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# Copyright (c) 2023 Red Hat, Inc.
#
# 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.
from ovs.flowviz.html_format import HTMLBuffer, HTMLFormatter, HTMLStyle
from ovs.flowviz.process import (
FileProcessor,
)
class HTMLProcessor(FileProcessor):
"""File processor that prints OpenFlow tables in HTML."""
def __init__(self, opts):
super().__init__(opts, "ofp")
self.formatter = HTMLFormatter(self.opts)
self.data = dict()
def start_file(self, name, filename):
self.tables = dict()
def stop_file(self, name, filename):
self.data[name] = self.tables
def process_flow(self, flow, name):
table = flow.info.get("table") or 0
if not self.tables.get(table):
self.tables[table] = list()
self.tables[table].append(flow)
def html(self):
bg = (
self.formatter.style.get("background").color
if self.formatter.style.get("background")
else "white"
)
fg = (
self.formatter.style.get("default").color
if self.formatter.style.get("default")
else "black"
)
html_obj = """
<style>
body {{
background-color: {bg};
color: {fg};
}}
</style>""".format(
bg=bg, fg=fg
)
for name, tables in self.data.items():
name = name.replace(" ", "_")
html_obj += "<h1>{}</h1>".format(name)
html_obj += "<div id=flow_list>"
for table, flows in tables.items():
def anchor(x):
return "#table_%s_%s" % (name, x.value["table"])
resubmit_style = self.formatter.style.get("value.resubmit")
resubmit_color = resubmit_style.color if resubmit_style else fg
self.formatter.style.set_value_style(
"resubmit",
HTMLStyle(
resubmit_color,
anchor_gen=anchor,
),
)
html_obj += (
"<h2 id=table_{name}_{table}> Table {table}</h2>".format(
name=name, table=table
)
)
html_obj += "<ul id=table_{}_flow_list>".format(table)
for flow in flows:
html_obj += "<li id=flow_{}>".format(flow.id)
highlighted = None
if self.opts.get("highlight"):
result = self.opts.get("highlight").evaluate(flow)
if result:
highlighted = result.kv
buf = HTMLBuffer()
self.formatter.format_flow(buf, flow, highlighted)
html_obj += buf.text
html_obj += "</li>"
html_obj += "</ul>"
html_obj += "</div>"
return html_obj
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