<?xml version="1.0" encoding="UTF-8"?>
<grammar xmlns="http://relaxng.org/ns/structure/1.0"
         datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">

    <start>
        <ref name="element-crm-resource"/>
    </start>

    <define name="element-crm-resource">
        <choice>
            <ref name="agents-list" />
            <ref name="alternatives-list" />
            <ref name="constraints-list" />
            <externalRef href="generic-list-2.4.rng"/>
            <element name="metadata"> <text/> </element>
            <ref name="locate-list" />
            <ref name="operations-list" />
            <ref name="providers-list" />
            <ref name="reasons-list" />
            <ref name="resource-check" />
            <ref name="resource-config" />
            <ref name="resources-list" />
        </choice>
    </define>

    <define name="agents-list">
        <element name="agents">
            <attribute name="standard"> <text/> </attribute>
            <optional>
                <attribute name="provider"> <text/> </attribute>
            </optional>
            <zeroOrMore>
                <element name="agent"> <text/> </element>
            </zeroOrMore>
        </element>
    </define>

    <define name="alternatives-list">
        <element name="providers">
            <attribute name="for"> <text/> </attribute>
            <zeroOrMore>
                <element name="provider"> <text/> </element>
            </zeroOrMore>
        </element>
    </define>

    <define name="colocations-list">
        <element name="colocations">
            <oneOrMore>
                <ref name="element-colocation-list"/>
            </oneOrMore>
        </element>
    </define>

    <define name="constraints-list">
        <element name="constraints">
            <optional>
                <ref name="colocations-list"/>
            </optional>
            <element name="resource">
                <attribute name="id"> <text/> </attribute>
                <ref name="locations-list"/>
            </element>
            <optional>
                <ref name="colocations-list"/>
            </optional>
        </element>
    </define>

    <define name="locate-list">
        <element name="nodes">
            <attribute name="resource"> <text/> </attribute>
            <zeroOrMore>
                <element name="node">
                    <optional>
                        <attribute name="state"><value>promoted</value></attribute>
                    </optional>
                    <text/>
                </element>
            </zeroOrMore>
        </element>
    </define>

    <define name="locations-list">
        <element name="locations">
            <zeroOrMore>
                <element name="location">
                    <attribute name="host"> <text/> </attribute>
                    <attribute name="id"> <text/> </attribute>
                    <attribute name="score"> <text/> </attribute>
                </element>
            </zeroOrMore>
        </element>
    </define>

    <define name="operations-list">
        <element name="operations">
            <oneOrMore>
                <ref name="element-operation-list" />
            </oneOrMore>
        </element>
    </define>

    <define name="providers-list">
        <element name="providers">
            <attribute name="standard"> <value>ocf</value> </attribute>
            <optional>
                <attribute name="agent"> <text/> </attribute>
            </optional>
            <zeroOrMore>
                <element name="provider"> <text/> </element>
            </zeroOrMore>
        </element>
    </define>

    <define name="reasons-list">
        <choice>
            <ref name="no-resource-or-uname"/>
            <ref name="resource-and-uname"/>
            <ref name="no-resource-but-uname"/>
            <ref name="resource-but-no-uname"/>
        </choice>
    </define>

    <define name="no-resource-or-uname">
        <element name="reason">
            <element name="resources">
                <zeroOrMore>
                    <element name="resource">
                        <attribute name="id"> <text/> </attribute>
                        <attribute name="running"> <data type="boolean"/> </attribute>
                        <ref name="resource-check"/>
                    </element>
                </zeroOrMore>
            </element>
        </element>
    </define>

    <define name="resource-and-uname">
        <element name="reason">
            <attribute name="running_on"> <text/> </attribute>
            <ref name="resource-check"/>
        </element>
    </define>

    <define name="no-resource-but-uname">
        <element name="reason">
            <element name="resources">
                <zeroOrMore>
                    <element name="resource">
                        <attribute name="id"> <text/> </attribute>
                        <attribute name="running"> <data type="boolean"/> </attribute>
                        <attribute name="host"> <text/> </attribute>
                        <ref name="resource-check"/>
                    </element>
                </zeroOrMore>
            </element>
        </element>
    </define>

    <define name="resource-but-no-uname">
        <element name="reason">
            <attribute name="running"> <data type="boolean"/> </attribute>
            <ref name="resource-check"/>
        </element>
    </define>

    <define name="resource-config">
        <element name="resource_config">
            <externalRef href="resources-2.4.rng" />
            <element name="xml"> <text/> </element>
        </element>
    </define>

    <define name="resource-check">
        <element name="check">
            <attribute name="id"> <text/> </attribute>
            <optional>
                <choice>
                    <attribute name="remain_stopped"><value>true</value></attribute>
                    <attribute name="promotable"><value>false</value></attribute>
                </choice>
            </optional>
            <optional>
                <attribute name="unmanaged"><value>true</value></attribute>
            </optional>
            <optional>
                <attribute name="locked-to"> <text/> </attribute>
            </optional>
        </element>
    </define>

    <define name="resources-list">
        <element name="resources">
            <zeroOrMore>
                <externalRef href="resources-2.4.rng" />
            </zeroOrMore>
        </element>
    </define>

    <define name="element-colocation-list">
        <optional>
            <element name="colocation">
                <attribute name="peer"> <text/> </attribute>
                <attribute name="id"> <text/> </attribute>
            </element>
        </optional>
        <optional>
            <ref name="colocations-list" />
        </optional>
        <choice>
            <element name="colocation">
                <attribute name="peer"> <text/> </attribute>
                <attribute name="id"> <text/> </attribute>
                <attribute name="score"> <text/> </attribute>
                <attribute name="dependends">
                    <choice>
                        <value>needs</value>
                        <value>with</value>
                    </choice>
                </attribute>
                <attribute name="role"> <text/> </attribute>
            </element>
            <element name="colocation">
                <attribute name="peer"> <text/> </attribute>
                <attribute name="id"> <text/> </attribute>
                <attribute name="score"> <text/> </attribute>
            </element>
        </choice>
        <ref name="locations-list" />
        <optional>
            <ref name="colocations-list" />
        </optional>
    </define>

    <define name="element-operation-list">
        <element name="operation">
            <optional>
                <group>
                    <attribute name="rsc"> <text/> </attribute>
                    <attribute name="agent"> <text/> </attribute>
                </group>
            </optional>
            <attribute name="op"> <text/> </attribute>
            <attribute name="node"> <text/> </attribute>
            <attribute name="call"> <data type="nonNegativeInteger" /> </attribute>
            <attribute name="rc"> <data type="nonNegativeInteger" /> </attribute>
            <optional>
                <attribute name="last-rc-change"> <text/> </attribute>
                <attribute name="exec-time"> <data type="nonNegativeInteger" /> </attribute>
            </optional>
            <attribute name="status"> <text/> </attribute>
        </element>
    </define>
</grammar>