Feat: @medusajs/workflows (#4553)

feat: medusa workflows
This commit is contained in:
Carlos R. L. Rodrigues
2023-07-25 10:13:14 -03:00
committed by GitHub
parent ae33f4825f
commit f12299deb1
52 changed files with 1358 additions and 331 deletions

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import { OrchestratorBuilder } from "../../transaction/orchestrator-builder"
describe("OrchestratorBuilder", () => {
let builder: OrchestratorBuilder
beforeEach(() => {
builder = new OrchestratorBuilder()
})
it("should load a TransactionStepsDefinition", () => {
builder.load({ action: "foo" })
expect(builder.build()).toEqual({
action: "foo",
})
})
it("should add a new action after the last action set", () => {
builder.addAction("foo")
expect(builder.build()).toEqual({
action: "foo",
})
builder.addAction("bar")
expect(builder.build()).toEqual({
action: "foo",
next: {
action: "bar",
},
})
})
it("should replace an action by another keeping its next steps", () => {
builder.addAction("foo").addAction("axe").replaceAction("foo", "bar")
expect(builder.build()).toEqual({
action: "bar",
next: {
action: "axe",
},
})
})
it("should insert a new action before an existing action", () => {
builder.addAction("foo").addAction("bar").insertActionBefore("bar", "axe")
expect(builder.build()).toEqual({
action: "foo",
next: {
action: "axe",
next: {
action: "bar",
},
},
})
})
it("should insert a new action after an existing action", () => {
builder.addAction("foo").addAction("axe").insertActionAfter("foo", "bar")
expect(builder.build()).toEqual({
action: "foo",
next: {
action: "bar",
next: {
action: "axe",
},
},
})
})
it("should move an existing action and its next steps to another place. the destination will become next steps of the final branch", () => {
builder
.addAction("foo")
.addAction("bar")
.addAction("axe")
.addAction("zzz")
.moveAction("axe", "foo")
expect(builder.build()).toEqual({
action: "axe",
next: {
action: "zzz",
next: {
action: "foo",
next: {
action: "bar",
},
},
},
})
})
it("should merge two action to run in parallel", () => {
builder
.addAction("foo")
.addAction("bar")
.addAction("axe")
.mergeActions("foo", "axe")
expect(builder.build()).toEqual({
next: [
{
action: "foo",
next: { action: "bar" },
},
{ action: "axe" },
],
})
})
it("should merge multiple actions to run in parallel", () => {
builder
.addAction("foo")
.addAction("bar")
.addAction("axe")
.addAction("step")
.mergeActions("bar", "axe", "step")
expect(builder.build()).toEqual({
action: "foo",
next: [
{
action: "bar",
},
{
action: "axe",
},
{
action: "step",
},
],
})
})
it("should delete an action", () => {
builder.addAction("foo").deleteAction("foo")
expect(builder.build()).toEqual({})
})
it("should delete an action and keep all the next steps of that branch", () => {
builder
.addAction("foo")
.addAction("bar")
.addAction("axe")
.deleteAction("bar")
expect(builder.build()).toEqual({
action: "foo",
next: {
action: "axe",
},
})
})
it("should delete an action and remove all the next steps of that branch", () => {
builder
.addAction("foo")
.addAction("bar")
.addAction("axe")
.addAction("step")
.pruneAction("bar")
expect(builder.build()).toEqual({
action: "foo",
})
})
it("should append a new action to the end of a given action's branch", () => {
builder
.load({
action: "foo",
next: [
{
action: "bar",
next: {
action: "zzz",
},
},
{
action: "axe",
},
],
})
.appendAction("step", "bar", { saveResponse: true })
expect(builder.build()).toEqual({
action: "foo",
next: [
{
action: "bar",
next: {
action: "zzz",
next: {
action: "step",
saveResponse: true,
},
},
},
{
action: "axe",
},
],
})
})
describe("Composing Complex Transactions", () => {
const loadedFlow = {
next: {
action: "createProduct",
saveResponse: true,
next: {
action: "attachToSalesChannel",
saveResponse: true,
next: {
action: "createPrices",
saveResponse: true,
next: {
action: "createInventoryItems",
saveResponse: true,
next: {
action: "attachInventoryItems",
noCompensation: true,
},
},
},
},
},
}
it("should load a transaction and add two steps", () => {
const builder = new OrchestratorBuilder(loadedFlow)
builder
.addAction("step_1", { saveResponse: true })
.addAction("step_2", { saveResponse: true })
expect(builder.build()).toEqual({
action: "createProduct",
saveResponse: true,
next: {
action: "attachToSalesChannel",
saveResponse: true,
