# terms of the Eclipse Public License v1.0 which accompanies this distribution,
# and is available at http://www.eclipse.org/legal/epl-v10.html
+import binascii
+from string import Template
+
+
__author__ = "Vratko Polak"
__copyright__ = "Copyright(c) 2015, Cisco Systems, Inc."
__license__ = "Eclipse Public License v1.0"
__email__ = "vrpolak@cisco.com"
-import binascii
-from string import Template
-
def get_variables(mininet_ip):
"""Return dict of variables for the given IP address of Mininet VM."""
# First off, there is segment describing PCC which conatins IP address but is otherwise constant.
# So the top-level template will look like this:
json_templ = Template('''{
- "topology": [
- {
- "node": [
- {
- "network-topology-pcep:path-computation-client": {
- "ip-address": "$IP",
- "reported-lsp": [$LSPS
- ],
- "state-sync": "synchronized",
- "stateful-tlv": {
- "odl-pcep-ietf-stateful07:stateful": {
- "lsp-update-capability": true,
- "odl-pcep-ietf-initiated00:initiation": true
- }
- }
- },
- "node-id": "pcc://$IP"
- }
- ],
- "topology-id": "pcep-topology",
- "topology-types": {
- "network-topology-pcep:topology-pcep": {}
+ "network-topology-pcep:path-computation-client": {
+ "ip-address": "$IP",
+ "reported-lsp": [$LSPS
+ ],
+ "state-sync": "synchronized",
+ "stateful-tlv": {
+ "odl-pcep-ietf-stateful07:stateful": {
+ "lsp-update-capability": true,
+ "odl-pcep-ietf-initiated00:initiation": true
}
}
- ]
+ }
}''')
# The _json variables will differ only in $LSPS, but $IP will be present inside.
# Thus, the $IP substitution will come last, and any auxiliary substitutions before this final one
# or a pair of delegated and instantiated (separated by comma) LSPS, in appropriate state.
# Of course, one LSP always follow a structure, for which here is the template:
lsp_templ = Template('''
- {
- "name": "$NAME",
- "path": [
- {
- "ero": {
- "ignore": false,
- "processing-rule": false,
- "subobject": [$HOPS
- ]
- },
- "lsp-id": $ID,
- "odl-pcep-ietf-stateful07:lsp": {
- "administrative": true,
- "delegate": true,
- "ignore": false,
- "odl-pcep-ietf-initiated00:create": $CREATED,
- "operational": "up",
- "plsp-id": $ID,
- "processing-rule": false,
- "remove": false,
- "sync": true,
- "tlvs": {
- "lsp-identifiers": {
- "ipv4": {
- "ipv4-extended-tunnel-id": "$IP",
- "ipv4-tunnel-endpoint-address": "1.1.1.1",
- "ipv4-tunnel-sender-address": "$IP"
- },
- "lsp-id": $ID,
- "tunnel-id": $ID
- },
- "symbolic-path-name": {
- "path-name": "$CODE"
- }
- }
- }
- }
- ]
- }''')
+ {
+ "name": "$NAME",
+ "path": [
+ {
+ "ero": {
+ "ignore": false,
+ "processing-rule": false,
+ "subobject": [$HOPS
+ ]
+ },
+ "lsp-id": $ID,
+ "odl-pcep-ietf-stateful07:lsp": {
+ "administrative": true,
+ "delegate": true,
+ "ignore": false,
+ "odl-pcep-ietf-initiated00:create": $CREATED,
+ "operational": "up",
+ "plsp-id": $ID,
+ "processing-rule": false,
+ "remove": false,
+ "sync": true,
+ "tlvs": {
+ "lsp-identifiers": {
+ "ipv4": {
+ "ipv4-extended-tunnel-id": "$IP",
+ "ipv4-tunnel-endpoint-address": "1.1.1.1",
+ "ipv4-tunnel-sender-address": "$IP"
+ },
+ "lsp-id": $ID,
+ "tunnel-id": $ID
+ },
+ "symbolic-path-name": {
+ "path-name": "$CODE"
+ }
+ }
+ }
+ }
+ ]
+ }''')
# IDs were already talked about, IP will be set last. Now, $NAME.
# Pcc-mock uses a fixed naming scheme for delegated tunnels, so one more template can be written,
# but it is so simple we can write just the one-line code instead:
delegated_code = binascii.b2a_base64(delegated_name)[:-1] # remove endline added by the library function
instantiated_code = binascii.b2a_base64(instantiated_name)[:-1]
# The remaining segment is HOPS, and that is the place where default and updated states differ.
- # Once gain, there is a template for a single hop:
+ # Once again, there is a template for a single hop:
hop_templ = Template('''
- {
- "ip-prefix": {
- "ip-prefix": "$HOPIP/32"
- },
- "loose": false
- }''')
+ {
+ "ip-prefix": {
+ "ip-prefix": "$HOPIP/32"
+ },
+ "loose": false
+ }''')
# The low-to-high part of V comes now, it is just substituting and concatenating.
# Hops:
final_hop = hop_templ.substitute({'HOPIP': '1.1.1.1'})
# There are three operations, so let us just write templates from information at
# https://wiki.opendaylight.org/view/BGP_LS_PCEP:Programmer_Guide#Tunnel_Management_for_draft-ietf-pce-stateful-pce-07_and_draft-ietf-pce-pce-initiated-lsp-00
