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[BV-599] Kubeconfig helper #281

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Franr
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@Franr Franr commented Sep 7, 2024

What?

Added a new sub-command discover in kubectl that scan and configure clusters from layers that contains metadata.

Why?

  • To facilitate the management of multiple K8S clusters.

References

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coveralls commented Sep 21, 2024

Pull Request Test Coverage Report for Build 12342085241

Details

  • 55 of 74 (74.32%) changed or added relevant lines in 4 files are covered.
  • 45 unchanged lines in 5 files lost coverage.
  • Overall coverage increased (+0.5%) to 60.525%

Changes Missing Coverage Covered Lines Changed/Added Lines %
leverage/modules/kubectl.py 3 6 50.0%
leverage/containers/kubectl.py 44 51 86.27%
leverage/path.py 7 16 43.75%
Files with Coverage Reduction New Missed Lines %
leverage/path.py 1 71.1%
leverage/modules/kubectl.py 2 72.41%
modules/kubectl.py 3 72.41%
containers/kubectl.py 8 91.21%
path.py 31 71.1%
Totals Coverage Status
Change from base Build 11670882625: 0.5%
Covered Lines: 2524
Relevant Lines: 4034

💛 - Coveralls

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coderabbitai bot commented Nov 9, 2024

Walkthrough

The pull request introduces several enhancements to the KubeCtlContainer class, adding a new ClusterInfo data class and modifying the configure method to accept it as an optional parameter. New methods for cluster scanning and discovery are implemented, improving cluster management capabilities. The auth module's file handling is updated to ensure robustness in accessing configuration files. Additionally, the kubectl module sees the introduction of a new command for cluster discovery, and the PathsHandler class is enhanced with methods for updating the current working directory and checking paths. Test coverage is expanded for these functionalities.

Changes

File Change Summary
leverage/containers/kubectl.py Added ClusterInfo data class; updated configure method; added _scan_clusters and discover methods.
leverage/modules/auth.py Updated file opening mechanism in get_profiles for improved path handling.
leverage/modules/kubectl.py Added discover command; updated shell and configure methods to include layer checks.
leverage/path.py Added update_cwd method; updated check_for_layer_location and check_for_cluster_layer methods to accept a path parameter.
pyproject.toml Added dependency simple-term-menu = "1.6.4".
tests/test_containers/test_kubectl.py Added tests for _scan_clusters and discover methods.
tests/test_modules/test_auth.py Updated open_side_effect function and assertions in tests for improved file handling.

Assessment against linked issues

Objective Addressed Explanation
Support for leverage terraform apply --all-layers command (#123) Changes do not implement the required command structure.

🐰 In the meadow, I hop with glee,
New clusters found, oh what a spree!
With paths that lead us here and there,
Configs updated with utmost care.
Discovering layers, a joyful quest,
In the world of Kube, we are truly blessed! 🌼

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@Franr Franr marked this pull request as ready for review November 23, 2024 17:03
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Actionable comments posted: 6

🧹 Outside diff range and nitpick comments (10)
leverage/modules/auth.py (1)

Line range hint 1-146: Consider enhancing credential security measures.

While the core functionality is solid, consider implementing these security best practices for credential handling:

  1. Set restrictive file permissions (600) when creating/updating credential files
  2. Implement file locking during credential updates to prevent race conditions
  3. Securely overwrite old credentials before deletion

Here's a suggested implementation approach:

import os
import fcntl
from pathlib import Path

def secure_write_credentials(file_path: Path, content: str):
    # Create file with restricted permissions
    with open(file_path, 'w') as f:
        os.chmod(file_path, 0o600)
        fcntl.flock(f, fcntl.LOCK_EX)
        try:
            f.write(content)
            f.flush()
            os.fsync(f.fileno())
        finally:
            fcntl.flock(f, fcntl.LOCK_UN)

Would you like me to create an issue to track these security enhancements?

tests/test_containers/test_kubectl.py (5)

128-130: Fix grammatical error in docstring.

The docstring has a grammatical error. Consider rewording it to:
"Test that we can find valid metadata.yaml files present in the filesystem tree path where we are located."


132-140: Combine nested with statements and add negative test cases.

  1. The nested with statements can be combined for better readability.
  2. Consider adding negative test cases to verify behavior when:
    • metadata.yaml is not found
    • YAML is invalid
    • cluster type is not "k8s-eks-cluster"
-    with mock.patch("os.walk") as mock_walk:
-        with patch("builtins.open"):
-            with mock.patch("ruamel.yaml.safe_load") as mock_yaml:
+    with mock.patch("os.walk") as mock_walk, \
+         patch("builtins.open"), \
+         mock.patch("ruamel.yaml.safe_load") as mock_yaml:
🧰 Tools
🪛 Ruff (0.7.0)

132-133: Use a single with statement with multiple contexts instead of nested with statements

Combine with statements

(SIM117)


141-145: Consider testing multiple cluster scenarios.

The test only verifies the first found cluster using next(). Consider testing scenarios with multiple clusters to ensure the generator works correctly for all cases.


156-161: Combine nested with statements and add edge cases.