next: {
action: "createPrices",
saveResponse: true,
next: {
action: "createInventoryItems",
saveResponse: true,
next: {
action: "attachInventoryItems",
noCompensation: true,
next: {
action: "step_1",
saveResponse: true,
next: {
action: "step_2",
saveResponse: true,
},
},
},
},
},
},
})
})
it("should load a transaction, add 2 steps and merge step_1 to run in parallel with createProduct", () => {
const builder = new OrchestratorBuilder(loadedFlow)
builder
.addAction("step_1", { saveResponse: true })
.addAction("step_2", { saveResponse: true })
.mergeActions("createProduct", "step_1")
expect(builder.build()).toEqual({
next: [
{
action: "createProduct",
saveResponse: true,
next: {
action: "attachToSalesChannel",
saveResponse: true,
next: {
action: "createPrices",
saveResponse: true,
next: {
action: "createInventoryItems",
saveResponse: true,
next: {
action: "attachInventoryItems",
noCompensation: true,
},
},
},
},
},
{
action: "step_1",
saveResponse: true,
next: {
action: "step_2",
saveResponse: true,
},
},
],
})
})
it("should load a transaction, add 2 steps and move 'step_1' and all its next steps to run before 'createPrices'", () => {
const builder = new OrchestratorBuilder(loadedFlow)
builder
.addAction("step_1", { saveResponse: true })
.addAction("step_2", { saveResponse: true })
.moveAction("step_1", "createPrices")
expect(builder.build()).toEqual({
action: "createProduct",
saveResponse: true,
next: {
action: "attachToSalesChannel",
saveResponse: true,
next: {
action: "step_1",
saveResponse: true,
next: {
action: "step_2",
saveResponse: true,
next: {
action: "createPrices",
saveResponse: true,
next: {
action: "createInventoryItems",
saveResponse: true,
next: {
action: "attachInventoryItems",
noCompensation: true,
},
},
},
},
},
},
})
})
it("should load a transaction, add 2 steps and move 'step_1' to run before 'createPrices' and merge next steps", () => {
const builder = new OrchestratorBuilder(loadedFlow)
builder
.addAction("step_1", { saveResponse: true })
.addAction("step_2", { saveResponse: true })
.moveAndMergeNextAction("step_1", "createPrices")
expect(builder.build()).toEqual({
action: "createProduct",
saveResponse: true,
next: {
action: "attachToSalesChannel",
saveResponse: true,
next: {
action: "step_1",
saveResponse: true,
next: [
{
action: "step_2",
saveResponse: true,
},
{
action: "createPrices",
saveResponse: true,
next: {
action: "createInventoryItems",
saveResponse: true,
next: {
action: "attachInventoryItems",
noCompensation: true,
},
},
},
],
},
},
})
})
it("Fully compose a complex transaction", () => {
const builder = new OrchestratorBuilder()
builder
.addAction("step_1", { saveResponse: true })
.addAction("step_2", { saveResponse: true })
.addAction("step_3", { saveResponse: true })
builder.insertActionBefore("step_3", "step_2.5", {
saveResponse: false,
noCompensation: true,
})
builder.insertActionAfter("step_1", "step_1.1", { saveResponse: true })
builder.insertActionAfter("step_3", "step_4", { async: false })
builder
.mergeActions("step_2", "step_2.5", "step_3")
.addAction("step_5", { noCompensation: true })
builder.deleteAction("step_3")
expect(builder.build()).toEqual({
action: "step_1",
saveResponse: true,
next: {
action: "step_1.1",
saveResponse: true,
next: [
{
action: "step_2",
saveResponse: true,
},
{
action: "step_2.5",
saveResponse: false,
noCompensation: true,
},
{
action: "step_4",
async: false,
next: {
action: "step_5",
noCompensation: true,
},
},
],
},
})
})
})
})

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import {
TransactionHandlerType,
TransactionOrchestrator,
TransactionPayload,
TransactionState,
TransactionStepsDefinition,
} from "../../transaction"
describe("Transaction Orchestrator", () => {
afterEach(() => {
jest.clearAllMocks()
})
it("Should follow the flow by calling steps in order with the correct payload", async () => {
const mocks = {
one: jest.fn().mockImplementation((payload) => {
return payload
}),
two: jest.fn().mockImplementation((payload) => {
return payload
}),
}
async function handler(
actionId: string,
functionHandlerType: TransactionHandlerType,
payload: TransactionPayload
) {
const command = {
firstMethod: {
[TransactionHandlerType.INVOKE]: () => {
mocks.one(payload)
},
},
secondMethod: {
[TransactionHandlerType.INVOKE]: () => {
mocks.two(payload)
},
},
}