# _xml describes content type and also distinguishes from similarly named _json strings.
- add_xml_templ = Template('''<input xmlns="urn:opendaylight:params:xml:ns:yang:topology:pcep">
- <node>pcc://$IP</node>
- <name>$NAME</name>
- <network-topology-ref xmlns:topo="urn:TBD:params:xml:ns:yang:network-topology">/topo:network-topology/topo:topology'''
- + '''[topo:topology-id="pcep-topology"]</network-topology-ref>
- <arguments>
- <lsp xmlns="urn:opendaylight:params:xml:ns:yang:pcep:ietf:stateful">
- <delegate>true</delegate>
- <administrative>true</administrative>
- </lsp>
- <endpoints-obj>
- <ipv4>
- <source-ipv4-address>$IP</source-ipv4-address>
- <destination-ipv4-address>1.1.1.1</destination-ipv4-address>
- </ipv4>
- </endpoints-obj>
- <ero>
- <subobject>
- <loose>false</loose>
- <ip-prefix><ip-prefix>1.1.1.1/32</ip-prefix></ip-prefix>
- </subobject>
- </ero>
- </arguments>
-</input>''')
- update_xml_templ = Template('''<input xmlns="urn:opendaylight:params:xml:ns:yang:topology:pcep">
- <node>pcc://$IP</node>
- <name>$NAME</name>
- <network-topology-ref xmlns:topo="urn:TBD:params:xml:ns:yang:network-topology">/topo:network-topology/topo:topology'''
- + '''[topo:topology-id="pcep-topology"]</network-topology-ref>
- <arguments>
- <lsp xmlns="urn:opendaylight:params:xml:ns:yang:pcep:ietf:stateful">
- <delegate>true</delegate>
- <administrative>true</administrative>
- </lsp>
- <ero>
- <subobject>
- <loose>false</loose>
- <ip-prefix><ip-prefix>2.2.2.2/32</ip-prefix></ip-prefix>
- </subobject>
- <subobject>
- <loose>false</loose>
- <ip-prefix><ip-prefix>1.1.1.1/32</ip-prefix></ip-prefix>
- </subobject>
- </ero>
- </arguments>
-</input>''')
- remove_xml_templ = Template('''<input xmlns="urn:opendaylight:params:xml:ns:yang:topology:pcep">
- <node>pcc://$IP</node>
- <name>$NAME</name>
- <network-topology-ref xmlns:topo="urn:TBD:params:xml:ns:yang:network-topology">/topo:network-topology/topo:topology'''
- + '''[topo:topology-id="pcep-topology"]</network-topology-ref>
-</input>''')
+ add_xml_templ = Template(
+ '<input xmlns="urn:opendaylight:params:xml:ns:yang:topology:pcep">\n'
+ ' <node>pcc://$IP</node>\n'
+ ' <name>$NAME</name>\n'
+ ' <network-topology-ref xmlns:topo="urn:TBD:params:xml:ns:yang:network-topology">'
+ '/topo:network-topology/topo:topology[topo:topology-id="pcep-topology"]'
+ '</network-topology-ref>\n'
+ ' <arguments>\n'
+ ' <lsp xmlns="urn:opendaylight:params:xml:ns:yang:pcep:ietf:stateful">\n'
+ ' <delegate>true</delegate>\n'
+ ' <administrative>true</administrative>\n'
+ ' </lsp>\n'
+ ' <endpoints-obj>\n'
+ ' <ipv4>\n'
+ ' <source-ipv4-address>$IP</source-ipv4-address>\n'
+ ' <destination-ipv4-address>1.1.1.1</destination-ipv4-address>\n'
+ ' </ipv4>\n'
+ ' </endpoints-obj>\n'
+ ' <ero>\n'
+ ' <subobject>\n'
+ ' <loose>false</loose>\n'
+ ' <ip-prefix><ip-prefix>1.1.1.1/32</ip-prefix></ip-prefix>\n'
+ ' </subobject>\n'
+ ' </ero>\n'
+ ' </arguments>\n'
+ '</input>\n'
+ )
+ update_xml_templ = Template(
+ '<input xmlns="urn:opendaylight:params:xml:ns:yang:topology:pcep">\n'
+ ' <node>pcc://$IP</node>\n'
+ ' <name>$NAME</name>\n'
+ ' <network-topology-ref xmlns:topo="urn:TBD:params:xml:ns:yang:network-topology">'
+ '/topo:network-topology/topo:topology[topo:topology-id="pcep-topology"]'
+ '</network-topology-ref>\n'
+ ' <arguments>\n'
+ ' <lsp xmlns="urn:opendaylight:params:xml:ns:yang:pcep:ietf:stateful">\n'
+ ' <delegate>true</delegate>\n'
+ ' <administrative>true</administrative>\n'
+ ' </lsp>\n'
+ ' <ero>\n'
+ ' <subobject>\n'
+ ' <loose>false</loose>\n'
+ ' <ip-prefix><ip-prefix>2.2.2.2/32</ip-prefix></ip-prefix>\n'
+ ' </subobject>\n'
+ ' <subobject>\n'
+ ' <loose>false</loose>\n'
+ ' <ip-prefix><ip-prefix>1.1.1.1/32</ip-prefix></ip-prefix>\n'
+ ' </subobject>\n'
+ ' </ero>\n'
+ ' </arguments>\n'
+ '</input>\n'
+ )
+ remove_xml_templ = Template(
+ '<input xmlns="urn:opendaylight:params:xml:ns:yang:topology:pcep">\n'
+ ' <node>pcc://$IP</node>\n'
+ ' <name>$NAME</name>\n'
+ ' <network-topology-ref xmlns:topo="urn:TBD:params:xml:ns:yang:network-topology">'
+ '/topo:network-topology/topo:topology[topo:topology-id="pcep-topology"]'
+ '</network-topology-ref>\n'
+ '</input>\n'
+ )
# The operations can be applied to either delegated or instantiated tunnel, NAME is the only distinguishing value.
# Also, the final IP substitution can be done here.
repl_dict = {'IP': mininet_ip}
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