  1. The nested with statements can be combined for better readability.
  2. Consider adding test cases for:
    • User canceling selection (TerminalMenu returns None)
    • No clusters found (_scan_clusters returns empty list)
    • Invalid cluster data
-    with patch.object(kubectl_container, "_scan_clusters", return_value=[(Path.cwd(), mocked_cluster_data)]):
-        with patch("simple_term_menu.TerminalMenu") as mkd_show:
-            mkd_show.return_value.show.return_value = 0  # simulate choosing the first result
-            with patch.object(kubectl_container.paths, "update_cwd") as mkd_update:
-                with patch.object(kubectl_container, "configure") as mkd_configure:
+    with patch.object(kubectl_container, "_scan_clusters", return_value=[(Path.cwd(), mocked_cluster_data)]), \
+         patch("simple_term_menu.TerminalMenu") as mkd_show, \
+         patch.object(kubectl_container.paths, "update_cwd") as mkd_update, \
+         patch.object(kubectl_container, "configure") as mkd_configure:
🧰 Tools
🪛 Ruff (0.7.0)

156-157: Use a single with statement with multiple contexts instead of nested with statements

(SIM117)


159-160: Use a single with statement with multiple contexts instead of nested with statements

(SIM117)


163-164: Add more specific assertions.

The current assertions only verify that methods were called and type checking. Consider adding assertions for:

  1. The actual values passed to update_cwd
  2. The cluster info data passed to configure matches mocked_cluster_data
# Example assertions to add:
assert mkd_update.call_args[0][0] == Path.cwd()
cluster_info = mkd_configure.call_args[0][0]
assert cluster_info.cluster_name == "test"
assert cluster_info.profile == "test"
assert cluster_info.region == "us-east-1"
tests/test_modules/test_auth.py (1)

199-210: Add error handling for missing files.

The changes look good overall, with improved type hints and special file handling. However, consider adding error handling for cases where the file doesn't exist in data_dict.

Consider this improvement:

 def open_side_effect(name: PosixPath, *args, **kwargs):
     """
     Everytime we call open(), this side effect will try to get the value from data_dict rather than reading a disk file.
+
+    Args:
+        name: Path to the file to mock
+        *args: Additional arguments passed to open()
+        **kwargs: Additional keyword arguments passed to open()
+
+    Returns:
+        A mock file object with the specified content
+
+    Raises:
+        FileNotFoundError: If the file doesn't exist in data_dict
     """
     if str(name).endswith("config.tf"):
         read_data = FILE_CONFIG_TF
     elif str(name).endswith("locals.tf"):
         read_data = FILE_LOCALS_TF
     else:
+        if str(name) not in data_dict:
+            raise FileNotFoundError(f"Mock file not found: {name}")
         read_data = data_dict[name]

     return mock.mock_open(read_data=read_data)()
leverage/path.py (1)

5-5: Remove redundant import

The pathlib import is unnecessary since Path is already imported directly from pathlib.

-import pathlib
🧰 Tools
🪛 Ruff (0.7.0)

5-5: pathlib imported but unused

Remove unused import: pathlib

(F401)

leverage/containers/kubectl.py (2)

15-19: Add a docstring to the ClusterInfo data class

While the ClusterInfo data class is straightforward, adding a docstring would improve code readability and provide clarity on its purpose and usage.


89-89: Use != operator instead of not == for better readability

In line 89, consider replacing not d[0] == "." with d[0] != "." to improve readability and align with common Python practices.

Apply this change:

-dirs[:] = [d for d in dirs if not d[0] == "."]
+dirs[:] = [d for d in dirs if d[0] != "."]
🧰 Tools
🪛 Ruff (0.7.0)

89-89: Use d[0] != "." instead of not d[0] == "."

Replace with != operator

(SIM201)

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between e92f56e and 7ca0580.

⛔ Files ignored due to path filters (1)
  • poetry.lock is excluded by !**/*.lock
📒 Files selected for processing (7)
  • leverage/containers/kubectl.py (3 hunks)
  • leverage/modules/auth.py (1 hunks)
  • leverage/modules/kubectl.py (1 hunks)
  • leverage/path.py (3 hunks)
  • pyproject.toml (1 hunks)
  • tests/test_containers/test_kubectl.py (2 hunks)
  • tests/test_modules/test_auth.py (2 hunks)
🧰 Additional context used
🪛 Ruff (0.7.0)
leverage/containers/kubectl.py

89-89: Use d[0] != "." instead of not d[0] == "."

Replace with != operator

(SIM201)

leverage/path.py

5-5: pathlib imported but unused

Remove unused import: pathlib

(F401)

tests/test_containers/test_kubectl.py

132-133: Use a single with statement with multiple contexts instead of nested with statements

Combine with statements

(SIM117)


156-157: Use a single with statement with multiple contexts instead of nested with statements

(SIM117)


159-160: Use a single with statement with multiple contexts instead of nested with statements

(SIM117)

🔇 Additional comments (8)
leverage/modules/kubectl.py (3)

36-38: LGTM! Verify cluster layer check behavior.

The addition of the cluster layer check before configuration is appropriate and consistent with the shell command pattern.

Let's verify the implementation:

✅ Verification successful

Let me gather more information about the implementation and test coverage.


