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feat(docker): add docker compose support#110

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pszymkowiak merged 6 commits intortk-ai:masterfrom
polaminggkub-debug:feat/docker-compose-support
Feb 17, 2026
Merged

feat(docker): add docker compose support#110
pszymkowiak merged 6 commits intortk-ai:masterfrom
polaminggkub-debug:feat/docker-compose-support

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Summary

  • Adds token-optimized output for docker compose ps, docker compose logs, and docker compose build
  • Unsupported compose subcommands (up, down, restart, etc.) pass through directly
  • Includes 11 unit tests (8 compose + 3 for existing compact_ports)

Commands Added

Command Strategy Expected Savings
rtk docker compose ps Compact service table (name, image, status, ports) ~70%
rtk docker compose logs Deduplication via existing log engine ~60-80%
rtk docker compose build Summary line + service names + step count ~80%
Other compose subcommands Passthrough 0% (tracked)

Test plan

  • 11 unit tests pass (cargo test container::tests::)
  • Full suite: 324 tests pass
  • cargo fmt --all --check clean
  • cargo clippy --all-targets no new warnings
  • Manual test: cargo run -- docker compose ps produces compact output

Fixes #101

🤖 Generated with Claude Code

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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src/container.rs Outdated
// 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 Outdated
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 Outdated
// 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:

  1. Search for " Up " (with surrounding spaces, matching docker's column formatting)
  2. Better: use docker compose ps --format (like the existing docker_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 Outdated
.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 Outdated
};

// 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 Outdated
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 Outdated
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.

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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.

polaminggkub-debug added a commit to polaminggkub-debug/rtk that referenced this pull request Feb 15, 2026
…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>
@pszymkowiak pszymkowiak self-assigned this Feb 16, 2026
@pszymkowiak
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i test the command and i have no error without docker running.
Nice work on the compose support! The --format approach for ps and the log engine reuse are solid choices. A few things to address:

  1. Silent failures when Docker daemon is not running (or no compose file)

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)
$ rtk docker compose logs → "🐳 Compose logs: 0 errors..." (exit 0)
$ rtk docker compose build → "🐳 Build:" (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
silently hidden.

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() {
let stderr = String::from_utf8_lossy(&output.stderr);
eprintln!("{}", stderr);
std::process::exit(output.status.code().unwrap_or(1));
}

Note: the existing docker_ps has the same bug, but let's not replicate it 3 more times.

  1. Minor: unnecessary Vec allocation for step counting

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()
.filter(|l| l.trim_start().starts_with("=> "))
.count();
if step_count > 0 {
result.push_str(&format!(" Steps: {}", step_count));
}

@pszymkowiak pszymkowiak self-requested a review February 16, 2026 09:49
@pszymkowiak pszymkowiak removed their assignment Feb 16, 2026
polaminggkub-debug added a commit to polaminggkub-debug/rtk that referenced this pull request Feb 17, 2026
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>
polaminggkub-debug and others added 5 commits February 17, 2026 20:26
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>
@polaminggkub-debug polaminggkub-debug force-pushed the feat/docker-compose-support branch from 0ae1fca to dcc2ca1 Compare February 17, 2026 13:34
@pszymkowiak
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thanks for work.
it's good but you remove the pipeline doc why ?
after that it's mergeable.

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>
@pszymkowiak pszymkowiak merged commit 510c491 into rtk-ai:master Feb 17, 2026
3 checks passed
heAdz0r added a commit to heAdz0r/rtk that referenced this pull request Feb 28, 2026
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>
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feat: Add support for docker compose

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