migration

Reference migration plans for Phoenix/LiveView to Lightspeed adoption.

Types

DeploymentMode

Deployment topology for a migration plan.

pub type DeploymentMode {
  LegacyPhoenix
  MixedRuntime
  LightspeedPrimary
}

Constructors

```
LegacyPhoenix
```
```
MixedRuntime
```
```
LightspeedPrimary
```

ReferencePlan

End-to-end migration reference plan.

pub type ReferencePlan {
  ReferencePlan(
    name: String,
    size: SizeProfile,
    deployment_mode: DeploymentMode,
    adapters: List(repository.Adapter),
    steps: List(Step),
    rollback_steps: List(Step),
  )
}

Constructors

ReferencePlan(
  name: String,
  size: SizeProfile,
  deployment_mode: DeploymentMode,
  adapters: List(repository.Adapter),
  steps: List(Step),
  rollback_steps: List(Step),
)

SizeProfile

Reference migration size profile.

pub type SizeProfile {
  Small
  Medium
}

Constructors

```
Small
```
```
Medium
```

Step

One migration step in execution order.

pub type Step {
  SnapshotLegacyData
  IntroduceScopedRepository
  EnableDualWriteBridge
  VerifyTenantParity
  ShiftReadPathToLightspeed
  ShiftWritePathToLightspeed
  EnableLightspeedRuntime
  RollbackToLegacy
}

Constructors

```
SnapshotLegacyData
```
```
IntroduceScopedRepository
```
```
EnableDualWriteBridge
```
```
VerifyTenantParity
```
```
ShiftReadPathToLightspeed
```
```
ShiftWritePathToLightspeed
```
```
EnableLightspeedRuntime
```
```
RollbackToLegacy
```

Values

adapters

pub fn adapters(plan: ReferencePlan) -> List(repository.Adapter)

Adapters participating in the plan.

medium_reference_plan

pub fn medium_reference_plan() -> ReferencePlan

Medium-app reference migration.

mode_label

pub fn mode_label(mode: DeploymentMode) -> String

Plan deployment-mode label.

name

pub fn name(plan: ReferencePlan) -> String

Plan name.

rollback_steps

pub fn rollback_steps(plan: ReferencePlan) -> List(Step)

Rollback steps in execution order.

signature

pub fn signature(plan: ReferencePlan) -> String

Stable plan signature for fixtures and docs.

size_label

pub fn size_label(size: SizeProfile) -> String

Plan size label.

small_reference_plan

pub fn small_reference_plan() -> ReferencePlan

Small-app reference migration.

step_label

pub fn step_label(step: Step) -> String

Step label.

steps

pub fn steps(plan: ReferencePlan) -> List(Step)

Plan steps in execution order.

valid

pub fn valid(plan: ReferencePlan) -> Bool

Validate migration plan essentials.