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Add a basic Au test using strategies.yaml, with consistent hashing. #7911

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Merged
ywkaras merged 1 commit into from
Jun 8, 2021
Merged

Add a basic Au test using strategies.yaml, with consistent hashing. #7911

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1 change: 1 addition & 0 deletions tests/gold_tests/next_hop/strategies_ch/body.gold
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This is the body.
141 changes: 141 additions & 0 deletions tests/gold_tests/next_hop/strategies_ch/strategies_ch.test.py
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'''
'''
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you 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.

Test.Summary = '''
Test next hop selection using strategies.yaml with consistent hashing.
'''

# Define and populate MicroServer.
#
server = Test.MakeOriginServer("server")
response_header = {
"headers":
"HTTP/1.1 200 OK\r\n"
"Connection: close\r\n"
"Cache-control: max-age=85000\r\n"
"\r\n",
"timestamp": "1469733493.993",
"body": "This is the body.\n"
}
num_objects = 32
for i in range(num_objects):
request_header = {
"headers":
f"GET /obj{i} HTTP/1.1\r\n"
"Host: does.not.matter\r\n" # But cannot be omitted.
"\r\n",
"timestamp": "1469733493.993",
"body": ""
}
server.addResponse("sessionlog.json", request_header, response_header)

dns = Test.MakeDNServer("dns")

# Define next hop trafficserver instances.
#
num_nh = 8
ts_nh = []
for i in range(num_nh):
ts = Test.MakeATSProcess(f"ts_nh{i}", command=f"traffic_server 2>nh_trace{i}.log")
ts.Disk.records_config.update({
'proxy.config.diags.debug.enabled': 1,
'proxy.config.diags.debug.tags': 'http|dns',
'proxy.config.dns.nameservers': f"127.0.0.1:{dns.Variables.Port}",
'proxy.config.dns.resolv_conf': "NULL",
})
ts.Disk.remap_config.AddLine(
f"map / http://127.0.0.1:{server.Variables.Port}"
)
ts_nh.append(ts)

ts = Test.MakeATSProcess("ts")

ts.Disk.records_config.update({
'proxy.config.diags.debug.enabled': 1,
'proxy.config.diags.debug.tags': 'http|dns|parent|next_hop|host_statuses|hostdb',
'proxy.config.dns.nameservers': f"127.0.0.1:{dns.Variables.Port}", # Only nameservers if resolv_conf NULL.
'proxy.config.dns.resolv_conf': "NULL", # This defaults to /etc/resvolv.conf (OS namesevers) if not NULL.
'proxy.config.http.cache.http': 0,
'proxy.config.http.uncacheable_requests_bypass_parent': 0,
'proxy.config.http.no_dns_just_forward_to_parent': 1,
'proxy.config.http.parent_proxy.mark_down_hostdb': 0,
'proxy.config.http.parent_proxy.self_detect': 0,
})

ts.Disk.File(ts.Variables.CONFIGDIR + "/strategies.yaml", id="strategies", typename="ats:config")
s = ts.Disk.strategies
s.AddLine("groups:")
s.AddLine(" - &g1")
for i in range(num_nh):
dns.addRecords(records={f"next_hop{i}": ["127.0.0.1"]})
s.AddLine(f" - host: next_hop{i}")
s.AddLine(f" protocol:")
s.AddLine(f" - scheme: http")
s.AddLine(f" port: {ts_nh[i].Variables.port}")
# The health check URL does not seem to be used currently.
# s.AddLine(f" health_check_url: http://next_hop{i}:{ts_nh[i].Variables.port}")
s.AddLine(f" weight: 1.0")
s.AddLines([
"strategies:",
" - strategy: the-strategy",
" policy: consistent_hash",
" hash_key: path",
" go_direct: false",
" parent_is_proxy: true",
" ignore_self_detect: true",
" groups:",
" - *g1",
" scheme: http"])

# Fallover not currently tested.
#
#s.AddLines([
#" fallover:",
#" max_simple_retries: 2",
#" ring_mode: exhaust_ring",
#" response_codes:",
#" - 404",
#" health_check:",
#" - passive"])

ts.Disk.remap_config.AddLine(
"map http://dummy.com http://not_used @strategy=the-strategy"
)

tr = Test.AddTestRun()
tr.Processes.Default.StartBefore(server)
tr.Processes.Default.StartBefore(dns)
for i in range(num_nh):
tr.Processes.Default.StartBefore(ts_nh[i])
tr.Processes.Default.StartBefore(Test.Processes.ts)
tr.Processes.Default.Command = 'echo start TS, HTTP server, DNS server and next hop TSes'
tr.Processes.Default.ReturnCode = 0