return command[actionId][functionHandlerType](payload)
}
const flow: TransactionStepsDefinition = {
next: {
action: "firstMethod",
next: {
action: "secondMethod",
},
},
}
const strategy = new TransactionOrchestrator("transaction-name", flow)
const transaction = await strategy.beginTransaction(
"transaction_id_123",
handler,
{
prop: 123,
}
)
await strategy.resume(transaction)
expect(transaction.transactionId).toBe("transaction_id_123")
expect(transaction.getState()).toBe(TransactionState.DONE)
expect(mocks.one).toBeCalledWith(
expect.objectContaining({
metadata: {
model_id: "transaction-name",
reply_to_topic: "trans:transaction-name",
idempotency_key: "transaction_id_123:firstMethod:invoke",
action: "firstMethod",
action_type: "invoke",
attempt: 1,
timestamp: expect.any(Number),
},
data: { prop: 123 },
})
)
expect(mocks.two).toBeCalledWith(
expect.objectContaining({
metadata: {
model_id: "transaction-name",
reply_to_topic: "trans:transaction-name",
idempotency_key: "transaction_id_123:secondMethod:invoke",
action: "secondMethod",
action_type: "invoke",
attempt: 1,
timestamp: expect.any(Number),
},
data: { prop: 123 },
})
)
})
it("Should resume steps in parallel if 'next' is an array", async () => {
const actionOrder: string[] = []
async function handler(
actionId: string,
functionHandlerType: TransactionHandlerType,
payload: TransactionPayload
) {
return actionOrder.push(actionId)
}
const flow: TransactionStepsDefinition = {
next: [
{
action: "one",
},
{
action: "two",
next: {
action: "four",
next: {
action: "six",
},
},
},
{
action: "three",
next: {
action: "five",
},
},
],
}
const strategy = new TransactionOrchestrator("transaction-name", flow)
const transaction = await strategy.beginTransaction(
"transaction_id_123",
handler
)
await strategy.resume(transaction)
expect(actionOrder).toEqual(["one", "two", "three", "four", "five", "six"])
})
it("Should not execute next steps when a step fails", async () => {
const actionOrder: string[] = []
async function handler(
actionId: string,
functionHandlerType: TransactionHandlerType,
payload: TransactionPayload
) {
if (functionHandlerType === TransactionHandlerType.INVOKE) {
actionOrder.push(actionId)
}
if (TransactionHandlerType.INVOKE && actionId === "three") {
throw new Error()
}
}
const flow: TransactionStepsDefinition = {
next: [
{
action: "one",
},
{
action: "two",
next: {
action: "four",
next: {
action: "six",
},
},
},
{
action: "three",
maxRetries: 0,
next: {
action: "five",
},
},
],
}
const strategy = new TransactionOrchestrator("transaction-name", flow)
const transaction = await strategy.beginTransaction(
"transaction_id_123",
handler
)
await strategy.resume(transaction)
expect(actionOrder).toEqual(["one", "two", "three"])
})
it("Should store invoke's step response by default or if flag 'saveResponse' is set to true and ignore it if set to false", async () => {
const mocks = {
one: jest.fn().mockImplementation((data) => {
return { abc: 1234 }
}),
two: jest.fn().mockImplementation((data) => {
return { def: "567" }
}),
three: jest.fn().mockImplementation((data, context) => {
return { end: true, onePropAbc: context.invoke.firstMethod.abc }
}),
four: jest.fn().mockImplementation((data) => {
return null
}),
}
async function handler(
actionId: string,
functionHandlerType: TransactionHandlerType,
payload: TransactionPayload
) {
const command = {
firstMethod: {
[TransactionHandlerType.INVOKE]: (data) => {
return mocks.one(data)
},
},
secondMethod: {
[TransactionHandlerType.INVOKE]: (data) => {
return mocks.two(data)
},
},
thirdMethod: {
[TransactionHandlerType.INVOKE]: (data, context) => {
return mocks.three(data, context)
},
},
fourthMethod: {
[TransactionHandlerType.INVOKE]: (data) => {
return mocks.four(data)
},
},
}
return command[actionId][functionHandlerType](
payload.data,
payload.context
)
}
const flow: TransactionStepsDefinition = {
next: {
action: "firstMethod",
next: {
action: "secondMethod",
next: {
action: "thirdMethod",
next: {
action: "fourthMethod",
saveResponse: false,
},
},
},
},
}
const strategy = new TransactionOrchestrator("transaction-name", flow)
const transaction = await strategy.beginTransaction(
"transaction_id_123",
handler,
{ prop: 123 }
)
await strategy.resume(transaction)
expect(mocks.one).toBeCalledWith({ prop: 123 })
expect(mocks.two).toBeCalledWith({ prop: 123 })