Implementation and test coverage for cluster layer check verified

The implementation is properly done with:

  • Clear error handling that raises ExitError if not in cluster layer
  • Appropriate error message for user guidance
  • Test coverage that verifies the error case
  • Proper integration with the existing layer location checking mechanism
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify the implementation of check_for_cluster_layer
# Look for the method definition and its error handling

ast-grep --pattern 'def check_for_cluster_layer($_) {
  $$$
}'

# Look for test coverage
rg -l "test.*check_for_cluster_layer" -g "test_*.py"

Length of output: 138


Script:

#!/bin/bash
# Check the implementation of check_for_cluster_layer
rg "def check_for_cluster_layer" -A 10

# Check the test implementation
cat tests/test_path.py

Length of output: 5998


40-43: Add docstring to explain the discover command's purpose.

While the implementation is clean and follows the established pattern, adding a docstring would improve clarity for users and maintainers.

Let's verify the discover implementation:

 @kubectl.command(context_settings=CONTEXT_SETTINGS)
 @pass_container
 def discover(kctl: KubeCtlContainer):
+    """Discover and select available EKS clusters in the current context."""
     kctl.discover()
✅ Verification successful

Let's gather more information about the implementation and test coverage.


Docstring suggestion is valid, but implementation is well-tested and documented

The discover command is already well-implemented in the container with comprehensive documentation and test coverage:

  • Container's discover() method has a clear docstring explaining it scans for k8s clusters and presents a menu
  • Implementation is thoroughly tested in test_discover() function
  • The command follows the established pattern consistently

Suggested docstring addition:

@kubectl.command(context_settings=CONTEXT_SETTINGS)
@pass_container
def discover(kctl: KubeCtlContainer):
    """Discover and select available Kubernetes clusters in the current context.
    
    Scans subdirectories for cluster metadata files and presents an interactive menu to configure kubectl."""
    kctl.discover()
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify the discover implementation
# Look for the discover method implementation and its test coverage

# Check the container implementation
ast-grep --pattern 'def discover($_) {
  $$$
}'

# Look for test coverage
rg -l "test.*discover" -g "test_*.py"

Length of output: 127


Script:

#!/bin/bash
# Check the discover implementation in the container
rg "def discover" -A 10

# Check the test implementation
cat tests/test_containers/test_kubectl.py

Length of output: 7781


28-28: LGTM! Verify path check behavior.

The addition of the layer location check before starting the shell is a good defensive programming practice.

Let's verify the behavior of this check:

✅ Verification successful

Path check implementation verified and secure

The check_for_layer_location method in leverage/path.py implements proper validation:

  • Prevents execution in configuration directories
  • Prevents execution in project/account roots
  • Ensures presence of Terraform files (*.tf) in the current directory
  • Raises clear error messages with appropriate exit codes

The method is well-tested as evidenced by its usage across multiple modules (terraform, kubectl, aws) and test coverage in tests/test_path.py.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify the implementation of check_for_layer_location
# Look for the method definition and its error handling

ast-grep --pattern 'def check_for_layer_location($_) {
  $$$
}'

# Look for test coverage
rg -l "test.*check_for_layer_location" -g "test_*.py"

Length of output: 121


Script:

#!/bin/bash
# Let's try different approaches to locate the check_for_layer_location implementation

# Search for the method name without AST matching
rg "check_for_layer_location" -A 5

# Look for files containing 'paths' in the leverage directory
fd "paths.py" leverage

# If we find the file, let's examine its content
fd "paths.py" leverage -x cat {}

Length of output: 4542


Script:

#!/bin/bash
# Let's examine the implementation in path.py
cat leverage/path.py

Length of output: 9820

pyproject.toml (1)

43-43: LGTM! Let's verify the dependency version.

The addition of simple-term-menu is appropriate for implementing cluster selection in the CLI. The exact version pinning follows the project's versioning strategy.

Let's verify the version and compatibility:

✅ Verification successful

✅ Dependency version and compatibility verified

The pinned version 1.6.4 is the latest stable release (as of December 2023) with no known security vulnerabilities. The package requires Python >=3.5, which is compatible with the project's Python 3.9-3.12 support range.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check latest version, Python compatibility, and security advisories for simple-term-menu

# Check PyPI for latest versions and Python compatibility
echo "Checking latest version and compatibility..."
curl -s https://pypi.org/pypi/simple-term-menu/json | jq '{
  latest_version: .info.version,
  python_requires: .info.requires_python,
  release_date: .releases["1.6.4"][0].upload_time
}'

# Check for security advisories
echo "Checking for security advisories..."
gh api graphql -f query='
{
  securityVulnerabilities(first: 5, ecosystem: PIP, package: "simple-term-menu") {
    nodes {
      advisory {
        summary
        severity
        publishedAt
      }
      vulnerableVersionRange
      firstPatchedVersion {
        identifier
      }
    }
  }
}'

Length of output: 822

leverage/modules/auth.py (1)

68-68: LGTM! Improved file path handling.

The change to use cli.paths.cwd for constructing file paths is a good improvement that makes the code more robust when executed from different working directories.

