Github user olegz commented on a diff in the pull request:
https://github.com/apache/nifi/pull/980#discussion_r78183927
--- Diff:
nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/TailFile.java
---
@@ -117,31 +173,78 @@
.allowableValues(LOCATION_LOCAL, LOCATION_REMOTE)
.defaultValue(LOCATION_LOCAL.getValue())
.build();
+
static final PropertyDescriptor START_POSITION = new
PropertyDescriptor.Builder()
.name("Initial Start Position")
- .description("When the Processor first begins to tail data,
this property specifies where the Processor should begin reading data. Once
data has been ingested from the file, "
+ .description("When the Processor first begins to tail data,
this property specifies where the Processor should begin reading data. Once
data has been ingested from a file, "
+ "the Processor will continue from the last point
from which it has received data.")
.allowableValues(START_BEGINNING_OF_TIME, START_CURRENT_FILE,
START_CURRENT_TIME)
.defaultValue(START_CURRENT_FILE.getValue())
.required(true)
.build();
+ static final PropertyDescriptor RECURSIVE = new
PropertyDescriptor.Builder()
+ .name("tailfile-recursive-lookup")
+ .displayName("Recursive lookup")
+ .description("When using Multiple files mode, this property
defines if files must be listed recursively or not"
+ + " in the base directory.")
+ .allowableValues("true", "false")
+ .defaultValue("true")
+ .required(true)
+ .build();
+
+ static final PropertyDescriptor ROLLING_STRATEGY = new
PropertyDescriptor.Builder()
+ .name("tailfile-rolling-strategy")
+ .displayName("Rolling Strategy")
+ .description("Specifies if the files to tail have a fixed name
or not.")
+ .required(true)
+ .allowableValues(FIXED_NAME, CHANGING_NAME)
+ .defaultValue(FIXED_NAME.getValue())
+ .build();
+
+ static final PropertyDescriptor LOOKUP_FREQUENCY = new
PropertyDescriptor.Builder()
+ .name("tailfile-lookup-frequency")
+ .displayName("Lookup frequency")
+ .description("Only used in Multiple files mode and Changing
name rolling strategy, it specifies the minimum "
+ + "duration the processor will wait before listing
again the files to tail.")
+ .required(false)
+ .addValidator(StandardValidators.TIME_PERIOD_VALIDATOR)
+ .defaultValue("10 minutes")
--- End diff --
Hmm, arbitrary timeouts always makes me worried unless there is some
reasonable justification. For example, why 10 and not 20 min? In any event it
seems like you want to give it a rather long time, unless overriden by user. If
so wouldn't making it "infinite" accomplish same/similar goal - _will not
re-list for 'n' time' where 'n' can be set by the user, otherwise its something
like Long.MAX_VAL.
This is by no means a directive, just a personal opinion, so would be
curious to hear your thoughts.
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