expect(mocks.three).toBeCalledWith(
{ prop: 123 },
{
payload: {
prop: 123,
},
invoke: {
firstMethod: { abc: 1234 },
secondMethod: { def: "567" },
thirdMethod: { end: true, onePropAbc: 1234 },
},
compensate: {},
}
)
})
it("Should store compensate's step responses if flag 'saveResponse' is set to true", async () => {
const mocks = {
one: jest.fn().mockImplementation(() => {
return 1
}),
two: jest.fn().mockImplementation(() => {
return 2
}),
compensateOne: jest.fn().mockImplementation((compensateContext) => {
return "compensate 1 - 2 = " + compensateContext.secondMethod.two
}),
compensateTwo: jest.fn().mockImplementation((compensateContext) => {
return { two: "isCompensated" }
}),
}
async function handler(
actionId: string,
functionHandlerType: TransactionHandlerType,
payload: TransactionPayload
) {
const command = {
firstMethod: {
[TransactionHandlerType.INVOKE]: () => {
return mocks.one()
},
[TransactionHandlerType.COMPENSATE]: ({ compensate }) => {
return mocks.compensateOne({ ...compensate })
},
},
secondMethod: {
[TransactionHandlerType.INVOKE]: () => {
return mocks.two()
},
[TransactionHandlerType.COMPENSATE]: ({ compensate }) => {
return mocks.compensateTwo({ ...compensate })
},
},
thirdMethod: {
[TransactionHandlerType.INVOKE]: () => {
throw new Error("failed")
},
},
}
return command[actionId][functionHandlerType](payload.context)
}
const flow: TransactionStepsDefinition = {
next: {
action: "firstMethod",
saveResponse: true,
next: {
action: "secondMethod",
saveResponse: true,
next: {
action: "thirdMethod",
noCompensation: true,
},
},
},
}
const strategy = new TransactionOrchestrator("transaction-name", flow)
const transaction = await strategy.beginTransaction(
"transaction_id_123",
handler
)
await strategy.resume(transaction)
const resposes = transaction.getContext()
expect(mocks.compensateTwo).toBeCalledWith({})
expect(mocks.compensateOne).toBeCalledWith({
secondMethod: {
two: "isCompensated",
},
})
expect(resposes.compensate.firstMethod).toEqual(
"compensate 1 - 2 = isCompensated"
)
})
it("Should continue the exection of next steps without waiting for the execution of all its parents when flag 'noWait' is set to true", async () => {
const actionOrder: string[] = []
async function handler(
actionId: string,
functionHandlerType: TransactionHandlerType,
payload: TransactionPayload
) {
if (functionHandlerType === TransactionHandlerType.INVOKE) {
actionOrder.push(actionId)
}
if (
functionHandlerType === TransactionHandlerType.INVOKE &&
actionId === "three"
) {
throw new Error()
}
}
const flow: TransactionStepsDefinition = {
next: [
{
action: "one",
next: {
action: "five",
},
},
{
action: "two",
noWait: true,
next: {
action: "four",
},
},
{
action: "three",
maxRetries: 0,
},
],
}
const strategy = new TransactionOrchestrator("transaction-name", flow)
const transaction = await strategy.beginTransaction(
"transaction_id_123",
handler
)
strategy.resume(transaction)
await new Promise((ok) => {
strategy.on("finish", ok)
})
expect(actionOrder).toEqual(["one", "two", "three", "four"])
})
it("Should retry steps X times when a step fails and compensate steps afterward", async () => {
const mocks = {
one: jest.fn().mockImplementation((payload) => {
return payload
}),
compensateOne: jest.fn().mockImplementation((payload) => {
return payload
}),
two: jest.fn().mockImplementation((payload) => {
throw new Error()
}),
compensateTwo: jest.fn().mockImplementation((payload) => {
return payload
}),
}
async function handler(
actionId: string,
functionHandlerType: TransactionHandlerType,
payload: TransactionPayload
) {
const command = {
firstMethod: {
[TransactionHandlerType.INVOKE]: () => {
mocks.one(payload)
},
[TransactionHandlerType.COMPENSATE]: () => {
mocks.compensateOne(payload)
},
},
secondMethod: {
[TransactionHandlerType.INVOKE]: () => {
mocks.two(payload)
},
[TransactionHandlerType.COMPENSATE]: () => {
mocks.compensateTwo(payload)
},
},
}
return command[actionId][functionHandlerType](payload)
}
const flow: TransactionStepsDefinition = {
next: {
action: "firstMethod",
maxRetries: 3,
next: {
action: "secondMethod",
maxRetries: 3,
},
},
}
const strategy = new TransactionOrchestrator("transaction-name", flow)
const transaction = await strategy.beginTransaction(
"transaction_id_123",
handler
)
await strategy.resume(transaction)