Let's verify the behavior with different working directory scenarios:

✅ Verification successful

File path handling is consistent and secure

The verification confirms that the use of cli.paths.cwd is appropriate and consistent with the codebase's file handling patterns:

  • The file under review is the only instance using cli.paths.cwd, specifically for Terraform file operations
  • Other file operations in auth.py use similar secure path handling via cli.paths.local_backend_tfvars
  • No unsafe path traversal patterns are used in file operations
  • All file opens have proper error handling with try-catch blocks
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check for potential file path edge cases in the codebase

# Check if there are any other direct file opens that might need similar fixes
rg -g '!test*' 'open\([^c].*\.tf[^)]' 

# Check for any potential path traversal or path manipulation
rg -g '!test*' '(\.\.\/|\.\/|\~\/|\$HOME)'

# Look for similar patterns that might need the same fix
ast-grep --pattern 'open($path)' 

Length of output: 216


Script:

#!/bin/bash
# Check for direct file opens with .tf files, escaping special chars properly
rg -g '!test*' 'open\(' -A 2 

# Check for path traversal patterns with properly escaped regex
rg -g '!test*' '\.\./|\./|~/|\$HOME'

# Look for file operations in auth.py to understand the context better
rg -g 'auth.py' 'open\(' -A 2

# Check how cli.paths.cwd is used across the codebase
rg 'cli\.paths\.cwd'

Length of output: 2755

tests/test_containers/test_kubectl.py (1)

1-8: LGTM: Import statements are well-organized.

The new imports are properly organized and necessary for the added test functions.

tests/test_modules/test_auth.py (1)

2-2: LGTM!

The PosixPath import is correctly placed and necessary for type hinting.

leverage/path.py (1)

269-289: LGTM! Verify impact on existing callers

The changes to make path optional with proper typing and validation look good. The error messages are clear and the validation sequence is correct.

Let's verify the impact on existing callers:

✅ Verification successful

All callers handle the optional path parameter correctly

The verification shows that all callers of both methods are using them correctly:

  • check_for_layer_location() is called without arguments in all 9 occurrences across container.py, kubectl.py, terraform.py, and aws.py, which correctly uses the default self.cwd
  • check_for_cluster_layer() is called without arguments in both production usages in kubectl.py and test code, which correctly uses the default behavior
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Find all callers of check_for_layer_location and check_for_cluster_layer
# to ensure they handle the new optional parameter correctly

echo "Searching for callers of check_for_layer_location:"
rg "check_for_layer_location\(" --type py -A 2

echo -e "\nSearching for callers of check_for_cluster_layer:"
rg "check_for_cluster_layer\(" --type py -A 2

Length of output: 2914

Comment on lines +127 to +164
def test_scan_clusters(kubectl_container: KubeCtlContainer):
"""
Test that we can find valid metadata.yaml presents in the down the path of the filesystem tree where we are staying.
"""
# mock and call
with mock.patch("os.walk") as mock_walk:
with patch("builtins.open"):
with mock.patch("ruamel.yaml.safe_load") as mock_yaml:
mock_walk.return_value = [
("/foo", ["bar"], ("baz",)),
("/foo/bar", [], ("spam", "metadata.yaml")),
]
mock_yaml.return_value = {"type": "k8s-eks-cluster"}

first_found = next(kubectl_container._scan_clusters())

# compare
assert first_found[0] == PosixPath("/foo/bar/")
assert first_found[1]["type"] == "k8s-eks-cluster"


def test_discover(kubectl_container: KubeCtlContainer):
"""
Test that, given a layer with a valid cluster file, we are able to call the k8s configuration routine.
"""
mocked_cluster_data = {
"type": "k8s-eks-cluster",
"data": {"cluster_name": "test", "profile": "test", "region": "us-east-1"},
}
with patch.object(kubectl_container, "_scan_clusters", return_value=[(Path.cwd(), mocked_cluster_data)]):
with patch("simple_term_menu.TerminalMenu") as mkd_show:
mkd_show.return_value.show.return_value = 0 # simulate choosing the first result
with patch.object(kubectl_container.paths, "update_cwd") as mkd_update:
with patch.object(kubectl_container, "configure") as mkd_configure:
kubectl_container.discover()

assert mkd_update.called
assert isinstance(mkd_configure.call_args_list[0][0][0], ClusterInfo)
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💡 Codebase verification

Add test cases for uncovered error paths

The following error paths need test coverage:

  • Error handling in _scan_clusters() for invalid YAML files and non-k8s cluster files
  • Error path in discover() when no clusters are found
  • Error path in discover() when menu selection is cancelled

The implementation shows several error paths that aren't covered by tests:

  1. In _scan_clusters():

    except Exception as exc:
        logger.warning(exc)
        continue
  2. In discover():

    if not cluster_files:
        raise ExitError(1, "No clusters found.")
    if menu_entry_index is None:
        # selection cancelled
        return

These paths should be tested to ensure robust error handling and maintain code coverage.

🔗 Analysis chain

Verify test coverage for error paths.

According to the coverage report, some lines lost coverage in the kubectl module. Consider adding test cases for error paths to improve the coverage and ensure robust error handling.


Let me gather more information about the test coverage and error paths.


