feat(docker): add docker compose support#110
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pszymkowiak
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Thanks for adding docker compose support! A few issues to address before merge.
The main recurring issue is bytes/chars confusion — same pattern as in PR #93. str::find() / str::rfind() return byte offsets, but the code uses them as char indices in chars().skip() or Vec<char>[idx..]. This works for pure ASCII but panics or gives wrong results with multi-byte UTF-8 characters.
src/container.rs
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| // Extract port from end of line | ||
| let port_str = if let Some(port_idx) = line_str.rfind("0.0.0.0:") { | ||
| let chars: Vec<char> = line_str.chars().collect(); | ||
| let port_chars: Vec<char> = chars[port_idx..].to_vec(); |
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Bug: rfind() returns a byte offset, but it's used here as an index into Vec<char>. If the line contains any multi-byte UTF-8 characters before the port section, this will index into the wrong position or panic with out-of-bounds.
Same pattern flagged in PR #93.
Fix: either work entirely in bytes (use &line_str[port_idx..]) or convert the byte offset to a char offset:
let port_str = if let Some(port_idx) = line_str.rfind("0.0.0.0:") {
let compact = compact_ports(line_str[port_idx..].trim());
format!(" [{}]", compact)
} else {
String::new()
};No need for the chars().collect() → Vec<char> dance here — byte slicing works fine since rfind returns a byte offset and string slicing expects byte offsets.
src/container.rs
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| let mut services: Vec<String> = Vec::new(); | ||
| for line in raw.lines() { | ||
| if let Some(start) = line.find('[') { | ||
| let after: String = line.chars().skip(start + 1).collect(); |
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Same bytes/chars bug: find('[') returns a byte offset, but chars().skip(start + 1) treats it as a char count.
Simpler fix — use byte slicing throughout:
if let Some(start) = line.find('[') {
if let Some(end) = line[start+1..].find(']') {
let bracket = &line[start+1..start+1+end];
let svc = bracket.split_whitespace().next().unwrap_or("");
// ...
}
}'[' and ']' are single-byte ASCII, so byte arithmetic is safe here.
src/container.rs
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| // Find SERVICE column (usually index 3, after quoted COMMAND) | ||
| // Find STATUS by looking for "Up" or "Exited" keywords | ||
| let line_str = *line; | ||
| let status = if line_str.contains("Up") { |
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contains("Up") is too greedy — it will false-positive on image names like setup-service:latest, commands like "python startup.py", etc.
Two options:
- Search for
" Up "(with surrounding spaces, matching docker's column formatting) - Better: use
docker compose ps --format(like the existingdocker_ps()does) to get structured output instead of parsing the human-readable table. This would avoid all the fragile column-parsing logic.
src/container.rs
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| .args(["compose", "ps"]) | ||
| .output() | ||
| .map(|o| String::from_utf8_lossy(&o.stdout).to_string()) | ||
| .unwrap_or_default(); |
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Inconsistent error handling: unwrap_or_default() silently swallows Docker errors. If Docker isn't installed or compose isn't available, the user gets "🐳 0 compose services" with no indication something is wrong.
Compare with run_compose_logs (line 610) and run_compose_build (line 641) which use .context("Failed to run ...")?.
Should be consistent:
let output = Command::new("docker")
.args(["compose", "ps"])
.output()
.context("Failed to run docker compose ps")?;
let raw = String::from_utf8_lossy(&output.stdout).to_string();
src/container.rs
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| }; | ||
|
|
||
| // Shorten image name: keep only the last segment | ||
| let short_image = image.split('/').last().unwrap_or(image); |
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Clippy warning: .last() on a DoubleEndedIterator iterates the entire iterator needlessly. Use .next_back() instead:
let short_image = image.split('/').next_back().unwrap_or(image);
src/container.rs
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| api-1 | Server listening on port 3000 | ||
| api-1 | Connected to database"; | ||
| let out = format_compose_logs(raw); | ||
| assert!(!out.is_empty(), "should produce output"); |
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Nit: this test only checks !out.is_empty() — it doesn't validate any actual content. At minimum, assert it contains the expected prefix:
assert!(out.contains("Compose logs"), "should have compose logs header");
src/container.rs
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| for line in services.iter().take(20) { | ||
| // docker compose ps columns are whitespace-separated but STATUS can contain spaces | ||
| // Columns: NAME IMAGE COMMAND SERVICE CREATED STATUS PORTS | ||
| // We split by 2+ spaces to handle multi-word fields |
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Nit: comment says "We split by 2+ spaces" but the code uses split_whitespace() which splits on any whitespace (single space included). Either update the comment or actually split by 2+ spaces with a regex/custom split.
