"""
PackageProvidesJava - command ``/bin/echo {java_command_package}``
==================================================================
This command reads the output of the pre-command:
``for jp in `/bin/ps auxwww | grep java | grep -v grep| awk '{print $11}' | sort -u`; do echo $jp `readlink -e $jp | xargs rpm -qf`; done``
This command looks for all versions of 'java' running and tries to find the
RPM packages which provide them. The running command and its package name
are stored as properties ``command`` and ``package`` of the object.
The reason why using above pre_command is that we need to record the links
between running_java_command and package which provides the java command. In
``ps aux`` output, we can only get what java command starts a java
application, instead of java package. Through this way, when there is jdk
bug, we can detect whether a running java application will be affected.
Typical contents of the pre_command::
/usr/lib/jvm/jre/bin/java java-1.8.0-openjdk-headless-1.8.0.141-3.b16.el6_9.x86_64
Parsed result::
self.command = "/usr/lib/jvm/jre/bin/java"
self.package = "java-1.8.0-openjdk-headless-1.8.0.141-3.b16.el6_9.x86_64"
Examples:
>>> command_package = shared[PackageProvidesJava]
>>> command_package.command
'/usr/lib/jvm/jre/bin/java'
>>> command_package.package
'java-1.8.0-openjdk-headless-1.8.0.141-3.b16.el6_9.x86_64'
Raises:
insights.parsers.ParseException: if there is no java application running
Raises:
insights.parsers.SkipException: if running java command is not provided by package installed through yum or rpm
"""
from insights import parser, CommandParser
from ..parsers import ParseException, SkipException
from insights.specs import Specs
[docs]@parser(Specs.package_provides_java)
class PackageProvidesJava(CommandParser):
"""
Parse the output of pre_command::
``for jp in `/bin/ps auxwww | grep java | grep -v grep| awk '{print $11}' | sort -u`; do echo "$jp `readlink -e $jp | xargs rpm -qf`"; done``.
Attributes:
command (str): The java command that starts application.
package (str): Java package that provides above java command.
"""
[docs] def parse_content(self, content):
if len(content) == 0:
raise ParseException("Error: ", 'there is not java application running')
l = content[0].split()
if len(l) != 2:
raise SkipException("Error: ",
'current running java command is not provided by package installed through yum or rpm')
self.command = l[0]
self.package = l[1]