Let me check the actual implementation of the KubeCtlContainer to better understand all error paths.


Let me try a different approach to find the implementation.


Let me check the entire file content to see all error paths and their current test coverage.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Find TODO/FIXME comments and untested error paths
rg -g '!tests/*' -A 5 'raise\s+\w+Error|TODO|FIXME' leverage/containers/kubectl.py

Length of output: 743


Script:

#!/bin/bash
# Check test coverage for error paths
rg -g 'tests/*' 'ExitError|raise' tests/test_containers/test_kubectl.py

Length of output: 107


Script:

#!/bin/bash
# Find the implementation of KubeCtlContainer
ast-grep --pattern 'class KubeCtlContainer {
  $$$
}'

Length of output: 55


Script:

#!/bin/bash
# Find the KubeCtlContainer implementation
rg -A 10 "class KubeCtlContainer" leverage/containers/kubectl.py

Length of output: 481


Script:

#!/bin/bash
# Get the full content of both implementation and test files
echo "=== Implementation file ==="
cat leverage/containers/kubectl.py
echo -e "\n=== Test file ==="
cat tests/test_containers/test_kubectl.py

Length of output: 12096

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🪛 Ruff (0.7.0)

132-133: Use a single with statement with multiple contexts instead of nested with statements

Combine with statements

(SIM117)


156-157: Use a single with statement with multiple contexts instead of nested with statements

(SIM117)


159-160: Use a single with statement with multiple contexts instead of nested with statements

(SIM117)

Comment on lines +173 to +180
def update_cwd(self, new_cwd):
self.cwd = new_cwd
acc_folder = new_cwd.relative_to(self.root_dir).parts[0]

self.account_config_dir = self.root_dir / acc_folder / "config"
account_config_path = self.account_config_dir / self.ACCOUNT_TF_VARS
self.account_conf = hcl2.loads(account_config_path.read_text())

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⚠️ Potential issue

Add validation and error handling to update_cwd

The method needs additional safeguards:

  1. Validate that new_cwd exists and is within the project
  2. Handle ValueError from relative_to() if new_cwd is not under root_dir
  3. Verify account config file exists
  4. Handle potential HCL parsing errors

Consider this safer implementation:

 def update_cwd(self, new_cwd):
+    if not new_cwd.exists():
+        raise ExitError(1, f"Directory {new_cwd} does not exist")
+    try:
+        relative_path = new_cwd.relative_to(self.root_dir)
+    except ValueError:
+        raise ExitError(1, f"Directory {new_cwd} is not within the project")
+
     self.cwd = new_cwd
-    acc_folder = new_cwd.relative_to(self.root_dir).parts[0]
+    acc_folder = relative_path.parts[0]
 
     self.account_config_dir = self.root_dir / acc_folder / "config"
     account_config_path = self.account_config_dir / self.ACCOUNT_TF_VARS
-    self.account_conf = hcl2.loads(account_config_path.read_text())
+    if not account_config_path.exists():
+        raise ExitError(1, f"Account config file not found: {account_config_path}")
+    try:
+        self.account_conf = hcl2.loads(account_config_path.read_text())
+    except Exception as e:
+        raise ExitError(1, f"Failed to parse account config: {e}")
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
def update_cwd(self, new_cwd):
self.cwd = new_cwd
acc_folder = new_cwd.relative_to(self.root_dir).parts[0]
self.account_config_dir = self.root_dir / acc_folder / "config"
account_config_path = self.account_config_dir / self.ACCOUNT_TF_VARS
self.account_conf = hcl2.loads(account_config_path.read_text())
def update_cwd(self, new_cwd):
if not new_cwd.exists():
raise ExitError(1, f"Directory {new_cwd} does not exist")
try:
relative_path = new_cwd.relative_to(self.root_dir)
except ValueError:
raise ExitError(1, f"Directory {new_cwd} is not within the project")
self.cwd = new_cwd
acc_folder = relative_path.parts[0]
self.account_config_dir = self.root_dir / acc_folder / "config"
account_config_path = self.account_config_dir / self.ACCOUNT_TF_VARS
if not account_config_path.exists():
raise ExitError(1, f"Account config file not found: {account_config_path}")
try:
self.account_conf = hcl2.loads(account_config_path.read_text())
except Exception as e:
raise ExitError(1, f"Failed to parse account config: {e}")

Comment on lines +127 to +131
cluster_info = ClusterInfo(
cluster_name=cluster_data["data"]["cluster_name"],
profile=cluster_data["data"]["profile"],
region=cluster_data["data"]["region"],
)
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🛠️ Refactor suggestion

Validate cluster data before creating ClusterInfo instance

Before creating a ClusterInfo instance, ensure that the necessary keys (cluster_name, profile, and region) are present in cluster_data["data"]. Missing keys could result in a KeyError. Adding validation will make the code more robust.

Apply this change:

+required_keys = {'cluster_name', 'profile', 'region'}
+if not required_keys.issubset(cluster_data["data"]):
+    logger.error("Cluster data is missing required information.")
+    return

Insert the above code before creating the ClusterInfo instance.

📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
cluster_info = ClusterInfo(
cluster_name=cluster_data["data"]["cluster_name"],
profile=cluster_data["data"]["profile"],
region=cluster_data["data"]["region"],
)
required_keys = {'cluster_name', 'profile', 'region'}
if not required_keys.issubset(cluster_data["data"]):
logger.error("Cluster data is missing required information.")
return
cluster_info = ClusterInfo(
cluster_name=cluster_data["data"]["cluster_name"],
profile=cluster_data["data"]["profile"],
region=cluster_data["data"]["region"],
)

Comment on lines +117 to +119
terminal_menu = simple_term_menu.TerminalMenu(
[f"{c[1]['data']['cluster_name']}: {str(c[0])}" for c in cluster_files], title="Clusters found:"
)
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🛠️ Refactor suggestion

Handle potential KeyError exceptions when accessing cluster data

When generating the menu options, accessing nested dictionary keys like c[1]['data']['cluster_name'] without checking if they exist may lead to a KeyError if the expected keys are missing. Consider adding checks or using the get method with default values to prevent the application from crashing due to unexpected data.

Apply this change:

-terminal_menu = simple_term_menu.TerminalMenu(
-    [f"{c[1]['data']['cluster_name']}: {str(c[0])}" for c in cluster_files], title="Clusters found:"
+terminal_menu = simple_term_menu.TerminalMenu(
+    [f"{c[1]['data'].get('cluster_name', 'Unknown')}: {str(c[0])}" for c in cluster_files], title="Clusters found:"
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
terminal_menu = simple_term_menu.TerminalMenu(
[f"{c[1]['data']['cluster_name']}: {str(c[0])}" for c in cluster_files], title="Clusters found:"
)
terminal_menu = simple_term_menu.TerminalMenu(
[f"{c[1]['data'].get('cluster_name', 'Unknown')}: {str(c[0])}" for c in cluster_files], title="Clusters found:"
)

leverage/containers/kubectl.py Outdated Show resolved Hide resolved
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Actionable comments posted: 0

🧹 Outside diff range and nitpick comments (3)
leverage/containers/kubectl.py (3)

15-20: Add field validation to ClusterInfo dataclass

Consider adding field validation to ensure the integrity of cluster information. This can prevent issues with empty or invalid values.

 @dataclass
 class ClusterInfo:
-    cluster_name: str
-    profile: str
-    region: str
+    cluster_name: str
+    profile: str
+    region: str
+
+    def __post_init__(self):
+        if not all([self.cluster_name, self.profile, self.region]):
+            raise ValueError("All fields must have non-empty values")

53-69: Consider logging the generated command for debugging

The command generation logic could benefit from debug logging to help troubleshoot configuration issues.

         if ci:
             # if you have the details, generate the command right away
             cmd = f"aws eks update-kubeconfig --region {ci.region} --name {ci.cluster_name} --profile {ci.profile}"
+            logger.debug(f"Generated command: {cmd}")
         else:
             # otherwise go get them from the layer
             logger.info("Retrieving k8s cluster information...")

87-89: Simplify directory filtering condition

The directory filtering condition can be simplified for better readability.

-            dirs[:] = [d for d in dirs if not d[0] == "."]
+            dirs[:] = [d for d in dirs if d[0] != "."]
🧰 Tools
🪛 Ruff (0.7.0)

89-89: Use d[0] != "." instead of not d[0] == "."

Replace with != operator

(SIM201)

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between 7ca0580 and 7e2f57c.

📒 Files selected for processing (1)
  • leverage/containers/kubectl.py (3 hunks)
🧰 Additional context used
🪛 Ruff (0.7.0)
leverage/containers/kubectl.py

89-89: Use d[0] != "." instead of not d[0] == "."

Replace with != operator

(SIM201)

🔇 Additional comments (1)
leverage/containers/kubectl.py (1)

134-141: Verify working directory update safety

The working directory update logic should verify the path exists and is accessible before updating.

✅ Verification successful

Let me gather more information about the path handling in the codebase, particularly focusing on the Path class implementation and its safety measures.


Based on the code analysis, I can now provide the final response:

Working directory update is safely implemented

The working directory update is safe because:

  • The layer_path is obtained through a controlled discovery process that validates the path exists via _scan_clusters
  • The path is always relative to the repository root and guest base path
  • The update_cwd method in PathsHandler uses relative_to which raises ValueError for invalid paths
  • The path is validated as a cluster layer through metadata.yaml content verification before updating
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check for potential path traversal or access issues in working directory updates

# Search for other working directory updates in the codebase
rg "update_cwd|working_dir" --type py

# Look for path validation patterns
rg "Path.*exists|Path.*resolve" --type py

Length of output: 1336


Script:

#!/bin/bash
# Check the Path class implementation and its usage
cat leverage/path.py

# Look for any path validation or sanitization in the kubectl container
cat leverage/containers/kubectl.py

# Check for any test cases related to path handling
cat tests/test_containers/test_kubectl.py

Length of output: 21825

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Actionable comments posted: 1

🧹 Outside diff range and nitpick comments (4)
leverage/containers/kubectl.py (4)

16-25: Add docstrings to new data structures.

The ClusterInfo dataclass and MetadataTypes enum look well-structured, but would benefit from docstrings describing their purpose and field descriptions.

