This is required for the next commit. Also, drop CI_RETRY_EXE before
"dnf install", because it requires getopt, which will only be installed
later on via util-linux
123043e99c ci: Bump lint task image to Ubuntu Jammy (Hennadii Stepanov)
9b86114058 ci: Use pyenv's `python-build` to install Python in lint task (Hennadii Stepanov)
Pull request description:
This PR:
- is an alternative to bitcoin/bitcoin#26581 and bitcoin/bitcoin#26637
- closesbitcoin/bitcoin#26548
Key advantages of this PR over others:
- it uses pyenv's `python-build` [standalone](https://github.com/pyenv/pyenv/tree/master/plugins/python-build#using-python-build-standalone)
- requires no additional computational resources
Note for testing. The lint task must success regardless of whether the `python_cache` is populated or invalidated.
ACKs for top commit:
MarcoFalke:
ACK 123043e99c
fanquake:
ACK 123043e99c
Tree-SHA512: ba0fcdd4f2939a59692b173dcd1f5704444cfcfbb8111538c6f8160056d0536bba250e4f9b0f8c66f8b454e52034bf36ffe6afae76cdc0f7cc5b58b576d790ba
fa5cbf2290 ci: Properly set COMMIT_RANGE in lint task (MarcoFalke)
Pull request description:
Currently the variable holds (apart from the commits in the pull request) all commits to master since the pull was opened.
This is problematic, because already merged commits are linted in unrelated pulls, leading to:
* Wasted resources. For example, currently the lint task may take 9 minutes, when it should take 1. See https://cirrus-ci.com/task/6032782770569216?logs=lint#L1449
* False failures. For example, when a "wrong" commit is in master it can lead to some pulls failing unrelatedly, and others not.
Now that the CI has the `/merge` commit (since commit fad7281d78), `COMMIT_RANGE` can simply be set to `HEAD~..HEAD` to only hold the changes in the pull.
ACKs for top commit:
fanquake:
ACK fa5cbf2290
Tree-SHA512: e85fca4ca9d2615ddd2544403485e06885769a3f70bca297e23eefda2a1d28f47c5271f6adfa6ce0e5e972335c78098b76e0db4b109f59d0986bf508cef7528f
The merge strategy on the remote may be different than the local one.
This may cause local merges to be different or fail completely. Fix this
by using the result of the remote merge.
cc7335edc8 ci: run USDT interface test in a VM (0xb10c)
dba6f82342 test: adopt USDT utxocache interface tests (0xb10c)
220a5a2841 test: hook into PID in tracing tests (0xb10c)
Pull request description:
Changes a CI task that runs test the previously not run `test/functional/interface_usdt_*.py` functional tests (added in https://github.com/bitcoin/bitcoin/pull/24358).
This task is run as CirussCI `compute_engine_instance` VM as hooking into the tracepoints is not possible in CirrusCI docker containers (https://github.com/bitcoin/bitcoin/issues/23296#issuecomment-1024920845). We use an unoffical PPA and untrusted `bpfcc-tools` package in the CI as the Ubuntu jammy and Debian bullseye packages are outdated. We hope use an official package when new Ubuntu/Debian releases are available for the use with Google Compute Engine.
We make sure to hook into `bitcoind` binaries in USDT interface tests via their PID, instead of their path. This makes sure multiple functional tests running in parallel don't interfere with each other.
The utxocache USDT interface tests is adopted to a change of the functional test framework that wasn't detected as the tests weren't run in the CI. As the tracepoints expose internals, it can happen that we need to adopt the interface test when internals change. This is a bit awkward, and if it happens to frequently, we should consider generalizing the tests a bit more. For now it's fine, I think.
See the individual commit messages for more details on the changes.
Fixes https://github.com/bitcoin/bitcoin/issues/24782
Fixes https://github.com/bitcoin/bitcoin/issues/23296
I'd like to hear from reviewers:
- Are we OK with using the [`hadret/bpfcc`](https://launchpad.net/~hadret/+archive/ubuntu/bpfcc) PPA for now? There is a clear plan when to drop it and as is currently, it could only impact the newly added VM task.
- ~~Adding a new task increases CI runtime and costs. Should an existing `container` CI task be ported to a VM and reused instead?~~ Yes, see https://github.com/bitcoin/bitcoin/pull/25528#issuecomment-1179509525
ACKs for top commit:
MarcoFalke:
cr ACK cc7335edc8
Tree-SHA512: b7fddccc0a77d82371229d048abe0bf2c4ccaa45906497ef3040cf99e7f05561890aef4c253c40e4afc96bb838c9787fae81c8454c6fd9db583276e005a4ccb3
Our CI tasks are run by CirrusCI in Docker containers in a Google
Compute Engine based Kubernetes environment. These containers have
limited capabilities - especially CAP_SYS_ADMIN is missing. See
https://github.com/bitcoin/bitcoin/issues/23296#issuecomment-1024920845
We need elevated privileges to hook into the USDT tracepoints. We use a
CirrusCI "compute_engine_instance" (a VM, not a container) where we have
the required privileges. The ubunut-mininmal-2204-lts was choosen with
debian-11 being an alternative. Both pack an outdated 'bpfcc-tools'
package (v0.18.0) from 2020. This version prints warnings to stderr
during BPF bytecode compilation, which causes our functional test runner
to fail. This is fixed in newer verison.
Until debian-12 or a newer Ubuntu release is avaliable as image in GCE
(https://cloud.google.com/compute/docs/images/os-details), we use a
third-party and untrusted PPA that releases up-to-date versions of the
package.
The official iovisor (authors of BCC) PPA is outdated too. An
alternative would be to compile BCC from source in the CI.
Co-authored-by: MacroFake <falke.marco@gmail.com>
