Fix environment to config.json parser #589

2024-12-21T07:13:34-08:00

KagurazakaNyaa commented

2024-12-21 07:13:34 -08:00

(Migrated from github.com)

The current docker-entrypoint.sh will write all numeric and boolean environment variables to config.json as strings, which will make most configurations invalid.
This Pull Request attempts to read the parameter in JSON format first. If it cannot be parsed, it is considered a string.

before

{
  "logger": {
    "files": true,
    "level": "trace",
    "__valid_levels": "fatal, error, warn, info, http, debug, trace"
  },
  "universalPolarityEverywhere": "true",
  "unlockAllShipFeatures": "false",
  "httpsPort": "443",
  "spoofMasteryRank": "-1",
  "unlockAllShipDecorations": "false",
  "skipStoryModeChoice": "false",
  "autoCreateAccount": "true",
  "httpPort": "80",
  "skipAllDialogue": "false",
  "unlockAllSkins": "false",
  "completeAllQuests": "false",
  "unlockAllFlavourItems": "false",
  "mongodbUrl": "mongodb://mongodb:27017/",
  "unlockAllQuests": "false",
  "unlockAllScans": "false",
  "unlockAllMissions": "false",
  "skipTutorial": "false",
  "myAddress": "localhost",
  "infiniteResources": "false"
}

after

{
  "logger": {
    "files": true,
    "level": "trace",
    "__valid_levels": "fatal, error, warn, info, http, debug, trace"
  },
  "universalPolarityEverywhere": true,
  "unlockAllShipFeatures": false,
  "httpsPort": 443,
  "spoofMasteryRank": -1,
  "unlockAllShipDecorations": false,
  "skipStoryModeChoice": false,
  "autoCreateAccount": true,
  "httpPort": 80,
  "skipAllDialogue": false,
  "unlockAllSkins": false,
  "completeAllQuests": false,
  "unlockAllFlavourItems": false,
  "mongodbUrl": "mongodb://mongodb:27017/",
  "unlockAllQuests": false,
  "unlockAllScans": false,
  "unlockAllMissions": false,
  "skipTutorial": false,
  "myAddress": "localhost",
  "infiniteResources": false
}

The current `docker-entrypoint.sh` will write all numeric and boolean environment variables to `config.json` as strings, which will make most configurations invalid. This Pull Request attempts to read the parameter in JSON format first. If it cannot be parsed, it is considered a string. before ```json { "logger": { "files": true, "level": "trace", "__valid_levels": "fatal, error, warn, info, http, debug, trace" }, "universalPolarityEverywhere": "true", "unlockAllShipFeatures": "false", "httpsPort": "443", "spoofMasteryRank": "-1", "unlockAllShipDecorations": "false", "skipStoryModeChoice": "false", "autoCreateAccount": "true", "httpPort": "80", "skipAllDialogue": "false", "unlockAllSkins": "false", "completeAllQuests": "false", "unlockAllFlavourItems": "false", "mongodbUrl": "mongodb://mongodb:27017/", "unlockAllQuests": "false", "unlockAllScans": "false", "unlockAllMissions": "false", "skipTutorial": "false", "myAddress": "localhost", "infiniteResources": "false" } ``` after ```json { "logger": { "files": true, "level": "trace", "__valid_levels": "fatal, error, warn, info, http, debug, trace" }, "universalPolarityEverywhere": true, "unlockAllShipFeatures": false, "httpsPort": 443, "spoofMasteryRank": -1, "unlockAllShipDecorations": false, "skipStoryModeChoice": false, "autoCreateAccount": true, "httpPort": 80, "skipAllDialogue": false, "unlockAllSkins": false, "completeAllQuests": false, "unlockAllFlavourItems": false, "mongodbUrl": "mongodb://mongodb:27017/", "unlockAllQuests": false, "unlockAllScans": false, "unlockAllMissions": false, "skipTutorial": false, "myAddress": "localhost", "infiniteResources": false } ```

coderabbitai[bot] commented

2024-12-21 07:13:41 -08:00

(Migrated from github.com)

Walkthrough

The pull request introduces a modification to the docker-entrypoint.sh script, specifically focusing on improving the JSON configuration processing mechanism. The primary change involves enhancing the jq command used for updating the config.json file with more robust error handling.

The key modification is in how environment variables are parsed and added to the configuration. The updated jq command now includes a more sophisticated approach to handling configuration values. It attempts to parse the input value as JSON first, and if that fails, it falls back to using the original value. This change provides greater flexibility in processing configuration values, allowing both JSON-formatted inputs and plain string values to be correctly integrated into the configuration file.