|
Sorry for having you review so many issues. I really appreciate your time and feedback. I’ll make sure to double-check everything more carefully next time. |
…bytes/chars bugs
- Switch format_compose_ps to parse structured --format tab output
instead of fragile human-readable table (eliminates contains("Up")
false positives and byte/char confusion)
- Fix find('[') byte offset used with chars().skip() in build parsing
- Use .next_back() instead of .last() on DoubleEndedIterator
- Consistent error handling with .context()? in run_compose_ps
- Strengthen test assertion for compose logs
- Add tests for no-ports and long-image-path cases
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
|
i test the command and i have no error without docker running.
All three compose commands (ps, logs, build) swallow stderr and return exit code 0 even when Docker isn't running: $ rtk docker compose ps → "🐳 0 compose services" (exit 0) The underlying docker compose commands fail with Cannot connect to the Docker daemon on stderr, but since .output() captures everything and the exit code is never checked, the error is The fix: check output.status.success() after the .output() call. On failure, print stderr and propagate the exit code (same pattern as run_compose_passthrough already does). Example: if !output.status.success() { Note: the existing docker_ps has the same bug, but let's not replicate it 3 more times.
In format_compose_build, the step count collects all matching lines into a Vec just to call .len(). A simple .count() avoids the allocation: let step_count = raw.lines() |
Address PR rtk-ai#110 review feedback from pszymkowiak: - Check output.status.success() after .output() in run_compose_ps, run_compose_logs, and run_compose_build to prevent silent failures when Docker daemon is not running - Replace .collect::<Vec<&str>>().len() with .count() in format_compose_build step counting to avoid unnecessary allocation Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add token-optimized output for docker compose commands: - `docker compose ps`: compact service listing with status and ports - `docker compose logs`: deduplicated log output via existing log engine - `docker compose build`: summary with build time, services, and step count - Unsupported compose subcommands pass through directly Includes 11 tests (8 compose format tests + 3 for existing compact_ports). Fixes rtk-ai#101 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
…bytes/chars bugs
- Switch format_compose_ps to parse structured --format tab output
instead of fragile human-readable table (eliminates contains("Up")
false positives and byte/char confusion)
- Fix find('[') byte offset used with chars().skip() in build parsing
- Use .next_back() instead of .last() on DoubleEndedIterator
- Consistent error handling with .context()? in run_compose_ps
- Strengthen test assertion for compose logs
- Add tests for no-ports and long-image-path cases
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Address PR rtk-ai#110 review feedback from pszymkowiak: - Check output.status.success() after .output() in run_compose_ps, run_compose_logs, and run_compose_build to prevent silent failures when Docker daemon is not running - Replace .collect::<Vec<&str>>().len() with .count() in format_compose_build step counting to avoid unnecessary allocation Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Sync documentation version strings with Cargo.toml after rebasing on upstream master. Fixes CI validate-docs check. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This workflow was pulled in during rebase on upstream master. Not part of the docker compose feature — let upstream manage it. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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thanks for work. |
Workflow was unintentionally removed while resolving a push permission issue. Restored to match upstream master. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Upstream 0.22.2 sync (all previously missing fixes verified applied): - fix(lint): propagate linter exit code (rtk-ai#207) — CI false-green fix - feat: add rtk wc command for compact word/line/byte counts (rtk-ai#175) - fix(playwright): JSON parser (specs layer) + binary resolution (rtk-ai#215) - fix(grep): propagate rg exit codes 1/2 (rtk-ai#227) - fix(git): branch creation not swallowed by list mode (rtk-ai#194) - fix(git): support multiple -m flags in git commit (rtk-ai#202) - fix(grep): BRE \| translation + strip -r flag (rtk-ai#206) - fix(gh): smart markdown body filter for issue/pr view (rtk-ai#214) - fix(gh): gh run view --log-failed flag passthrough (rtk-ai#159) - feat(docker): docker compose support (rtk-ai#110) - feat: hook audit mode (rtk-ai#151) - feat: tee raw output to file (rtk-ai#134) Version bump: 0.21.1-fork.19 → 0.22.2-fork.1 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Summary
docker compose ps,docker compose logs, anddocker compose buildup,down,restart, etc.) pass through directlycompact_ports)Commands Added
rtk docker compose psrtk docker compose logsrtk docker compose buildTest plan
cargo test container::tests::)cargo fmt --all --checkcleancargo clippy --all-targetsno new warningscargo run -- docker compose psproduces compact outputFixes #101
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