expect(transaction.transactionId).toBe("transaction_id_123")
expect(mocks.one).toBeCalledTimes(1)
expect(mocks.two).toBeCalledTimes(4)
expect(transaction.getState()).toBe(TransactionState.REVERTED)
expect(mocks.compensateOne).toBeCalledTimes(1)
expect(mocks.two).nthCalledWith(
1,
expect.objectContaining({
metadata: expect.objectContaining({
attempt: 1,
}),
})
)
expect(mocks.two).nthCalledWith(
4,
expect.objectContaining({
metadata: expect.objectContaining({
attempt: 4,
}),
})
)
})
it("Should fail a transaction if any step fails after retrying X time to compensate it", async () => {
const mocks = {
one: jest.fn().mockImplementation((payload) => {
throw new Error()
}),
}
async function handler(
actionId: string,
functionHandlerType: TransactionHandlerType,
payload: TransactionPayload
) {
const command = {
firstMethod: {
[TransactionHandlerType.INVOKE]: () => {
mocks.one(payload)
},
},
}
return command[actionId][functionHandlerType](payload)
}
const flow: TransactionStepsDefinition = {
next: {
action: "firstMethod",
maxRetries: 1,
},
}
const strategy = new TransactionOrchestrator("transaction-name", flow)
const transaction = await strategy.beginTransaction(
"transaction_id_123",
handler
)
await strategy.resume(transaction)
expect(mocks.one).toBeCalledTimes(2)
expect(transaction.getState()).toBe(TransactionState.FAILED)
})
it("Should complete a transaction if a failing step has the flag 'continueOnPermanentFailure' set to true", async () => {
const mocks = {
one: jest.fn().mockImplementation((payload) => {
return
}),
two: jest.fn().mockImplementation((payload) => {
throw new Error()
}),
}
async function handler(
actionId: string,
functionHandlerType: TransactionHandlerType,
payload: TransactionPayload
) {
const command = {
firstMethod: {
[TransactionHandlerType.INVOKE]: () => {
mocks.one(payload)
},
},
secondMethod: {
[TransactionHandlerType.INVOKE]: () => {
mocks.two(payload)
},
},
}
return command[actionId][functionHandlerType](payload)
}
const flow: TransactionStepsDefinition = {
next: {
action: "firstMethod",
next: {
action: "secondMethod",
maxRetries: 1,
continueOnPermanentFailure: true,
},
},
}
const strategy = new TransactionOrchestrator("transaction-name", flow)
const transaction = await strategy.beginTransaction(
"transaction_id_123",
handler
)
await strategy.resume(transaction)
expect(transaction.transactionId).toBe("transaction_id_123")
expect(mocks.one).toBeCalledTimes(1)
expect(mocks.two).toBeCalledTimes(2)
expect(transaction.getState()).toBe(TransactionState.DONE)
expect(transaction.isPartiallyCompleted).toBe(true)
})
it("Should hold the status INVOKING while the transaction hasn't finished", async () => {
const mocks = {
one: jest.fn().mockImplementation((payload) => {
return
}),
two: jest.fn().mockImplementation((payload) => {
return
}),
}
async function handler(
actionId: string,
functionHandlerType: TransactionHandlerType,
payload: TransactionPayload
) {
const command = {
firstMethod: {
[TransactionHandlerType.INVOKE]: () => {
mocks.one(payload)
},
},
secondMethod: {
[TransactionHandlerType.INVOKE]: () => {
mocks.two(payload)
},
},
}
return command[actionId][functionHandlerType](payload)
}
const flow: TransactionStepsDefinition = {
next: {
action: "firstMethod",
async: true,
next: {
action: "secondMethod",
},
},
}
const strategy = new TransactionOrchestrator("transaction-name", flow)
const transaction = await strategy.beginTransaction(
"transaction_id_123",
handler,
{
myPayloadProp: "test",
}
)
await strategy.resume(transaction)
expect(mocks.one).toBeCalledTimes(1)
expect(mocks.two).toBeCalledTimes(0)
expect(transaction.getState()).toBe(TransactionState.INVOKING)
const mocktransactionId = TransactionOrchestrator.getKeyName(
transaction.transactionId,
"firstMethod",
TransactionHandlerType.INVOKE
)
await strategy.registerStepSuccess(
mocktransactionId,
undefined,
transaction
)
expect(transaction.getState()).toBe(TransactionState.DONE)
})
it("Should hold the status COMPENSATING while the transaction hasn't finished compensating", async () => {
const mocks = {
one: jest.fn().mockImplementation((payload) => {
return
}),
compensateOne: jest.fn().mockImplementation((payload) => {
return
}),
two: jest.fn().mockImplementation((payload) => {
return
}),
}
async function handler(
actionId: string,
functionHandlerType: TransactionHandlerType,