Apply this change:

 @dataclass
 class ClusterInfo:
+    """Represents EKS cluster configuration details.
+
+    Attributes:
+        cluster_name: Name of the EKS cluster
+        profile: AWS profile to use for authentication
+        region: AWS region where the cluster is located
+    """
     cluster_name: str
     profile: str
     region: str

 class MetadataTypes(Enum):
+    """Enumeration of supported metadata types.
+
+    Attributes:
+        K8S_CLUSTER: Represents an EKS cluster configuration
+    """
     K8S_CLUSTER = "k8s-eks-cluster"

88-111: Enhance error handling specificity in _scan_clusters.

The generic Exception catch block could be more specific to handle different error cases appropriately.

Apply this change:

-                try:
+                try:
+                    if not cluster_file.is_file():
+                        continue
                     with open(cluster_file) as cluster_yaml_file:
                         data = ruamel.yaml.safe_load(cluster_yaml_file)
                     if data.get("type") != MetadataTypes.K8S_CLUSTER:
                         continue
-                except Exception as exc:
+                except (OSError, IOError) as exc:
+                    logger.warning(f"Failed to read {cluster_file}: {exc}")
+                    continue
+                except ruamel.yaml.YAMLError as exc:
+                    logger.warning(f"Invalid YAML in {cluster_file}: {exc}")
                     continue

112-144: Enhance user feedback in discover method.

Add logging statements to provide better visibility of the discovery process and user actions.

Apply this change:

     def discover(self):
+        logger.info("Scanning for Kubernetes clusters...")
         cluster_files = [(path, data) for path, data in self._scan_clusters()]
         if not cluster_files:
             raise ExitError(1, "No clusters found.")
 
+        logger.info(f"Found {len(cluster_files)} clusters")
         terminal_menu = simple_term_menu.TerminalMenu(
             [f"{c[1]['data']['cluster_name']}: {str(c[0])}" for c in cluster_files], title="Clusters found:"
         )
         menu_entry_index = terminal_menu.show()
         if menu_entry_index is None:
+            logger.info("Cluster selection cancelled")
             return
 
         layer_path = cluster_files[menu_entry_index][0]
         cluster_data = cluster_files[menu_entry_index][1]
+        logger.info(f"Selected cluster: {cluster_data['data']['cluster_name']}")

Security: Kubeconfig directory requires permission hardening

The code creates .kube/{project} directory without setting secure file permissions. This directory will store sensitive Kubernetes credentials obtained through AWS EKS. To prevent unauthorized access:

  • Set directory permissions to 700 (rwx------)
  • Set file permissions to 600 (rw-------) for the kubeconfig file
  • Add permission checks after mkdir() call

Example locations needing attention:

  • leverage/containers/kubectl.py:38: Add permission hardening after mkdir(parents=True)
🔗 Analysis chain

Line range hint 35-45: Verify kubeconfig file permissions.

The code creates a .kube directory but doesn't set secure file permissions. Consider setting appropriate permissions to protect sensitive AWS credentials.

Run the following script to check the current file permissions:

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check file permissions for kubeconfig directory and files

# Check if the .kube directory has secure permissions
find . -type d -name ".kube" -exec ls -ld {} \;

# Check if any kubeconfig files are world-readable
find . -type f -name "config" -path "*/.kube/*" -exec ls -l {} \;

Length of output: 119


Script:

#!/bin/bash
# Let's verify if the code actually sets any file permissions by searching for chmod/umask calls
rg -A 2 -B 2 "chmod|umask" leverage/containers/

# Also check for any file permission related code patterns using ast-grep
ast-grep --pattern 'mkdir($$$)' leverage/containers/
ast-grep --pattern 'chmod($$$)' leverage/containers/

# Let's also check the full context of the kubectl.py file to see if permissions are set elsewhere
cat leverage/containers/kubectl.py

Length of output: 5479

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📒 Files selected for processing (1)
  • leverage/containers/kubectl.py (3 hunks)

Comment on lines +58 to +74
def configure(self, ci: ClusterInfo = None):
"""
Add the given EKS cluster configuration to the .kube/ files.
"""
if ci:
# if you have the details, generate the command right away
cmd = f"aws eks update-kubeconfig --region {ci.region} --name {ci.cluster_name} --profile {ci.profile}"
else:
# otherwise go get them from the layer
logger.info("Retrieving k8s cluster information...")
with CustomEntryPoint(self, entrypoint=""):
cmd = self._get_eks_kube_config()

logger.info("Configuring context...")
with AwsCredsEntryPoint(self, override_entrypoint=""):
exit_code = self._start(add_eks_cluster_cmd)
exit_code = self._start(cmd)

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🛠️ Refactor suggestion

Enhance AWS command construction robustness.

