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[sonic-utilities][sonic-py-common] Move logic to get port config file path to sonic-py-common and update sonic-utilities to comply #5264

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merged 18 commits into from
Sep 4, 2020
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[sonic-utilities][sonic-py-common] Move logic to get port config file path to sonic-py-common and update sonic-utilities to comply #5264

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c7a9f2f
[sonic-utilities]update submodule with fix
vdahiya12 Aug 27, 2020
9bf9aed
[sonic-utilities] Update submodule
vdahiya12 Aug 27, 2020
9b0ae79
[sonic-py-common] address comments
vdahiya12 Aug 27, 2020
ab2f8a3
[sonic-py-common] address comments
vdahiya12 Aug 28, 2020
d9c7acc
[sonic-py-common] address comments
vdahiya12 Aug 28, 2020
bd27d97
[sonic-config-engine] address comments
vdahiya12 Aug 30, 2020
9841702
[sonic-py-common] fixing the build
vdahiya12 Sep 2, 2020
1a1c126
[sonic-py-common] fix build errors
vdahiya12 Sep 2, 2020
1b67ff8
[sonic-py-common] changes to make code simpler
vdahiya12 Sep 2, 2020
e131ead
[sonic-py-common] fix the coments
vdahiya12 Sep 2, 2020
e18a0c7
[sonic-py-common] fix the build/add more logic
vdahiya12 Sep 4, 2020
e1d34d8
[sonic-py-common] fix the args passing
vdahiya12 Sep 4, 2020
38a0bb8
[sonic-py-common] fixing the logic
vdahiya12 Sep 4, 2020
2607b9f
[sonic-py-common] fixing the logic
vdahiya12 Sep 4, 2020
db4149e
[sonic-py-common] fixed the logic
vdahiya12 Sep 4, 2020
de5fda7
[sonic-py-common] adding the function back
vdahiya12 Sep 4, 2020
8988996
[sonic_py_common] refactoring the code
vdahiya12 Sep 4, 2020
8047e8a
[sonic-py-common] fixing the comment format
vdahiya12 Sep 4, 2020
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32 changes: 3 additions & 29 deletions src/sonic-config-engine/portconfig.py
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@
import re
from collections import OrderedDict
from swsssdk import ConfigDBConnector
from sonic_py_common import device_info
except ImportError as e:
raise ImportError("%s - required module not found" % str(e))

Expand Down Expand Up @@ -64,33 +65,6 @@ def db_connect_configdb():
config_db = None
return config_db

def get_port_config_file_name(hwsku=None, platform=None, asic=None):

# check 'platform.json' file presence
port_config_candidates_Json = []
port_config_candidates_Json.append(os.path.join(PLATFORM_ROOT_PATH_DOCKER, PLATFORM_JSON))
if platform:
port_config_candidates_Json.append(os.path.join(PLATFORM_ROOT_PATH, platform, PLATFORM_JSON))

# check 'portconfig.ini' file presence
port_config_candidates = []
port_config_candidates.append(os.path.join(HWSKU_ROOT_PATH, PORT_CONFIG_INI))
if hwsku:
if platform:
if asic:
port_config_candidates.append(os.path.join(PLATFORM_ROOT_PATH, platform, hwsku, asic, PORT_CONFIG_INI))
port_config_candidates.append(os.path.join(PLATFORM_ROOT_PATH, platform, hwsku, PORT_CONFIG_INI))
port_config_candidates.append(os.path.join(PLATFORM_ROOT_PATH_DOCKER, hwsku, PORT_CONFIG_INI))
port_config_candidates.append(os.path.join(SONIC_ROOT_PATH, hwsku, PORT_CONFIG_INI))

elif platform and not hwsku:
port_config_candidates.append(os.path.join(PLATFORM_ROOT_PATH, platform, PORT_CONFIG_INI))

for candidate in port_config_candidates_Json + port_config_candidates:
if os.path.isfile(candidate):
return candidate
return None

def get_hwsku_file_name(hwsku=None, platform=None):
hwsku_candidates_Json = []
hwsku_candidates_Json.append(os.path.join(HWSKU_ROOT_PATH, HWSKU_JSON))
Expand Down Expand Up @@ -119,7 +93,7 @@ def get_port_config(hwsku=None, platform=None, port_config_file=None, hwsku_conf
return (ports, port_alias_map, port_alias_asic_map)

if not port_config_file:
port_config_file = get_port_config_file_name(hwsku, platform, asic)
port_config_file = device_info.get_path_to_port_config_file(asic)
if not port_config_file:
return ({}, {}, {})

Expand Down Expand Up @@ -289,7 +263,7 @@ def parse_platform_json_file(hwsku_json_file, platform_json_file):