payload: TransactionPayload
) {
const command = {
firstMethod: {
[TransactionHandlerType.INVOKE]: () => {
mocks.one(payload)
},
[TransactionHandlerType.COMPENSATE]: () => {
mocks.compensateOne(payload)
},
},
secondMethod: {
[TransactionHandlerType.INVOKE]: () => {
mocks.two(payload)
},
},
}
return command[actionId][functionHandlerType](payload)
}
const flow: TransactionStepsDefinition = {
next: {
action: "firstMethod",
async: true,
next: {
action: "secondMethod",
},
},
}
const strategy = new TransactionOrchestrator("transaction-name", flow)
const transaction = await strategy.beginTransaction(
"transaction_id_123",
handler
)
const mocktransactionId = TransactionOrchestrator.getKeyName(
transaction.transactionId,
"firstMethod",
TransactionHandlerType.INVOKE
)
const registerBeforeAllowed = await strategy
.registerStepFailure(mocktransactionId, null, handler)
.catch((e) => e.message)
await strategy.resume(transaction)
expect(mocks.one).toBeCalledTimes(1)
expect(mocks.compensateOne).toBeCalledTimes(0)
expect(mocks.two).toBeCalledTimes(0)
expect(registerBeforeAllowed).toEqual(
"Cannot set step failure when status is idle"
)
expect(transaction.getState()).toBe(TransactionState.INVOKING)
const resumedTransaction = await strategy.registerStepFailure(
mocktransactionId,
null,
handler
)
expect(resumedTransaction.getState()).toBe(TransactionState.COMPENSATING)
expect(mocks.compensateOne).toBeCalledTimes(1)
const mocktransactionIdCompensate = TransactionOrchestrator.getKeyName(
transaction.transactionId,
"firstMethod",
TransactionHandlerType.COMPENSATE
)
await strategy.registerStepSuccess(
mocktransactionIdCompensate,
undefined,
resumedTransaction
)
expect(resumedTransaction.getState()).toBe(TransactionState.REVERTED)
})
it("Should revert a transaction when .cancelTransaction() is called", async () => {
const mocks = {
one: jest.fn().mockImplementation((payload) => {
return payload
}),
oneCompensate: jest.fn().mockImplementation((payload) => {
return payload
}),
two: jest.fn().mockImplementation((payload) => {
return payload
}),
twoCompensate: jest.fn().mockImplementation((payload) => {
return payload
}),
}
async function handler(
actionId: string,
functionHandlerType: TransactionHandlerType,
payload: TransactionPayload
) {
const command = {
firstMethod: {
[TransactionHandlerType.INVOKE]: () => {
mocks.one(payload)
},
[TransactionHandlerType.COMPENSATE]: () => {
mocks.oneCompensate(payload)
},
},
secondMethod: {
[TransactionHandlerType.INVOKE]: () => {
mocks.two(payload)
},
[TransactionHandlerType.COMPENSATE]: () => {
mocks.twoCompensate(payload)
},
},
}
return command[actionId][functionHandlerType](payload)
}
const flow: TransactionStepsDefinition = {
next: {
action: "firstMethod",
next: {
action: "secondMethod",
},
},
}
const strategy = new TransactionOrchestrator("transaction-name", flow)
const transaction = await strategy.beginTransaction(
"transaction_id_123",
handler
)
await strategy.resume(transaction)
expect(transaction.getState()).toBe(TransactionState.DONE)
expect(mocks.one).toBeCalledTimes(1)
expect(mocks.two).toBeCalledTimes(1)
await strategy.cancelTransaction(transaction)
expect(transaction.getState()).toBe(TransactionState.REVERTED)
expect(mocks.one).toBeCalledTimes(1)
expect(mocks.two).toBeCalledTimes(1)
expect(mocks.oneCompensate).toBeCalledTimes(1)
expect(mocks.twoCompensate).toBeCalledTimes(1)
})
})

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import { GlobalWorkflow } from "../../workflow/global-workflow"
import { TransactionState } from "../../transaction/types"
import { WorkflowManager } from "../../workflow/workflow-manager"
describe("WorkflowManager", () => {
const container: any = {}
let handlers
let flow: GlobalWorkflow
let asyncStepIdempotencyKey: string
beforeEach(() => {
jest.resetAllMocks()
WorkflowManager.unregisterAll()
handlers = new Map()
handlers.set("foo", {
invoke: jest.fn().mockResolvedValue({ done: true }),
compensate: jest.fn(() => {}),
})
handlers.set("bar", {
invoke: jest.fn().mockResolvedValue({ done: true }),
compensate: jest.fn().mockResolvedValue({}),
})
handlers.set("broken", {
invoke: jest.fn(() => {
throw new Error("Step Failed")
}),
compensate: jest.fn().mockResolvedValue({ bar: 123, reverted: true }),
})
handlers.set("callExternal", {
invoke: jest.fn(({ metadata }) => {