The modification aims to make the configuration loading process more resilient to different types of input, ensuring that the script can handle various environment variable formats without breaking the configuration generation process. The rest of the script's functionality remains unchanged, maintaining the existing logic for package installation and server startup.

Sequence Diagram

sequenceDiagram
    participant Entrypoint as docker-entrypoint.sh
    participant JQ as jq Command
    participant ConfigFile as config.json

    Entrypoint->>JQ: Attempt to parse value as JSON
    alt JSON Parsing Successful
        JQ-->>ConfigFile: Add parsed JSON value
    else JSON Parsing Fails
        JQ-->>ConfigFile: Add original value
    end

This sequence diagram illustrates the enhanced error handling mechanism introduced in the docker-entrypoint.sh script. It shows how the jq command now attempts to parse the input value as JSON, falling back to the original value if parsing fails, before updating the config.json file.

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## Walkthrough The pull request introduces a modification to the `docker-entrypoint.sh` script, specifically focusing on improving the JSON configuration processing mechanism. The primary change involves enhancing the `jq` command used for updating the `config.json` file with more robust error handling. The key modification is in how environment variables are parsed and added to the configuration. The updated `jq` command now includes a more sophisticated approach to handling configuration values. It attempts to parse the input value as JSON first, and if that fails, it falls back to using the original value. This change provides greater flexibility in processing configuration values, allowing both JSON-formatted inputs and plain string values to be correctly integrated into the configuration file. The modification aims to make the configuration loading process more resilient to different types of input, ensuring that the script can handle various environment variable formats without breaking the configuration generation process. The rest of the script's functionality remains unchanged, maintaining the existing logic for package installation and server startup. ## Sequence Diagram ```mermaid sequenceDiagram participant Entrypoint as docker-entrypoint.sh participant JQ as jq Command participant ConfigFile as config.json Entrypoint->>JQ: Attempt to parse value as JSON alt JSON Parsing Successful JQ-->>ConfigFile: Add parsed JSON value else JSON Parsing Fails JQ-->>ConfigFile: Add original value end ``` This sequence diagram illustrates the enhanced error handling mechanism introduced in the `docker-entrypoint.sh` script. It shows how the `jq` command now attempts to parse the input value as JSON, falling back to the original value if parsing fails, before updating the `config.json` file.      --- Thank you for using CodeRabbit. We offer it for free to the OSS community and would appreciate your support in helping us grow. 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coderabbitai[bot] (Migrated from github.com) reviewed 2024-12-21 07:15:13 -08:00

coderabbitai[bot] (Migrated from github.com) left a comment

Actionable comments posted: 0

🧹 Nitpick comments (3)

docker-entrypoint.sh (3)
18-19: Consider adding validation and error logging.

While the type conversion works, consider these improvements for better debugging and reliability:

Add error logging when JSON parsing fails

Validate the final JSON structure
-  jq --arg variable "$var" --arg value "$val" '.[$variable] += try [$value|fromjson][] catch $value' config.json > config.tmp
-  mv config.tmp config.json
+  if ! jq --arg variable "$var" --arg value "$val" '.[$variable] += try [$value|fromjson][] catch ($value | . as $v | if $v == "true" then true elif $v == "false" then false elif $v | tonumber? then tonumber else $v end)' config.json > config.tmp; then
+    echo "Error: Failed to update config.json with $var=$val" >&2
+    exit 1
+  fi
+  mv config.tmp config.json
+  # Validate the resulting JSON structure
+  if ! jq 'type' config.json > /dev/null 2>&1; then
+    echo "Error: Invalid JSON structure in config.json" >&2
+    exit 1
+  fi
Line range hint 13-17: Consider more robust environment variable processing.

The current variable name processing using multiple sed commands could be fragile. Consider using more robust parameter expansion or a single sed command with proper escaping.
-  var=$(echo "${config}" | tr '[:upper:]' '[:lower:]' | sed 's/app_//g' | sed -E 's/_([a-z])/\U\1/g' | sed 's/=.*//g')
-  val=$(echo "${config}" | sed 's/.*=//g')
+  # More robust parameter expansion
+  local key="${config%%=*}"
+  local val="${config#*=}"
+  # Single sed command for name transformation
+  var=$(echo "${key,,}" | sed -E 's/^app_//; s/_([a-z])/\U\1/g')
Line range hint 1-2: Consider adding more comprehensive error handling and documentation.

