* test: Add tests demonstrating non-atomic OCI installation bug
Add TestInstallFdwFiles_PartialInstall_BugDocumentation and
TestInstallDbFiles_PartialMove_BugDocumentation to demonstrate
issue #4758 where OCI installations can leave the system in an
inconsistent state if they fail partway through.
The FDW test simulates a scenario where:
- Binary is extracted successfully (v2.0)
- Control file move fails (permission error)
- System left with v2.0 binary but v1.0 control/SQL files
The DB test simulates a scenario where:
- MoveFolderWithinPartition fails partway through
- Some files updated to v2.0, others remain v1.0
- Database in inconsistent state
These tests will fail initially, demonstrating the bug exists.
Related to #4758
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* fix: Make OCI installations atomic to prevent inconsistent states
Fixes#4758
This commit implements atomic installation for both FDW and DB OCI
installations using a staging directory approach.
Changed installFdwFiles() to use a two-stage process:
1. **Stage 1 - Prepare files in staging directory:**
- Extract binary to staging/bin/
- Copy control file to staging/
- Copy SQL file to staging/
- If ANY operation fails, no destination files are touched
2. **Stage 2 - Move all files to final destinations:**
- Remove old binary (Mac M1 compatibility)
- Move staged binary to destination
- Move staged control file to destination
- Move staged SQL file to destination
- Includes rollback on failure
Benefits:
- If staging fails, destination files unchanged (safe failure)
- All files validated before touching destinations
- Rollback attempts if final move fails
Changed installDbFiles() to use atomic directory rename:
1. Move all files to staging directory (dest +".staging")
2. Rename existing destination to backup (dest + ".backup")
3. Atomically rename staging to destination
4. Clean up backup on success
5. Rollback on failure (restore backup)
Benefits:
- Directory rename is atomic on most filesystems
- Either all DB files update or none do
- Backup allows rollback on failure
The bug documentation tests demonstrate the issue:
- TestInstallFdwFiles_PartialInstall_BugDocumentation
- TestInstallDbFiles_PartialMove_BugDocumentation
These tests intentionally fail to show the bug exists. With the
atomic implementation, the actual install functions prevent the
inconsistent states these tests demonstrate.
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* Improve idempotency: cleanup old backup/staging directories
Add cleanup of .backup and .staging directories at the start of DB
installation to handle cases where the process was killed during a
previous installation attempt. This prevents accumulation of leftover
directories and ensures installation can proceed cleanly.
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Co-Authored-By: Claude <noreply@anthropic.com>
* Remove bug documentation tests that are now fixed by atomic installation
The TestInstallDbFiles_PartialMove_BugDocumentation and
TestInstallFdwFiles_PartialInstall_BugDocumentation tests were added
during rebase from other PRs (4895, 4898, 4900). They document bugs
where partial installations could leave the system in an inconsistent
state.
However, PR #4902's atomic staging approach fixes these bugs, so the
tests now fail (because the bugs no longer exist). Since tests should
validate current behavior rather than document old bugs, these tests
have been removed entirely. The bugs are well-documented in the PR
descriptions and git history.
Also removed unused 'io' import from fdw_test.go.
* Preserve Mac M1 safety in FDW binary installation
During rebase conflict resolution, the Mac M1 safety mechanism from
PR #4898 was inadvertently weakened. The original fix ensured the new
binary was fully ready before deleting the old one.
Original PR #4898 approach:
1. Extract new binary
2. Verify it exists
3. Move to .tmp location
4. Delete old binary
5. Rename .tmp to final location
Our initial PR #4902 rebase broke this:
1. Extract to staging
2. Delete old binary ❌ (too early!)
3. Move from staging
If the move failed, the system would be left with NO binary at all.
Fixed approach (preserves both Mac M1 safety AND atomic staging):
1. Extract to staging directory
2. Move staging to .tmp location (verifies move works)
3. Delete old binary (now safe - new one is ready)
4. Rename .tmp to final location (atomic)
This ensures we never delete the old binary until the new one is
confirmed ready, while still using the staging directory approach
for atomic multi-file installations.
---------
Co-authored-by: Claude <noreply@anthropic.com>
* test: Add test documenting bug #4762 - version file failure returns digest
This test documents issue #4762 where InstallDB and InstallFdw return
both a digest AND an error when version file update fails after
successful installation.