asyncStepIdempotencyKey = metadata.idempotency_key
}),
})
WorkflowManager.register(
"create-product",
{
action: "foo",
next: {
action: "bar",
},
},
handlers
)
WorkflowManager.register(
"broken-delivery",
{
action: "foo",
next: {
action: "broken",
},
},
handlers
)
WorkflowManager.register(
"deliver-product",
{
action: "foo",
next: {
action: "callExternal",
async: true,
noCompensation: true,
next: {
action: "bar",
},
},
},
handlers
)
flow = new GlobalWorkflow(container)
})
it("should return all registered workflows", () => {
const wf = Object.keys(Object.fromEntries(WorkflowManager.getWorkflows()))
expect(wf).toEqual(["create-product", "broken-delivery", "deliver-product"])
})
it("should begin a transaction and returns its final state", async () => {
const transaction = await flow.run("create-product", "t-id", {
input: 123,
})
expect(handlers.get("foo").invoke).toHaveBeenCalledTimes(1)
expect(handlers.get("bar").invoke).toHaveBeenCalledTimes(1)
expect(handlers.get("foo").compensate).toHaveBeenCalledTimes(0)
expect(handlers.get("foo").compensate).toHaveBeenCalledTimes(0)
expect(transaction.getState()).toBe(TransactionState.DONE)
})
it("should begin a transaction and revert it when fail", async () => {
const transaction = await flow.run("broken-delivery", "t-id")
expect(handlers.get("foo").invoke).toHaveBeenCalledTimes(1)
expect(handlers.get("broken").invoke).toHaveBeenCalledTimes(1)
expect(handlers.get("foo").compensate).toHaveBeenCalledTimes(1)
expect(handlers.get("broken").compensate).toHaveBeenCalledTimes(1)
expect(transaction.getState()).toBe(TransactionState.REVERTED)
})
it("should continue an asyncronous transaction after reporting a successful step", async () => {
const transaction = await flow.run("deliver-product", "t-id")
expect(handlers.get("foo").invoke).toHaveBeenCalledTimes(1)
expect(handlers.get("callExternal").invoke).toHaveBeenCalledTimes(1)
expect(handlers.get("bar").invoke).toHaveBeenCalledTimes(0)
expect(transaction.getState()).toBe(TransactionState.INVOKING)
const continuation = await flow.registerStepSuccess(
"deliver-product",
asyncStepIdempotencyKey,
{ ok: true }
)
expect(handlers.get("bar").invoke).toHaveBeenCalledTimes(1)
expect(continuation.getState()).toBe(TransactionState.DONE)
})
it("should revert an asyncronous transaction after reporting a failure step", async () => {
const transaction = await flow.run("deliver-product", "t-id")
expect(handlers.get("foo").invoke).toHaveBeenCalledTimes(1)
expect(handlers.get("callExternal").invoke).toHaveBeenCalledTimes(1)
expect(handlers.get("bar").invoke).toHaveBeenCalledTimes(0)
expect(transaction.getState()).toBe(TransactionState.INVOKING)
const continuation = await flow.registerStepFailure(
"deliver-product",
asyncStepIdempotencyKey,
{ ok: true }
)
expect(handlers.get("foo").compensate).toHaveBeenCalledTimes(1)
expect(handlers.get("bar").invoke).toHaveBeenCalledTimes(0)
expect(handlers.get("bar").compensate).toHaveBeenCalledTimes(0)
// Failed because the async is flagged as noCompensation
expect(continuation.getState()).toBe(TransactionState.FAILED)
})
it("should update an existing global flow with a new step and a new handler", async () => {
const definition =
WorkflowManager.getTransactionDefinition("create-product")
definition.insertActionBefore("bar", "xor", { maxRetries: 3 })
const additionalHandlers = new Map()
additionalHandlers.set("xor", {
invoke: jest.fn().mockResolvedValue({ done: true }),
compensate: jest.fn().mockResolvedValue({}),
})
WorkflowManager.update("create-product", definition, additionalHandlers)
const transaction = await flow.run("create-product", "t-id")
expect(handlers.get("foo").invoke).toHaveBeenCalledTimes(1)
expect(handlers.get("bar").invoke).toHaveBeenCalledTimes(1)
expect(additionalHandlers.get("xor").invoke).toHaveBeenCalledTimes(1)
expect(transaction.getState()).toBe(TransactionState.DONE)
})
})

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import { LocalWorkflow } from "../../workflow/local-workflow"
import { TransactionState } from "../../transaction/types"
import { WorkflowManager } from "../../workflow/workflow-manager"
describe("WorkflowManager", () => {
const container: any = {}
let handlers
let asyncStepIdempotencyKey: string
beforeEach(() => {
jest.resetAllMocks()
WorkflowManager.unregisterAll()
handlers = new Map()
handlers.set("foo", {
