First stab at integrating the acl-plugin from VPP. Allow to craft ACLs
consisting of one-or-more ACEs (this is ensured by 'terms' being
required with min=1), and a rich language to be able to set any L3
and L4 (UDP, ICMP, TCP) matchers that the plugin provides.
Explain how the syntax will look like, although for now only YAMALE
syntax checking can be performed (semantic validation is next).
TESTED:
pim@hippo:~/src/vppcfg/vppcfg$ ./vppcfg.py check -c example.yaml
[INFO ] root.main: Loading configfile example.yaml
[INFO ] vppcfg.config.valid_config: Configuration validated successfully
[INFO ] root.main: Configuration is valid
Add a feature to plan a configuration without reading from the VPP Dataplane.
In this mode, the configuration file is read and validated in the same way as `check` or `plan`,
but then instead of retrieving the running state from the VPP API, a state is re-created using
the physical interfaces specified in the YAML config.
Implement this by creating vppapi:mockconfig() which reads the 'interfaces' scope from the YAML
config file, and creates a VPPMessage() of type sw_interface_details for each interface that is a
PHY (for now, only supporting device-type 'dpdk').
If the flag --novpp is specified in the planner, call mockconfig() instead of readconfig().
Some further details:
- if the MAC is not set in the YAML config, it won't be set in the output exec file.
- for bondethernets, no MAC can be generated unless it's set in the first member.
- the MTU is always set, because it's mocked to 64b and the YAML file will always be higher.
TESTED:
- the unit tests and YAML tests all pass
- the integration tests all pass, but they do not call this new codepath
- Based on an empty VPP on Hippo, I compared the output of these two, side by side:
for i in intest/*yaml; do ./vppcfg.py plan -c $i -o /tmp/$i-vpp.exec; done
for i in intest/*yaml; do ./vppcfg.py plan --novpp -c $i -o /tmp/$i-novpp.exec; done
==> The only changes here are:
* if I cannot determine the bondether MAC in the --novpp case, it is not emitted
* if the MAC address is set in the YAML file, the --novpp case will always emit it
* if VPP has mtu 9000, the --novpp case will end up still emitting interface and packet MTU,
because it mocks the interface MTU at 64.
In all cases, --novpp emits more configuration statements, and the statements that it emits are
redundant.
This attribute of the 'interface' schema allows the user to prompt what
type of PHY they are expecting this interface to be. It will serve an
immediate and a future purpose.
Immediate: presence of the 'dpdk' device-type in a list of interfaces
will help an upcoming vppapy.mockconfig() to generate a cache without
having to talk to the API. This is useful to generate a pre-compute a
complete vpp.exec based off of an empty VPP dataplane
Future: addition of different PHY types, notably RDMA and
VirtualEthernet types
TESTED:
- Added a unit test to ensure that only is_phy() eligable interfaces
receive the device-type attribute.
- All unit and YAML tests pass.
If there is no need to connect to a running VPP instance (for example,
if the configuration is going to mock the VPPMessage()s rather than read
them from the VPP dataplane), then there is no need to assert that a
socket exists.
Scan the JSON files in the constructor though, not at connect time, as
other methods may want to use the JSON files without having to connect
to the API.
Before, interface_names was a literal copy of the VPPMessage() from
sw_interface_details, so interfaces and interface_names kept the
messages twice. This change makes interface_names a pointer to the index
on interfaces.
- Update the cache creation to make the indirection from interface_names
to interfaces
- Introduce get_interface_by_name()
- Update/fix all the call sites
Tested:
- All unit tests and yamltests pass before and after this change
- The hippo integration test passes before and after this change
Fixed python load paths so that vppcfg will work installed as python
library and standalone from the source directory, fixing load
pathes for resources such as yaml files along the way.
Added a make target for pylint called 'make check-style', fixed a
number of minor pylint issues along the way.
Signed-off-by: Ray Kinsella <mdr@ashroe.eu>
Add a reasonably tolerant .pylintrc and fix most pylint errors and
warnings.
------------------------------------------------------------------
Your code has been rated at 9.78/10
Used:
$ flynt -a -tc . vppcfg
Execution time: 0.216s
Files checked: 24
Files modified: 13
Character count reduction: 632 (0.36%)
Per expression type:
Old style (`%`) expressions attempted: 209/211 (99.1%)
No `.format(...)` calls attempted.
No concatenations attempted.
F-string expressions created: 205
Ran an integration test before and after. No diffs.
VPPApiDumper() is its own file, preparing for VPPApiApplier() in an
upcoming commit. VPPApi() itself remains read-only. No need for an empty
__init__.py file.
Update vppcfg to use the correct vpp/dumper.py import