The script would benefit from:

Additional error handling flags (set -euo pipefail)

Input validation for environment variables

Documentation of expected environment variables
 #!/bin/bash
-set -e
+set -euo pipefail
+
+# Configuration script for SpaceNinjaServer
+# Environment variables:
+#   APP_*: Configuration variables that will be written to config.json
+#   Example: APP_PORT=443 will set "port": 443 in config.json
+
+# Validate required tools
+if ! command -v jq >/dev/null 2>&1; then
+    echo "Error: jq is required but not installed." >&2
+    exit 1
+fi

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📒 Files selected for processing (1)

docker-entrypoint.sh (1 hunks)

🔇 Additional comments (1)

docker-entrypoint.sh (1)

18-18: LGTM! The jq command now correctly handles type conversion.

The modified command successfully addresses the original issue by attempting to parse values as JSON first, which correctly converts numeric and boolean strings to their proper types while preserving regular strings.

**Actionable comments posted: 0** <details> <summary>🧹 Nitpick comments (3)</summary><blockquote> <details> <summary>docker-entrypoint.sh (3)</summary><blockquote> `18-19`: **Consider adding validation and error logging.** While the type conversion works, consider these improvements for better debugging and reliability: 1. Add error logging when JSON parsing fails 2. Validate the final JSON structure ```diff - jq --arg variable "$var" --arg value "$val" '.[$variable] += try [$value|fromjson][] catch $value' config.json > config.tmp - mv config.tmp config.json + if ! jq --arg variable "$var" --arg value "$val" '.[$variable] += try [$value|fromjson][] catch ($value | . as $v | if $v == "true" then true elif $v == "false" then false elif $v | tonumber? then tonumber else $v end)' config.json > config.tmp; then + echo "Error: Failed to update config.json with $var=$val" >&2 + exit 1 + fi + mv config.tmp config.json + # Validate the resulting JSON structure + if ! jq 'type' config.json > /dev/null 2>&1; then + echo "Error: Invalid JSON structure in config.json" >&2 + exit 1 + fi ``` --- Line range hint `13-17`: **Consider more robust environment variable processing.** The current variable name processing using multiple sed commands could be fragile. Consider using more robust parameter expansion or a single sed command with proper escaping. ```diff - var=$(echo "${config}" | tr '[:upper:]' '[:lower:]' | sed 's/app_//g' | sed -E 's/_([a-z])/\U\1/g' | sed 's/=.*//g') - val=$(echo "${config}" | sed 's/.*=//g') + # More robust parameter expansion + local key="${config%%=*}" + local val="${config#*=}" + # Single sed command for name transformation + var=$(echo "${key,,}" | sed -E 's/^app_//; s/_([a-z])/\U\1/g') ``` --- Line range hint `1-2`: **Consider adding more comprehensive error handling and documentation.** The script would benefit from: 1. Additional error handling flags (`set -euo pipefail`) 2. Input validation for environment variables 3. Documentation of expected environment variables ```diff #!/bin/bash -set -e +set -euo pipefail + +# Configuration script for SpaceNinjaServer +# Environment variables: +# APP_*: Configuration variables that will be written to config.json +# Example: APP_PORT=443 will set "port": 443 in config.json + +# Validate required tools +if ! command -v jq >/dev/null 2>&1; then + echo "Error: jq is required but not installed." >&2 + exit 1 +fi ``` </blockquote></details> </blockquote></details> <details> <summary>📜 Review details</summary> **Configuration used: .coderabbit.yaml** **Review profile: CHILL** **Plan: Pro** <details> <summary>📥 Commits</summary> Reviewing files that changed from the base of the PR and between 144ac5850c17d083328fc057b220eab15796fe2a and 81cb5f0a0d8314d362c13daac45fe5db3d0cd3c5. </details> <details> <summary>📒 Files selected for processing (1)</summary> * `docker-entrypoint.sh` (1 hunks) </details> <details> <summary>🔇 Additional comments (1)</summary> <details> <summary>docker-entrypoint.sh (1)</summary> `18-18`: **LGTM! The jq command now correctly handles type conversion.** The modified command successfully addresses the original issue by attempting to parse values as JSON first, which correctly converts numeric and boolean strings to their proper types while preserving regular strings. </details> </details> </details>

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Reference: OpenWF/SpaceNinjaServer#589