Module DevLog 

DevLog - Tag-filtered development logging

Controlled by LAND_DEV_LOG environment variable. The same tags work in Mountain (Rust), Air (Rust), Wind/Sky (TypeScript).

Usage

LAND_DEV_LOG=lifecycle,grpc ./Air          # only lifecycle + gRPC
LAND_DEV_LOG=all ./Air                     # everything
LAND_DEV_LOG=short ./Air                   # everything, compressed + deduped
LAND_DEV_LOG=indexing,http ./Air           # indexing + HTTP
./Air                                      # nothing (silent daemon)

Short Mode

LAND_DEV_LOG=short enables all tags but compresses output:

• Long app-data paths aliased to $APP
• Consecutive duplicate messages counted ((x14) suffix)
• Rust log targets compressed (D::Binary::Main::Entry → Entry)

Tags (Air daemon tags)

Tag	Scope
vfs	File stat, read, write, readdir, mkdir, delete, copy
ipc	IPC routing: invoke dispatch, channel calls
config	Configuration get/set, env paths, workbench config
lifecycle	Startup, shutdown, phases, window events
storage	Storage get/set/delete, items, optimize
extensions	Extension scanning, activation, management
update	Update service: check, download, apply
grpc	gRPC/Vine: server, client, connections
indexing	File system indexing, symbol extraction, watching
http	HTTP client requests, responses, retries
daemon	Daemon lifecycle, lock management, signals
security	Rate limiting, checksums, secure storage
metrics	Prometheus-style metrics collection
air	Air tracing, telemetry, OTLP emission
resilience	Retry policies, circuit breakers, timeouts
bootstrap	Effect-TS bootstrap stages

Structs

DedupState

Statics

APP_DATA_PREFIX 🔒

DEDUP

ENABLED_TAGS 🔒

OTLP_AVAILABLE 🔒

OTLP_TRACE_ID 🔒

SHORT_MODE 🔒

Functions

AliasPath

Replace the long app-data path with $APP in a string.

AppDataPrefix

Get the app-data path prefix for aliasing (cached).

DetectAppDataPrefix 🔒

EmitOTLPSpan

Emit an OTLP span to the local collector (Jaeger at 127.0.0.1:4318). Fire-and-forget on a background thread. Stops trying after first failure.

EnabledTags 🔒

FlushDedup

Flush the dedup buffer - prints the pending count if > 1.

GetTraceId 🔒

IsEnabled

Check if a tag is enabled.

IsShort

Whether LAND_DEV_LOG=short is active.

NowNano

rand_u64 🔒