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internal/service/placeholder.go

Source​

Overview​

What:

Minimal placeholder package and type for future internal service orchestration.

Today this file intentionally does almost nothing. It exists so the repository can safely depend on internal/service without committing to an API surface prematurely.

Why:

The gateway's runtime wiring currently lives mostly in pkg/gateway/runtime and pkg/gateway/server.

As the project grows, it is common to introduce an internal "service layer" that coordinates:

  • startup/shutdown of multiple subsystems
  • lifecycle hooks and dependency injection
  • shared cross-cutting concerns (backoff policies, schedulers, etc)

This placeholder provides a stable import path for that future work without blocking current development.

How:

  • Placeholder is an empty struct (zero size).
  • NewPlaceholder() returns a pointer to a new instance.

Notes:

When real services are introduced, this file is expected to be replaced or expanded. Do not build new production behavior on top of this placeholder type.

Contents​

Types​

type block 1​

internal/service/placeholder.go#L4
type Placeholder struct{}

Placeholder​

What: Empty struct used as scaffolding for future internal services.

Why: Keeps the internal/service package non-empty and provides a hook for future orchestration services.

How: Declared as struct{} with no fields.

Notes: This type intentionally carries no behavior.

Functions and Methods​

NewPlaceholder​

What: Constructs a no-op placeholder service instance.

Why: Mirrors the "constructor returns pointer" pattern used throughout the repo, making it easy to evolve later.

How: Returns &Placeholder{}.

internal/service/placeholder.go#L7
func NewPlaceholder() *Placeholder {
	return &Placeholder{}
}

Walkthrough​

The list below documents the statements inside the function body, including nested blocks and inline closures.

  • L8: return &Placeholder{}
    • What: Returns from the current function.
    • Why: Ends the current execution path and hands control back to the caller.
    • How: Executes a return statement (possibly returning values).

Architecture​

Neighboring source​