Support environment for cloudflare workers

Author: petyosi

.changeset/heavy-poems-fly.md

@@ -0,0 +1,5 @@
+---
+"@pydantic/logfire-cf-workers": patch
+---
+
+Support environment for Cloudflare workers

README.md

@@ -85,8 +85,11 @@ to your `.dev.vars` file:
 
 ```sh
 LOGFIRE_TOKEN=your-write-token
+LOGFIRE_ENVIRONMENT=development
 ```
 
+The `LOGFIRE_ENVIRONMENT` variable is optional and can be used to specify the environment for the service.
+
 For production deployment, check the
 [Cloudflare documentation for details on managing and deploying secrets](https://developers.cloudflare.com/workers/configuration/secrets/).
 

package-lock.json

@@ -50,7 +50,7 @@
   },
   "dependencies": {
     "@pydantic/logfire-api": "*",
-    "@pydantic/otel-cf-workers": "^1.0.0-rc.51"
+    "@pydantic/otel-cf-workers": "^1.0.0-rc.53"
   },
   "devDependencies": {
     "@cloudflare/workers-types": "4.20250311.0",

packages/logfire-cf-workers/package.json

@@ -14,7 +14,10 @@ export interface CloudflareConfigOptions {
 
 type Env = Record<string, string | undefined>
 
-type ConfigOptionsBase = Pick<TraceConfig, 'fetch' | 'handlers' | 'instrumentation' | 'propagator' | 'sampling' | 'scope' | 'service'>
+type ConfigOptionsBase = Pick<
+  TraceConfig,
+  'environment' | 'fetch' | 'handlers' | 'instrumentation' | 'propagator' | 'sampling' | 'scope' | 'service'
+>
 
 export interface InProcessConfigOptions extends ConfigOptionsBase {
   baseUrl?: string
@@ -25,11 +28,13 @@ export interface TailConfigOptions extends ConfigOptionsBase {}
 
 function getInProcessConfig(config: InProcessConfigOptions): (env: Env) => TraceConfig {
   return (env: Env): TraceConfig => {
-    const { LOGFIRE_TOKEN: token = '' } = env
+    const { LOGFIRE_ENVIRONMENT: envDeploymentEnvironment, LOGFIRE_TOKEN: token = '' } = env
 
     const baseUrl = resolveBaseUrl(env, config.baseUrl, token)
+    const resolvedEnvironment = config.environment ?? envDeploymentEnvironment
 
     return Object.assign({}, config, {
+      environment: resolvedEnvironment,
       exporter: {
         headers: { Authorization: token },
         url: `${baseUrl}/v1/traces`,