtime filenames

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This partially reverts 68a0079c26686363b6202a8abd2712d2bf96d9f2 and keeps the
fix only for comment and downtime objects for now. For reasoning, please see
the comment in the code.
This commit is contained in:
Julian Brost 2021-06-17 10:52:25 +02:00 committed by Alexander A. Klimov
parent 3db48de0e6
commit 2dc5c9e47b
1 changed files with 15 additions and 3 deletions
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18
lib/remote/configobjectutility.cpp
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@ -39,9 +39,21 @@ String ConfigObjectUtility::GetObjectConfigPath(const Type::Ptr& type, const Str
String escapedName = EscapeName(fullName);
String old = prefix + escapedName + ".conf";
if (Utility::PathExists(old)) {
return std::move(old);
String longPath = prefix + escapedName + ".conf";
/*
* The long path may cause trouble due to exceeding the allowed filename length of the filesystem. Therefore, the
* preferred solution would be to use the truncated and hashed version as returned at the end of this function.
* However, for compatibility reasons, we have to keep the old long version in some cases. Notably, this could lead
* to the creation of objects that can't be synced to child nodes if they are running an older version. Thus, for
* now, the fix is only enabled for comments and downtimes, as these are the object types for which the issue is
* most likely triggered but can't be worked around easily (you'd have to rename the host and/or service in order to
* be able to schedule a downtime or add an acknowledgement, which is not feasible) and the impact of not syncing
* these objects through the whole cluster is limited. For other object types, we currently prefer to fail the
* creation early so that configuration inconsistencies throughout the cluster are avoided.
*/
if ((type->GetName() != "Comment" && type->GetName() != "Downtime") || Utility::PathExists(longPath)) {
return std::move(longPath);
}
/* Maximum length 80 bytes object name + 3 bytes "..." + 40 bytes SHA1 (hex-encoded) */