for i in range(num_objects):
tr = Test.AddTestRun()
tr.Processes.Default.Command = (
f'curl --verbose --proxy 127.0.0.1:{ts.Variables.port} http://dummy.com/obj{i}'
)
tr.Processes.Default.Streams.stdout = "body.gold"
tr.Processes.Default.ReturnCode = 0

tr = Test.AddTestRun()
# For some reason, the * won't be expanded when the command is executed, if stdout is not piped through "cat".
tr.Processes.Default.Command = "grep -F '200 OK' nh_trace*.log | cat"
tr.Processes.Default.Streams.stdout = "trace.gold"
tr.Processes.Default.ReturnCode = 0
96 changes: 96 additions & 0 deletions tests/gold_tests/next_hop/strategies_ch/trace.gold
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nh_trace0.log:HTTP/1.1 200 OK
nh_trace0.log:HTTP/1.1 200 OK
nh_trace0.log:HTTP/1.1 200 OK
nh_trace0.log:HTTP/1.1 200 OK
nh_trace0.log:HTTP/1.1 200 OK
nh_trace0.log:HTTP/1.1 200 OK
nh_trace0.log:HTTP/1.1 200 OK
nh_trace0.log:HTTP/1.1 200 OK
nh_trace0.log:HTTP/1.1 200 OK
nh_trace0.log:HTTP/1.1 200 OK
nh_trace0.log:HTTP/1.1 200 OK
nh_trace0.log:HTTP/1.1 200 OK
nh_trace0.log:HTTP/1.1 200 OK
nh_trace0.log:HTTP/1.1 200 OK
nh_trace0.log:HTTP/1.1 200 OK
nh_trace0.log:HTTP/1.1 200 OK
nh_trace0.log:HTTP/1.1 200 OK
nh_trace0.log:HTTP/1.1 200 OK
nh_trace1.log:HTTP/1.1 200 OK
nh_trace1.log:HTTP/1.1 200 OK
nh_trace1.log:HTTP/1.1 200 OK
nh_trace1.log:HTTP/1.1 200 OK
nh_trace1.log:HTTP/1.1 200 OK
nh_trace1.log:HTTP/1.1 200 OK
nh_trace1.log:HTTP/1.1 200 OK
nh_trace1.log:HTTP/1.1 200 OK
nh_trace1.log:HTTP/1.1 200 OK
nh_trace1.log:HTTP/1.1 200 OK
nh_trace1.log:HTTP/1.1 200 OK
nh_trace1.log:HTTP/1.1 200 OK
nh_trace1.log:HTTP/1.1 200 OK
nh_trace1.log:HTTP/1.1 200 OK
nh_trace1.log:HTTP/1.1 200 OK
nh_trace1.log:HTTP/1.1 200 OK
nh_trace1.log:HTTP/1.1 200 OK
nh_trace1.log:HTTP/1.1 200 OK
nh_trace1.log:HTTP/1.1 200 OK
nh_trace1.log:HTTP/1.1 200 OK
nh_trace1.log:HTTP/1.1 200 OK
nh_trace2.log:HTTP/1.1 200 OK
nh_trace2.log:HTTP/1.1 200 OK
nh_trace2.log:HTTP/1.1 200 OK
nh_trace2.log:HTTP/1.1 200 OK
nh_trace2.log:HTTP/1.1 200 OK
nh_trace2.log:HTTP/1.1 200 OK
nh_trace2.log:HTTP/1.1 200 OK
nh_trace2.log:HTTP/1.1 200 OK
nh_trace2.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace3.log:HTTP/1.1 200 OK
nh_trace4.log:HTTP/1.1 200 OK
nh_trace4.log:HTTP/1.1 200 OK
nh_trace4.log:HTTP/1.1 200 OK
nh_trace5.log:HTTP/1.1 200 OK
nh_trace5.log:HTTP/1.1 200 OK
nh_trace5.log:HTTP/1.1 200 OK
nh_trace5.log:HTTP/1.1 200 OK
nh_trace5.log:HTTP/1.1 200 OK
nh_trace5.log:HTTP/1.1 200 OK
nh_trace5.log:HTTP/1.1 200 OK
nh_trace5.log:HTTP/1.1 200 OK
nh_trace5.log:HTTP/1.1 200 OK
nh_trace5.log:HTTP/1.1 200 OK
nh_trace5.log:HTTP/1.1 200 OK
nh_trace5.log:HTTP/1.1 200 OK
nh_trace6.log:HTTP/1.1 200 OK
nh_trace6.log:HTTP/1.1 200 OK
nh_trace6.log:HTTP/1.1 200 OK
nh_trace7.log:HTTP/1.1 200 OK
nh_trace7.log:HTTP/1.1 200 OK
nh_trace7.log:HTTP/1.1 200 OK
nh_trace7.log:HTTP/1.1 200 OK
nh_trace7.log:HTTP/1.1 200 OK
nh_trace7.log:HTTP/1.1 200 OK