NissimShiman commented on a change in pull request #4627:
URL: https://github.com/apache/nifi/pull/4627#discussion_r537823392
##########
File path:
nifi-commons/nifi-utils/src/main/java/org/apache/nifi/processor/util/StandardValidators.java
##########
@@ -848,8 +849,8 @@ public ValidationResult validate(final String subject,
final String value, final
}
final File file = new File(substituted);
- final boolean valid = file.exists();
- final String explanation = valid ? null : "File " + file + " does
not exist";
+ final boolean valid = file.exists() & !file.isDirectory();
+ final String explanation = valid ? null : "File " + file + " does
not exist or is directory";
return new
ValidationResult.Builder().subject(subject).input(value).valid(valid).explanation(explanation).build();
}
Review comment:
@tlsmith See comment from @MikeThomsen [1] " Any refactored version
would have to not change the current default behavior. So, what I'd suggest
would be a second constructor that allows you to set a boolean flag to put in a
"file-only" mode."
I agree with this assessment and recommend this as well for this ticket.
[1] https://mail-archives.apache.org/mod_mbox/nifi-dev/202011.mbox/browser.
Subject: Re: FILE_EXISTS_VALIDATOR allows directories as well, is this a
feature or a bug?
##########
File path:
nifi-commons/nifi-utils/src/main/java/org/apache/nifi/processor/util/StandardValidators.java
##########
@@ -848,8 +849,8 @@ public ValidationResult validate(final String subject,
final String value, final
}
final File file = new File(substituted);
- final boolean valid = file.exists();
- final String explanation = valid ? null : "File " + file + " does
not exist";
+ final boolean valid = file.exists() & !file.isDirectory();
+ final String explanation = valid ? null : "File " + file + " does
not exist or is directory";
return new
ValidationResult.Builder().subject(subject).input(value).valid(valid).explanation(explanation).build();
}
Review comment:
@tlsmith109 Let's just put the file checking in customValidate() to be
consistent with how it done in TailFile.java
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