Neo4j: Does the Windows Service Wrapper actually log anything? - windows
I'm trying to debug the service wrapper for Neo4j Community Server and no matter what I've tried there is never a log file generated. Does the Windows-Wrapper actually generate log entries? The documentation references the neo4j-wrapper but not the windows-wrapper.
OS: Windows 8.1 or Windows Server 2012 R2
Neo4j: 2.1.4 or 2.1.7 Community
I changed the logging levels to ALL everywhere I could and the only log files generated are /data/neo4j.0.0.log which seems to only contain information about the HTTP endpoint and /data/graph.db/messages.log which has no references to the wrapper. I expected to find a log file called /data/log/windows-wrapper.0.0.log
Any ideas on what I've done wrong?
windows-wrapper.logging.properties
# Properties file which configures the operation of the JDK logging facility.
# The system will look for this config file, first using a System property
# specified at startup:
#
# >java -Djava.util.logging.config.file=myLoggingConfigFilePath
#
# If this property is not specified, then the config file is retrieved from its
# default location at:
# JDK_HOME/jre/lib/logging.properties
# Global logging properties.
# ------------------------------------------
# The set of handlers to be loaded upon startup.
# Comma-separated list of class names.
# (? LogManager docs say no comma here, but JDK example has comma.)
#handlers=java.util.logging.FileHandler, java.util.logging.ConsoleHandler
handlers=java.util.logging.FileHandler
# Default global logging level.
# Loggers and Handlers may override this level
# SERVERE, INFO, FINE, FINEST
.level=ALL
# Loggers
# ------------------------------------------
# Loggers are usually attached to packages.
# Here, the level for each package is specified.
# The global level is used by default, so levels specified here simply act as
# an override.
org.neo4j.server.level=ALL
# Handlers
# -----------------------------------------
# --- ConsoleHandler ---
# Override of global logging level
java.util.logging.ConsoleHandler.level=ALL
java.util.logging.ConsoleHandler.formatter=org.neo4j.server.logging.SimpleConsoleFormatter
java.util.logging.ConsoleHandler.filter=org.neo4j.server.logging.NeoLogFilter
# --- FileHandler ---
# Override of global logging level
java.util.logging.FileHandler.level=ALL
# Naming style for the output file (the output file is placed in the directory
# defined by the "user.home" System property):
# "/" the local pathname separator
# "%t" the system temporary directory
# "%h" the value of the "user.home" system property
# "%g" the generation number to distinguish rotated logs
# "%u" a unique number to resolve conflicts
# "%%" translates to a single percent sign "%"
java.util.logging.FileHandler.pattern=data/log/windows-wrapper.%u.%g.log
# Specifies whether the FileHandler should append onto any existing files
# (defaults to false):
java.util.logging.FileHandler.append=true
# Limiting size of output file in bytes (10M):
java.util.logging.FileHandler.limit=10000000
# Number of output files to cycle through, by appending an integer to the base
# file name:
java.util.logging.FileHandler.count=10
# The name of the character set encoding to use (defaults to the default
# platform encoding):
#java.util.logging.FileHandler.encoding=
# Style of output (Simple or XML):
java.util.logging.FileHandler.formatter=java.util.logging.SimpleFormatter
logging.properties
# Properties file which configures the operation of the JDK
# logging facility.
# The system will look for this config file, first using
# a System property specified at startup:
#
# >java -Djava.util.logging.config.file=myLoggingConfigFilePath
#
# If this property is not specified, then the config file is
# retrieved from its default location at:
# JDK_HOME/jre/lib/logging.properties
# Global logging properties.
# ------------------------------------------
# The set of handlers to be loaded upon startup.
# Comma-separated list of class names.
# (? LogManager docs say no comma here, but JDK example has comma.)
handlers=java.util.logging.FileHandler, java.util.logging.ConsoleHandler
#handlers=java.util.logging.ConsoleHandler
# Default global logging level.
# Loggers and Handlers may override this level
# SEVERE, INFO, FINE, FINEST
.level=ALL
# Loggers
# ------------------------------------------
# Loggers are usually attached to packages.
# Here, the level for each package is specified.
# The global level is used by default, so levels specified here simply act as
# an override.
org.neo4j.server.level=ALL
# Handlers
# -----------------------------------------
# --- ConsoleHandler ---
# Override of global logging level
java.util.logging.ConsoleHandler.level=ALL
java.util.logging.ConsoleHandler.formatter=org.neo4j.server.logging.SimpleConsoleFormatter
#java.util.logging.ConsoleHandler.filter=org.neo4j.server.logging.NeoLogFilter
# --- FileHandler ---
# Override of global logging level
java.util.logging.FileHandler.level=ALL
# Naming style for the output file (the output file is placed in the directory
# defined by the "user.home" System property):
# "/" the local pathname separator
# "%t" the system temporary directory
# "%h" the value of the "user.home" system property
# "%g" the generation number to distinguish rotated logs
# "%u" a unique number to resolve conflicts
# "%%" translates to a single percent sign "%"
java.util.logging.FileHandler.pattern=data/log/neo4j.%u.%g.log
# Specifies whether the FileHandler should append onto any existing files
# (defaults to false):
java.util.logging.FileHandler.append=true
# Limiting size of output file in bytes (10M):
java.util.logging.FileHandler.limit=10000000
# Number of output files to cycle through, by appending an integer to the base
# file name:
java.util.logging.FileHandler.count=10
# The name of the character set encoding to use (defaults to the default
# platform encoding):
#java.util.logging.FileHandler.encoding=
# Style of output (Simple or XML):
java.util.logging.FileHandler.formatter=java.util.logging.SimpleFormatter
Since I was the last person to make changes to that particular part of the codebase, I'll attempt an awswer: yes, we do do logging. Here, for example: https://github.com/neo4j/windows-wrapper/blob/master/src/main/java/org/neo4j/wrapper/NeoServiceWrapper.java#L49-60
That is only in the case where you launch it as a console app though, it seems. And I am not sure if the library we use does logging of it's own. And I have to admit that last I looked at this I didn't notice whether logging was indeed working or not.
So, I have not got any concrete advice for you at the moment. I'll make sure to make a note in the backlog to go over this. Meanwhile if you get a breakthrough let us know!
Lasse
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