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+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# voltctl common functions
+
+*** Settings ***
+Documentation     Library for various utilities
+Library           SSHLibrary
+Library           HttpLibrary.HTTP
+Library           String
+Library           DateTime
+Library           Process
+Library           Collections
+Library           RequestsLibrary
+Library           OperatingSystem
+
+*** Keywords ***
+Create Device
+    [Arguments]    ${ip}    ${port}
+    [Documentation]    Parses the output of "voltctl device list" and inspects device ${serial_number}
+    #create/preprovision device
+    ${rc}    ${device_id}=    Run and Return Rc and Output
+    ...    ${VOLTCTL_CONFIG}; voltctl device create -t openolt -H ${ip}:${port}
+    Should Be Equal As Integers    ${rc}    0
+    [Return]    ${device_id}
+
+Enable Device
+    [Arguments]    ${device_id}
+    ${rc}    ${output}=    Run and Return Rc and Output    ${VOLTCTL_CONFIG}; voltctl device enable ${device_id}
+    Should Be Equal As Integers    ${rc}    0
+
+Validate Device
+    [Arguments]    ${serial_number}    ${admin_state}    ${oper_status}    ${connect_status}    ${onu_reason}    ${onu}=False
+    [Documentation]    Parses the output of "voltctl device list" and inspects device ${serial_number}
+    ...    Arguments are matched for device states of: "admin_state", "oper_status", and "connect_status"
+    ${output}=    Run    ${VOLTCTL_CONFIG}; voltctl device list -o json
+    ${jsondata}=    To Json    ${output}
+    Log    ${jsondata}
+    ${length}=    Get Length    ${jsondata}
+    : FOR    ${INDEX}    IN RANGE    0    ${length}
+    \    ${value}=    Get From List    ${jsondata}    ${INDEX}
+    \    ${astate}=    Get From Dictionary    ${value}    adminstate
+    \    ${opstatus}=    Get From Dictionary    ${value}    operstatus
+    \    ${cstatus}=    Get From Dictionary    ${value}    connectstatus
+    \    ${sn}=    Get From Dictionary    ${value}    serialnumber
+    \    ${mib_state}=    Get From Dictionary    ${value}    reason
+    \    Run Keyword If    '${sn}' == '${serial_number}'    Exit For Loop
+    Should Be Equal    ${astate}    ${admin_state}    Device ${serial_number} admin_state != ENABLED    values=False
+    Should Be Equal    ${opstatus}    ${oper_status}    Device ${serial_number} oper_status != ACTIVE    values=False
+    Should Be Equal    ${cstatus}    ${connect_status}    Device ${serial_number} connect_status != REACHABLE    values=False
+    Run Keyword If    '${onu}' == 'True'    Should Be Equal    ${mib_state}    ${onu_reason}    Device ${serial_number} mib_state incorrect    values=False
+
+
+Get Device ID From SN
+    [Arguments]    ${serial_number}
+    [Documentation]    Gets the device id by matching for ${serial_number}
+    ${output}=    Run    ${VOLTCTL_CONFIG}; voltctl device list -o json
+    ${jsondata}=    To Json    ${output}
+    Log    ${jsondata}
+    ${length}=    Get Length    ${jsondata}
+    : FOR    ${INDEX}    IN RANGE    0    ${length}
+    \    ${value}=    Get From List    ${jsondata}    ${INDEX}
+    \    ${id}=    Get From Dictionary    ${value}    id
+    \    ${sn}=    Get From Dictionary    ${value}    serialnumber
+    \    Run Keyword If    '${sn}' == '${serial_number}'    Exit For Loop
+    [Return]    ${id}
+
+Validate Device Removed
+    [Arguments]    ${id}
+    [Documentation]    Verifys that device, ${serial_number}, has been removed
+    ${output}=    Run    ${VOLTCTL_CONFIG}; voltctl device list -o json
+    ${jsondata}=    To Json    ${output}
+    Log    ${jsondata}
+    ${length}=    Get Length    ${jsondata}
+    @{ids}=    Create List
+    : FOR    ${INDEX}    IN RANGE    0    ${length}
+    \    ${value}=    Get From List    ${jsondata}    ${INDEX}
+    \    ${device_id}=    Get From Dictionary    ${value}    id
+    \    Append To List    ${ids}    ${device_id}
+    List Should Not Contain Value    ${ids}    ${id}
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