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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
import json
import os
import subprocess
import sys
from pathlib import Path
from shutil import which
from mach.util import get_state_dir
from mozterm import Terminal
HERE = Path(__file__).parent.resolve()
SRC_ROOT = (HERE / ".." / ".." / ".." / "..").resolve()
PREVIEW_SCRIPT = HERE / "preview.py"
FZF_HEADER = """
Please select a performance test to execute.
{shortcuts}
""".strip()
fzf_shortcuts = {
"ctrl-t": "toggle-all",
"alt-bspace": "beginning-of-line+kill-line",
"?": "toggle-preview",
}
fzf_header_shortcuts = [
("select", "tab"),
("accept", "enter"),
("cancel", "ctrl-c"),
("cursor-up", "up"),
("cursor-down", "down"),
]
def run_fzf(cmd, tasks):
env = dict(os.environ)
env.update(
{"PYTHONPATH": os.pathsep.join([p for p in sys.path if "requests" in p])}
)
proc = subprocess.Popen(
cmd,
stdout=subprocess.PIPE,
stdin=subprocess.PIPE,
env=env,
universal_newlines=True,
)
out = proc.communicate("\n".join(tasks))[0].splitlines()
selected = []
query = None
if out:
query = out[0]
selected = out[1:]
return query, selected
def format_header():
terminal = Terminal()
shortcuts = []
for action, key in fzf_header_shortcuts:
shortcuts.append(
"{t.white}{action}{t.normal}: {t.yellow}<{key}>{t.normal}".format(
t=terminal, action=action, key=key
)
)
return FZF_HEADER.format(shortcuts=", ".join(shortcuts), t=terminal)
def select(test_objects):
mozbuild_dir = Path(Path.home(), ".mozbuild")
os.makedirs(str(mozbuild_dir), exist_ok=True)
cache_file = Path(mozbuild_dir, ".perftestfuzzy")
with cache_file.open("w") as f:
f.write(json.dumps(test_objects))
def _display(task):
from mozperftest.script import ScriptInfo
path = Path(task["path"])
script_info = ScriptInfo(str(path))
flavor = script_info.script_type.name
if flavor == "browsertime":
flavor = "bt"
tags = script_info.get("tags", [])
location = str(path.parent).replace(str(SRC_ROOT), "").strip("/")
if len(tags) > 0:
return f"[{flavor}][{','.join(tags)}] {path.name} in {location}"
return f"[{flavor}] {path.name} in {location}"
candidate_tasks = [_display(t) for t in test_objects]
fzf_bin = which("fzf", path=str(Path(get_state_dir(), "fzf", "bin"))) or which(
"fzf"
)
if not fzf_bin:
raise AssertionError("Unable to find fzf")
key_shortcuts = [k + ":" + v for k, v in fzf_shortcuts.items()]
base_cmd = [
fzf_bin,
"-m",
"--bind",
",".join(key_shortcuts),
"--header",
format_header(),
"--preview-window=right:50%",
"--print-query",
"--preview",
sys.executable + ' {} -t "{{+f}}"'.format(str(PREVIEW_SCRIPT)),
]
query_str, tasks = run_fzf(base_cmd, sorted(candidate_tasks))
return tasks