Package io.quarkus.deployment

Interface ConfigBuildTimeConfig

@ConfigMapping(prefix="quarkus.config") @ConfigRoot(phase=BUILD_TIME) @ConfigDocPrefix("quarkus.config") public interface ConfigBuildTimeConfig
Configuration

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    fixedAtBuildTime()
    If set to true, all configuration is frozen at build time.
    boolean
    systemOnly()
    Set this to true to read configuration from system properties and environment variables only.

  • Method Details

    • systemOnly

      @WithName("sources.system-only") @WithDefault("false") boolean systemOnly()

      Set this to true to read configuration from system properties and environment variables only. This only applies to runtime.

    • fixedAtBuildTime

      @WithName("fixed-at-build-time") @WithDefault("false") boolean fixedAtBuildTime()
      If set to true, all configuration is frozen at build time. All values from application.properties and similar file-based sources are baked into the application artifact at the highest priority. At runtime, no external configuration sources are consulted: no application.properties, no .env files, no system properties, and no environment variables can affect configuration values.

      The only exceptions are a small set of JVM environment properties (java.io.tmpdir, user.home, user.dir) which are resolved at runtime to support @WithDefault expressions whose values are inherently machine-dependent.

      This is useful for CLI applications and sealed/immutable deployments where the binary's behavior must be fully determined at build time.

      Computed defaults (@WithDefault) and programmatic values set by recorders still work normally. When enabled, this supersedes quarkus.config.sources.system-only.