def get_breakout_mode(hwsku=None, platform=None, port_config_file=None):
if not port_config_file:
port_config_file = get_port_config_file_name(hwsku, platform)
port_config_file = device_info.get_path_to_port_config_file()
if not port_config_file:
return None
if port_config_file.endswith('.json'):
Expand Down
5 changes: 3 additions & 2 deletions src/sonic-config-engine/sonic-cfggen
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Original file line number Diff line number Diff line change
Expand Up @@ -41,9 +41,10 @@ from minigraph import minigraph_encoder
from minigraph import parse_xml
from minigraph import parse_device_desc_xml
from minigraph import parse_asic_sub_role
from portconfig import get_port_config, get_port_config_file_name, get_breakout_mode
from portconfig import get_port_config, get_breakout_mode
from sonic_py_common.device_info import get_platform, get_system_mac
from sonic_py_common.multi_asic import get_asic_id_from_name, is_multi_asic
from sonic_py_common import device_info
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from config_samples import generate_sample_config
from config_samples import get_available_config
from swsssdk import SonicV2Connector, ConfigDBConnector, SonicDBConfig, ConfigDBPipeConnector
Expand Down Expand Up @@ -301,7 +302,7 @@ def main():
}}}
deep_update(data, hardware_data)
if args.port_config is None:
args.port_config = get_port_config_file_name(hwsku, platform)
args.port_config = device_info.get_path_to_port_config_file()
(ports, _, _) = get_port_config(hwsku, platform, args.port_config, asic_id)
if not ports:
print('Failed to get port config', file=sys.stderr)
Expand Down
26 changes: 15 additions & 11 deletions src/sonic-py-common/sonic_py_common/device_info.py
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Original file line number Diff line number Diff line change
Expand Up @@ -181,27 +181,31 @@ def get_paths_to_platform_and_hwsku_dirs():

return (platform_path, hwsku_path)


def get_path_to_port_config_file():
def get_path_to_port_config_file(asic=None):
"""
Retrieves the path to the device's port configuration file
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Returns:
A string containing the path the the device's port configuration file
"""
# Get platform and hwsku path
(platform_path, hwsku_path) = get_paths_to_platform_and_hwsku_dirs()

# First check for the presence of the new 'platform.json' file
port_config_file_path = os.path.join(platform_path, PLATFORM_JSON_FILE)
if not os.path.isfile(port_config_file_path):
# platform.json doesn't exist. Try loading the legacy 'port_config.ini' file
port_config_file_path = os.path.join(hwsku_path, PORT_CONFIG_FILE)
if not os.path.isfile(port_config_file_path):
raise OSError("Failed to detect port config file: {}".format(port_config_file_path))
port_config_candidates = []

# Check for 'platform.json' file presence first
port_config_candidates.append(os.path.join(platform_path, PLATFORM_JSON))

return port_config_file_path
# Check for 'port_config.ini' file presence in a few locations
port_config_candidates.append(os.path.join(hwsku_path, PORT_CONFIG_INI))
if asic:
port_config_candidates.append(os.path.join(hwsku_path, asic, PORT_CONFIG_INI))
port_config_candidates.append(os.path.join(platform_path, PORT_CONFIG_INI))
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@jleveque jleveque Aug 28, 2020 •
edited
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I believe we should be able to simplify this as follows, but will wait for input from @samaity and @SuvarnaMeenakshi in case recent changes have altered this:

    if asic:
        port_config_candidates.append(os.path.join(hwsku_path, asic, PORT_CONFIG_INI))
    else:
        port_config_candidates.append(os.path.join(hwsku_path, PORT_CONFIG_INI))

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Yes, the above suggested simplification looks good. If asic is defined, then platform/hwsku/port_config.ini will not be present as per current design.
In the previous code, I do not see port_config_candidates.append(os.path.join(platform_path, PORT_CONFIG_INI)). being directly used, and is used only if hwsku is not defined. Any reason for removing that check?

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@jleveque jleveque Aug 29, 2020 •
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Yes, the above suggested simplification looks good. If asic is defined, then platform/hwsku/port_config.ini will not be present as per current design.

Great. Thanks for the confirmation!

In the previous code, I do not see port_config_candidates.append(os.path.join(platform_path, PORT_CONFIG_INI)). being directly used, and is used only if hwsku is not defined. Any reason for removing that check?

Because port_config.ini has never resided directly under the <platform> directory (unless something changed recently), as it has always been hardware SKU-specific. That's one of the reasons I'm asking these questions. I don't believe that is a valid check, and I want to confirm that it can be removed. @samaity: It appears you added this directory as a candidate. What was your reasoning?

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@jleveque , As I have understood till now and also during platform.json file porting, the order was like below.

/usr/share/sonic/hwsku/
/usr/share/sonic/device/<platform>/<hwsku>/
/usr/share/sonic/platform/<hwsku>/
/usr/share/sonic/<hwsku>/

So, I followed the same, but yeah, I guess, I mistakenly added the directory. I don't think it's needed for port_config.ini. however, platform.json will be under the platform directory. So we are safe with the changes.

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@jleveque jleveque Sep 2, 2020 •
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So to finalize/summarize for posterity, platform.json will always be found under:

  • /usr/share/sonic/device/<platform>/ in the host OS
  • /usr/share/sonic/platform/ inside a container

And port_config.ini will always be found under:

  • /usr/share/sonic/device/<platform>/<hwsku>/<ASIC index>/ in the host OS of a multi-ASIC switch
  • /usr/share/sonic/device/<platform>/<hwsku>/ in the host OS of a single-ASIC switch
  • /usr/share/sonic/hwsku/<ASIC index>/ (also /usr/share/sonic/platform/<hwsku>/<ASIC index>/) in a container on a multi-ASIC switch
  • /usr/share/sonic/hwsku/ (also /usr/share/sonic/platform/<hwsku>/) in a container on a single-ASIC switch

@SuvarnaMeenakshi, @samaity: Correct?


for candidate in port_config_candidates:
if os.path.isfile(candidate):
return candidate

return None

def get_sonic_version_info():
if not os.path.isfile(SONIC_VERSION_YAML_PATH):
Expand Down
2 changes: 1 addition & 1 deletion src/sonic-utilities
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Submodule sonic-utilities updated from 17fb37 to 58c296