Fix API start script exit error #6
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- Fix DATABASE_URL validation to accept postgres:// and postgresql:// protocols (Zod's .url() validator rejects non-standard protocols) - Add clear console error output showing which env vars failed validation - Make it easier to debug Railway deployment env var issues
Summary of ChangesHello @Dexploarer, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! This pull request focuses on enhancing the robustness and user-friendliness of environment variable handling within the API's startup process. It resolves an issue where valid PostgreSQL connection strings were being rejected and introduces more informative error messages for failed environment variable validation. These changes aim to prevent API startup failures due to configuration mismatches and to streamline the debugging experience for developers. Highlights
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Caution Review failedThe pull request is closed. WalkthroughEnvironment variable validation enhanced in the core server config, with DATABASE_URL now strictly enforced as PostgreSQL connection strings and improved error reporting including human-readable validation messages and visual console output on parsing failures. Changes
Estimated code review effort🎯 2 (Simple) | ⏱️ ~8 minutes
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✨ Finishing touches
🧪 Generate unit tests (beta)
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| const parsed = envSchema.safeParse(process.env); | ||
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| if (!parsed.success) { | ||
| // Format errors in a human-readable way for console output | ||
| const errorMessages = parsed.error.issues.map((issue) => { | ||
| const path = issue.path.join("."); | ||
| return ` - ${path}: ${issue.message}`; | ||
| }); | ||
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| // Log structured data for log aggregation systems | ||
| logger.error( | ||
| { | ||
| validation: "failed", |
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Error Handling and Recovery
The current logic exits the process immediately if environment variable validation fails. While this is robust, it may be beneficial to provide more granular error reporting or fallback mechanisms, especially in development or CI environments. For example, you could allow the process to continue with warnings in non-production environments, or provide a summary of missing variables for easier debugging. This would improve developer experience and maintainability.
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PR Compliance Guide 🔍Below is a summary of compliance checks for this PR:
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Greptile OverviewGreptile SummaryThis PR fixes a critical environment validation issue preventing API startup by replacing Zod's strict Important Files Changed
Confidence score: 5/5
Sequence DiagramsequenceDiagram
participant User
participant "Application Start" as App
participant "env.ts" as Env
participant "Zod Schema" as Schema
participant "Logger" as Logger
participant "Console" as Console
participant "Process" as Process
User->>App: "Start application"
App->>Env: "Import env.ts module"
Env->>Schema: "safeParse(process.env)"
alt Validation Success
Schema-->>Env: "Return parsed.success = true"
Env-->>App: "Export validated env object"
App->>User: "Application starts successfully"
else Validation Failure
Schema-->>Env: "Return parsed.success = false with issues"
Env->>Env: "Format error messages from issues"
Env->>Logger: "Log structured error data"
Env->>Console: "Print formatted error box"
Console->>User: "Display validation errors"
Env->>Process: "process.exit(1)"
Process->>User: "Application terminates"
end
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Code Review
This pull request effectively addresses the API startup failure by correcting the DATABASE_URL validation and significantly improving the error reporting for environment variable issues. The changes make debugging deployment problems much easier. I've included a couple of suggestions to further refine the implementation for better code clarity and maintainability.
| .refine( | ||
| (val) => { | ||
| // Accept postgres:// or postgresql:// connection strings | ||
| // These are valid connection strings but may not pass standard URL validation | ||
| return val.startsWith("postgres://") || val.startsWith("postgresql://"); | ||
| }, | ||
| { | ||
| message: | ||
| "DATABASE_URL must be a valid PostgreSQL connection string (postgres:// or postgresql://)", | ||
| }, | ||
| ), |
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For improved conciseness and robustness, you can use a regular expression to validate the DATABASE_URL protocol. This is a common pattern for this type of string validation and makes the intent clearer with less code, while also removing the need for a multi-line function body and comments.
.refine(
(val) => /^postgres(ql)?:\/\//.test(val),
{
message:
"DATABASE_URL must be a valid PostgreSQL connection string (postgres:// or postgresql://)",
}
),| console.error( | ||
| "\n╔════════════════════════════════════════════════════════════╗", | ||
| ); | ||
| console.error( | ||
| "║ ENVIRONMENT VARIABLE VALIDATION FAILED ║", | ||
| ); | ||
| console.error( | ||
| "╠════════════════════════════════════════════════════════════╣", | ||
| ); | ||
| console.error( | ||
| "║ The following environment variables have issues: ║", | ||
| ); | ||
| console.error( | ||
| "╚════════════════════════════════════════════════════════════╝\n", | ||
| ); | ||
| console.error(errorMessages.join("\n")); | ||
| console.error( | ||
| "\n[Help] Check .env file and Railway environment variables.\n", | ||
| ); |
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To improve readability and performance, you can consolidate the multiple console.error calls into a single one. Building an array of strings and joining them for a single output call is cleaner and reduces I/O operations.
console.error(
[
"\n╔════════════════════════════════════════════════════════════╗",
"║ ENVIRONMENT VARIABLE VALIDATION FAILED ║",
"╠════════════════════════════════════════════════════════════╣",
"║ The following environment variables have issues: ║",
"╚════════════════════════════════════════════════════════════╝\n",
errorMessages.join("\n"),
"\n[Help] Check .env file and Railway environment variables.\n",
].join("\n")
);
User description
PR Type
Bug fix, Enhancement
Description
Fix DATABASE_URL validation to accept postgres:// and postgresql:// protocols
Add human-readable console error output for failed env var validation
Improve error messages with specific field paths and validation details
Make Railway deployment debugging easier with formatted error display
Diagram Walkthrough
File Walkthrough
env.ts
Fix DATABASE_URL validation and enhance error outputapps/core/server/config/env.ts
.url()validator with custom.refine()to acceptpostgres:// and postgresql:// protocols
.min(1)validation to ensure DATABASE_URL is requiredand messages
Railway log visibility
Railway environment variables
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Release Notes
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