The AWS command construction could be more robust by:

  1. Sanitizing input parameters to prevent command injection
  2. Validating region format
  3. Adding error handling for AWS CLI command execution

Apply this change:

+    def _validate_cluster_info(self, ci: ClusterInfo) -> bool:
+        """Validate cluster information parameters."""
+        if not ci.region.strip().isalnum():
+            logger.error("Invalid region format")
+            return False
+        if not ci.cluster_name.strip().isalnum():
+            logger.error("Invalid cluster name format")
+            return False
+        return True

     def configure(self, ci: ClusterInfo = None):
         if ci:
+            if not self._validate_cluster_info(ci):
+                raise ExitError(1, "Invalid cluster configuration")
+            # Sanitize inputs and use shlex.quote if needed
             cmd = f"aws eks update-kubeconfig --region {ci.region} --name {ci.cluster_name} --profile {ci.profile}"

Committable suggestion skipped: line range outside the PR's diff.

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Actionable comments posted: 1

♻️ Duplicate comments (3)
leverage/containers/kubectl.py (3)

58-74: ⚠️ Potential issue

Add input validation for ClusterInfo parameters.

The configure method should validate the ClusterInfo parameters before using them in the AWS command to prevent potential command injection and ensure valid input.

This is a duplicate of a previous review comment. The suggestion to add the _validate_cluster_info method and input validation remains valid.


121-123: ⚠️ Potential issue

Add error handling for menu option generation.

The menu option generation could fail with KeyError if the cluster data structure is invalid.

This is a duplicate of a previous review comment. The suggestion to use dict.get() with default values remains valid.


131-135: ⚠️ Potential issue

Validate cluster data before creating ClusterInfo instance.

Direct dictionary access without validation could raise KeyError if required fields are missing.

This is a duplicate of a previous review comment. The suggestion to validate required keys before creating the ClusterInfo instance remains valid.

🧹 Nitpick comments (1)
leverage/containers/kubectl.py (1)

1-25: Add type hints to ClusterInfo dataclass fields.

The new imports and type definitions look good. Consider adding type hints to the ClusterInfo dataclass fields for better type safety and IDE support.

 @dataclass
 class ClusterInfo:
-    cluster_name: str
-    profile: str
-    region: str
+    cluster_name: str
+    profile: str
+    region: str
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Plan: Pro

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📒 Files selected for processing (1)
  • leverage/containers/kubectl.py (3 hunks)
🔇 Additional comments (1)
leverage/containers/kubectl.py (1)

137-144: LGTM: Path handling for container working directory.

The path manipulation for updating the container working directory is implemented correctly, maintaining proper relative paths between host and container environments.

Comment on lines +88 to +111
def _scan_clusters(self):
"""
Scan all the subdirectories in search of "cluster" metadata files.
"""
for root, dirs, files in os.walk(self.paths.cwd):
# exclude hidden directories
dirs[:] = [d for d in dirs if d[0] != "."]

for file in files:
if file != self.METADATA_FILENAME:
continue

cluster_file = Path(root) / file
try:
with open(cluster_file) as cluster_yaml_file:
data = ruamel.yaml.safe_load(cluster_yaml_file)
if data.get("type") != MetadataTypes.K8S_CLUSTER.value:
continue
except Exception as exc:
logger.warning(exc)
continue
else:
yield Path(root), data

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🛠️ Refactor suggestion

Enhance error handling in _scan_clusters method.

The generic Exception catch block could mask specific issues. Consider handling specific exceptions and providing more detailed error messages.

-                try:
+                try:
                     with open(cluster_file) as cluster_yaml_file:
                         data = ruamel.yaml.safe_load(cluster_yaml_file)
                     if data.get("type") != MetadataTypes.K8S_CLUSTER.value:
                         continue
-                except Exception as exc:
+                except (OSError, IOError) as exc:
+                    logger.warning(f"Failed to read cluster file {cluster_file}: {exc}")
+                    continue
+                except ruamel.yaml.YAMLError as exc:
+                    logger.warning(f"Invalid YAML in cluster file {cluster_file}: {exc}")
                     continue
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
def _scan_clusters(self):
"""
Scan all the subdirectories in search of "cluster" metadata files.
"""
for root, dirs, files in os.walk(self.paths.cwd):
# exclude hidden directories
dirs[:] = [d for d in dirs if d[0] != "."]
for file in files:
if file != self.METADATA_FILENAME:
continue
cluster_file = Path(root) / file
try:
with open(cluster_file) as cluster_yaml_file:
data = ruamel.yaml.safe_load(cluster_yaml_file)
if data.get("type") != MetadataTypes.K8S_CLUSTER.value:
continue
except Exception as exc:
logger.warning(exc)
continue
else:
yield Path(root), data
def _scan_clusters(self):
"""
Scan all the subdirectories in search of "cluster" metadata files.
"""
for root, dirs, files in os.walk(self.paths.cwd):
# exclude hidden directories
dirs[:] = [d for d in dirs if d[0] != "."]
for file in files:
if file != self.METADATA_FILENAME:
continue
cluster_file = Path(root) / file
try:
with open(cluster_file) as cluster_yaml_file:
data = ruamel.yaml.safe_load(cluster_yaml_file)
if data.get("type") != MetadataTypes.K8S_CLUSTER.value:
continue
except (OSError, IOError) as exc:
logger.warning(f"Failed to read cluster file {cluster_file}: {exc}")
continue
except ruamel.yaml.YAMLError as exc:
logger.warning(f"Invalid YAML in cluster file {cluster_file}: {exc}")
continue
else:
yield Path(root), data

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