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authorRickard Green <[email protected]>2014-03-13 03:47:28 +0100
committerRickard Green <[email protected]>2014-03-20 16:24:48 +0100
commite0052804daa336e0d05b8a451e15b07afd085074 (patch)
tree1e58ec80f38cdea611b1ce297a1826ee869de605 /lib/runtime_tools/doc/src/system_information.xml
parente310677df7b3ce6506b35044abafcb507caa7e07 (diff)
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Introduce system_information:sanity_check()
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+<?xml version="1.0" encoding="utf-8" ?>
+<!DOCTYPE erlref SYSTEM "erlref.dtd">
+
+<erlref>
+ <header>
+ <copyright>
+ <year>2014</year>
+ <holder>Ericsson AB. All Rights Reserved.</holder>
+ </copyright>
+ <legalnotice>
+ The contents of this file are subject to the Erlang Public License,
+ Version 1.1, (the "License"); you may not use this file except in
+ compliance with the License. You should have received a copy of the
+ Erlang Public License along with this software. If not, it can be
+ retrieved online at http://www.erlang.org/.
+
+ Software distributed under the License is distributed on an "AS IS"
+ basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ the License for the specific language governing rights and limitations
+ under the License.
+
+ </legalnotice>
+
+ <title></title>
+ <prepared></prepared>
+ <responsible></responsible>
+ <docno>1</docno>
+ <approved></approved>
+ <checked></checked>
+ <date></date>
+ <rev></rev>
+ <file>system_information.xml</file>
+ </header>
+ <module>system_information</module>
+ <modulesummary>System Information</modulesummary>
+ <description>
+ <p></p>
+ </description>
+ <funcs>
+ <func>
+ <name name="sanity_check" arity="0"/>
+ <fsummary>Perform a sanity check</fsummary>
+ <desc>
+ <p>Performs a sanity check on the system. If no issues
+ were found, <c>ok</c> is returned. If issues were
+ found, <c>{failed, <anno>Failures</anno>}</c> is
+ returned. All failures found will be part of the
+ <c><anno>Failures</anno></c> list. Currently defined
+ <c><anno>Failure</anno></c> elements in the
+ <c><anno>Failures</anno></c> list:</p>
+ <taglist>
+ <tag><c><anno>InvalidAppFile</anno></c></tag>
+ <item><p>An application has an invalid <c>.app</c> file. The
+ second element identifies the application which has the
+ invalid <c>.app</c> file.</p></item>
+ <tag><c><anno>InvalidApplicationVersion</anno></c></tag>
+ <item><p>An application has an invalid application version.
+ The second element identifies the application version that
+ is invalid.</p></item>
+ <tag><c><anno>MissingRuntimeDependencies</anno></c></tag>
+ <item><p>An application is missing
+ <seealso marker="kernel:app#runtime_dependencies">runtime
+ dependencies</seealso>. The second element identifies the
+ application (with version) that has missing dependencies.
+ The third element contains the missing dependencies.</p>
+ <p>Note that this check use application versions that
+ are loaded, or will be loaded when used. You might have
+ application versions that satisfies all dependencies
+ installed in the system, but if those are not loaded this
+ check will fail. The system will of course also fail when
+ used like this. This may happen when you have multiple
+ <seealso marker="doc/system_principles:versions">branched
+ versions</seealso> of the same application installed in the
+ system, but you do not use a
+ <seealso marker="doc/system_principles:system_principles#BOOTSCRIPT">boot
+ script</seealso> identifing the correct application version.</p>
+ </item>
+ </taglist>
+ <p>Currently the sanity check is limited to verifying
+ runtime dependencies found in the <c>.app</c> files of
+ all applications. More checks will be introduced in the
+ future. This implies that the return type <em>will</em>
+ change in the future.</p>
+ <note><p>An <c>ok</c> return value only means that
+ <c>sanity_check/0</c> did not find any issues, <em>not</em>
+ that no issues exist.</p></note>
+ </desc>
+ </func>
+ <func>
+ <name name="to_file" arity="1"/>
+ <fsummary>Write miscellaneous system information to file</fsummary>
+ <desc><p>Writes miscellaneous system information to file. This
+ information will typically be requested by the Erlang/OTP team
+ at Ericsson AB when reporting an issue.</p></desc>
+ </func>
+ </funcs>
+ </erlref>
+