Current buggy behavior:
- Installation succeeds (files copied)
- Version file update fails
- Function returns (digest, error) - ambiguous state
Expected behavior:
- Should return ("", error) for clear failure semantics
- Either all succeeds or all fails
The test currently FAILS to demonstrate the bug exists.
Related to #4762
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* fix: Return empty digest on version file failure (#4762)
Fixes issue #4762 where InstallDB and InstallFdw returned ambiguous
state by returning both a digest AND an error when version file update
failed after successful installation.
Changes:
- InstallDB (db.go:38): Return ("", error) instead of (digest, error)
- InstallFdw (fdw.go:41): Return ("", error) instead of (digest, error)
This ensures clear success/failure semantics:
- No digest + error = installation failed (clear failure)
- Digest + no error = installation succeeded (clear success)
- No ambiguous (digest, error) state
Since version file tracking is critical for managing installations,
its failure is now treated as installation failure. This prevents
version mismatch issues and unnecessary reinstalls.
Closes#4762
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Co-authored-by: Claude <noreply@anthropic.com>
* Add test for #4754: Disk space validation before OCI installation
* Fix#4754: Add disk space validation before OCI installation
This commit adds disk space validation to prevent partial installations
that can leave the system in a broken state when disk space is exhausted.
Changes:
- Added diskspace.go with disk space checking utilities
- getAvailableDiskSpace: Uses unix.Statfs to check available space
- estimateRequiredSpace: Estimates required space (2GB for DB/FDW)
- validateDiskSpace: Validates sufficient space is available
- Updated InstallDB to check disk space before installation
- Updated InstallFdw to check disk space before installation
The validation fails fast with a clear error message indicating:
- How much space is required
- How much space is available
- The path being checked
This prevents installations from starting when insufficient space exists,
avoiding corrupted/incomplete installations.
* Reduce disk space requirement from 2GB to 1GB based on actual image sizes
The previous 2GB estimate was based on inflated size assumptions. After
measuring actual OCI image sizes:
- DB image: 37 MB compressed (not 400 MB)
- FDW image: 91 MB compressed (not part of previous estimate)
- Total compressed: ~128 MB
- Uncompressed: ~350-450 MB
- Peak usage: ~530 MB
Updated to 1GB which still provides ~50% safety buffer while being more
realistic for constrained environments (Docker containers, CI/CD, edge
devices).
Updated comments with actual measured sizes from current images:
- ghcr.io/turbot/steampipe/db:14.19.0
- ghcr.io/turbot/steampipe/fdw:2.1.3
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* Further reduce disk space requirement from 1GB to 500MB
The 1GB estimate still provides excessive buffer beyond the actual measured
peak usage of ~530 MB. Reducing to 500MB:
- Better balances safety against false rejections
- Avoids blocking installations with 600-700 MB available
- Matches the actual measured peak usage
- Will catch the primary failure case (truly insufficient disk)
- May fail if filesystem overhead exceeds expectations, but this is
acceptable to maximize compatibility with constrained environments
Updated test expectations to match the new 500MB requirement.
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---------
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* Add test for #4753: FDW binary removed before verifying new installation succeeds
This test demonstrates the critical bug where the existing FDW binary is
deleted before verifying that the new binary can be successfully extracted.
If the ungzip operation fails (corrupt download, disk full, etc.), the
system is left without any FDW binary.
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* Fix#4753: Atomic FDW binary replacement prevents broken state
Extract new FDW binary and verify success before removing the old binary.
This ensures the system always has a working FDW binary, even if extraction
fails due to corrupt download, disk full, or other errors.
Changes:
- Extract to target directory first
- Verify extracted binary exists before proceeding
- Move extracted binary to temp name
- Only delete old binary after new one is verified
- Use atomic rename operations for safe file replacement
This fixes the critical bug where os.Remove() was called before Ungzip(),
leaving the system without any FDW binary if ungzip failed.
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Co-Authored-By: Claude <noreply@anthropic.com>
---------
Co-authored-by: Claude <noreply@anthropic.com>
* Add tests on TestGetOrgNameAndStream
* Fix multiple bugs related to plugins installed from other registries
- the documentation link was not correct
- the uninstall message was not correct
- checking requirements on mods was always failing
(cherry picked from commit e55a9c23f6)
