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view package-update-indicator-prefs.1.xml @ 31:9905d4ae351c

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Fix continuos loop of update checks if the refresh cache interval is 0 If the interval for refreshing the cache is set to 0 each check for available updates refreshes the cache and causes an "updates-changed" signal to be emitted after a short delay which in turn triggers another check for updates. The "updates-changed" signal does not actually mean that the number of available updates has changed but rather that the package metadata cache has been invalidated. Fix this by blocking the "updates-changed" signal handler from when a periodic or irregular check is started until 4 seconds after it has finished. This is necessary since the signal will be delivered with a delay after a transaction has been completed. In addition prevent checks for updates triggered by the "updates-changed" signal from refreshing the cache even the interval is 0 since the emission of the signal implies that the cache has just been refreshed.
author Guido Berhoerster <guido+pui@berhoerster.name>
date Thu, 29 Aug 2019 13:48:47 +0200
parents 3d72ca76538d
children
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<?xml version="1.0"?>
<!--

Copyright (C) 2018 Guido Berhoerster <guido+pui@berhoerster.name>

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<refentry xmlns="http://docbook.org/ns/docbook" xml:lang="en">
  <info>
    <author>
      <personname>
        <firstname>Guido</firstname>
        <surname>Berhoerster</surname>
      </personname>
      <email>guido+pui@berhoerster.name</email>
      <personblurb/>
    </author>
    <date>17 June, 2018</date>
  </info>
  <refmeta>
    <refentrytitle>package-update-indicator-prefs</refentrytitle>
    <manvolnum>1</manvolnum>
    <refmiscinfo class="source"/>
    <refmiscinfo class="version"/>
    <refmiscinfo class="manual">User Commands</refmiscinfo>
  </refmeta>
  <refnamediv>
    <refname>package-update-indicator-prefs</refname>
    <refpurpose>edit preferences for package-update-indicator</refpurpose>
  </refnamediv>
  <refsynopsisdiv>
    <cmdsynopsis>
      <command>package-update-indicator-prefs</command>
    </cmdsynopsis>
  </refsynopsisdiv>
  <refsect1>
    <title>Description</title>
    <para>The <command>package-update-indicator-prefs</command> utility can be
    used to edit the preferences for
    <command>package-update-indicator</command>.</para>
  </refsect1>
  <refsect1>
    <title>Preferences</title>
    <variablelist>
      <varlistentry>
        <term>Cache refresh interval</term>
        <listitem>
          <para>The interval in which package metadata is refreshed.</para>
        </listitem>
      </varlistentry>
      <varlistentry>
        <term>Update installer command</term>
        <listitem>
          <para>The command for installing updates.</para>
        </listitem>
      </varlistentry>
      <varlistentry>
        <term>Use mobile connection</term>
        <listitem>
          <para>Whether to use a mobile connection for refreshing the package
            cache.</para>
        </listitem>
      </varlistentry>
    </variablelist>
  </refsect1>
  <refsect1>
    <title>Exit Status</title>
    <para>The following exit values are returned:</para>
    <variablelist>
      <varlistentry>
        <term>0</term>
        <listitem>
          <para>Command successfully executed.</para>
        </listitem>
      </varlistentry>
      <varlistentry>
        <term>1</term>
        <listitem>
          <para>An unspecified error has occured.</para>
        </listitem>
      </varlistentry>
      <varlistentry>
        <term>2</term>
        <listitem>
          <para>Invalid command line options were specified.</para>
        </listitem>
      </varlistentry>
    </variablelist>
  </refsect1>
  <refsect1>
    <title>See Also</title>
    <para><citerefentry><refentrytitle>package-update-indicator</refentrytitle>
      <manvolnum>1</manvolnum></citerefentry></para>
  </refsect1>
</refentry>