invoke: jest.fn().mockResolvedValue({ done: true }),
compensate: jest.fn(() => {}),
})
handlers.set("bar", {
invoke: jest.fn().mockResolvedValue({ done: true }),
compensate: jest.fn().mockResolvedValue({}),
})
handlers.set("broken", {
invoke: jest.fn(() => {
throw new Error("Step Failed")
}),
compensate: jest.fn().mockResolvedValue({ bar: 123, reverted: true }),
})
handlers.set("callExternal", {
invoke: jest.fn(({ metadata }) => {
asyncStepIdempotencyKey = metadata.idempotency_key
}),
})
WorkflowManager.register(
"create-product",
{
action: "foo",
next: {
action: "bar",
},
},
handlers
)
WorkflowManager.register(
"broken-delivery",
{
action: "foo",
next: {
action: "broken",
},
},
handlers
)
WorkflowManager.register(
"deliver-product",
{
action: "foo",
next: {
action: "callExternal",
async: true,
noCompensation: true,
next: {
action: "bar",
},
},
},
handlers
)
})
it("should return all registered workflows", () => {
const wf = Object.keys(Object.fromEntries(WorkflowManager.getWorkflows()))
expect(wf).toEqual(["create-product", "broken-delivery", "deliver-product"])
})
it("should begin a transaction and returns its final state", async () => {
const flow = new LocalWorkflow("create-product", container)
const transaction = await flow.run("t-id", {
input: 123,
})
expect(handlers.get("foo").invoke).toHaveBeenCalledTimes(1)
expect(handlers.get("bar").invoke).toHaveBeenCalledTimes(1)
expect(handlers.get("foo").compensate).toHaveBeenCalledTimes(0)
expect(handlers.get("foo").compensate).toHaveBeenCalledTimes(0)
expect(transaction.getState()).toBe(TransactionState.DONE)
})
it("should begin a transaction and revert it when fail", async () => {
const flow = new LocalWorkflow("broken-delivery", container)
const transaction = await flow.run("t-id")
expect(handlers.get("foo").invoke).toHaveBeenCalledTimes(1)
expect(handlers.get("broken").invoke).toHaveBeenCalledTimes(1)
expect(handlers.get("foo").compensate).toHaveBeenCalledTimes(1)
expect(handlers.get("broken").compensate).toHaveBeenCalledTimes(1)
expect(transaction.getState()).toBe(TransactionState.REVERTED)
})
it("should continue an asyncronous transaction after reporting a successful step", async () => {
const flow = new LocalWorkflow("deliver-product", container)
const transaction = await flow.run("t-id")
expect(handlers.get("foo").invoke).toHaveBeenCalledTimes(1)
expect(handlers.get("callExternal").invoke).toHaveBeenCalledTimes(1)
expect(handlers.get("bar").invoke).toHaveBeenCalledTimes(0)
expect(transaction.getState()).toBe(TransactionState.INVOKING)
const continuation = await flow.registerStepSuccess(
asyncStepIdempotencyKey,
{ ok: true }
)
expect(handlers.get("bar").invoke).toHaveBeenCalledTimes(1)
expect(continuation.getState()).toBe(TransactionState.DONE)
})
it("should revert an asyncronous transaction after reporting a failure step", async () => {
const flow = new LocalWorkflow("deliver-product", container)
const transaction = await flow.run("t-id")
expect(handlers.get("foo").invoke).toHaveBeenCalledTimes(1)
expect(handlers.get("callExternal").invoke).toHaveBeenCalledTimes(1)
expect(handlers.get("bar").invoke).toHaveBeenCalledTimes(0)
expect(transaction.getState()).toBe(TransactionState.INVOKING)
const continuation = await flow.registerStepFailure(
asyncStepIdempotencyKey,
{ ok: true }
)
expect(handlers.get("foo").compensate).toHaveBeenCalledTimes(1)
expect(handlers.get("bar").invoke).toHaveBeenCalledTimes(0)
expect(handlers.get("bar").compensate).toHaveBeenCalledTimes(0)
// Failed because the async is flagged as noCompensation
expect(continuation.getState()).toBe(TransactionState.FAILED)
})
it("should update a flow with a new step and a new handler", async () => {
const flow = new LocalWorkflow("create-product", container)
const additionalHandler = {
invoke: jest.fn().mockResolvedValue({ done: true }),
compensate: jest.fn().mockResolvedValue({}),
}
flow.insertActionBefore("bar", "xor", additionalHandler, { maxRetries: 3 })
const transaction = await flow.run("t-id")
expect(handlers.get("foo").invoke).toHaveBeenCalledTimes(1)
expect(handlers.get("bar").invoke).toHaveBeenCalledTimes(1)
expect(additionalHandler.invoke).toHaveBeenCalledTimes(1)
expect(transaction.getState()).toBe(TransactionState.DONE)
expect(
WorkflowManager.getWorkflow("create-product")?.handlers_.has("xor")
).toEqual(false)
})
})