Get an element instance

GET

/v2/element-instances/{elementInstanceKey}

HttpRequest request = HttpRequest.newBuilder()
    .uri(URI.create("http://localhost:8080/v2/element-instances/2251799813685249"))
    .header("Authorization", "Bearer <token>")
    .method("GET", HttpRequest.BodyPublishers.noBody())
    .build();
HttpResponse<String> response = HttpClient.newHttpClient().send(request, HttpResponse.BodyHandlers.ofString());
System.out.println(response.body());

const url = 'http://localhost:8080/v2/element-instances/2251799813685249';
const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}

curl --request GET \
  --url http://localhost:8080/v2/element-instances/2251799813685249 \
  --header 'Authorization: Bearer <token>'

Available inEmbeddedBundledCluster

AuthAuthenticated Bearer token or console session · requires history:read

One element instance of the caller’s tenant, as the element-instance search answers it; an unknown key is 404.

Authorizations

bearerAuth
sessionCookie

Parameters

Path Parameters

elementInstanceKey

required

Positive signed 64-bit entity key, written as a decimal string.

string

/^[1-9][0-9]*$/

Header Parameters

x-tenant-id

string

>= 1 characters

Tenant selection. A principal bound to one tenant may omit it; if sent, it must equal that tenant (403 otherwise). A principal that may act in several tenants must send it on every request: without it the request is refused with 400, and a tenant it may not act in is refused with 403.

Responses

200

The element instance.

application/json

object

processDefinitionId

required

string

startDate

required

An RFC 3339 timestamp.

string format: date-time

endDate

required

Any of:

string
null

An RFC 3339 timestamp.

string format: date-time

elementId

required

string

elementName

required

Element names are not retained.

string

type

required

The BPMN element type, for example SERVICE_TASK.

string

state

required

string

Allowed values: ACTIVE COMPLETED TERMINATED

hasIncident

required

boolean

tenantId

required

string

elementInstanceKey

required

Positive signed 64-bit entity key, written as a decimal string.

string

/^[1-9][0-9]*$/

processInstanceKey

required

Positive signed 64-bit entity key, written as a decimal string.

string

/^[1-9][0-9]*$/

rootProcessInstanceKey

required

Part of the wire shape. This release always sends null.

null

processDefinitionKey

required

Positive signed 64-bit entity key, written as a decimal string.

string

/^[1-9][0-9]*$/

incidentKey

required

Part of the wire shape. This release always sends null.

null

Example

{
  "elementName": "",
  "state": "ACTIVE",
  "hasIncident": false,
  "elementInstanceKey": "2251799813685249",
  "processInstanceKey": "2251799813685249",
  "processDefinitionKey": "2251799813685249"
}

400

The request is malformed, or it uses a property or filter this release does not support.

application/problem+json

An RFC 9457 problem document. type is a stable TinyConductor URN.

object

type

required

string

/^urn:bpm:error:/

title

required

string

status

required

integer

>= 400 <= 599

detail

required

string

instance

required

The request path.

string

mode

Present only on mode-not-supported. It names the engine’s mode.

string

Example

{
  "type": "urn:bpm:error:invalid-argument",
  "title": "Bad Request",
  "status": 400,
  "detail": "entity key must be a positive int64 string",
  "instance": "/v2/process-instances/0"
}

401

No valid credential was presented.

application/problem+json

An RFC 9457 problem document. type is a stable TinyConductor URN.

object

type

required

string

/^urn:bpm:error:/

title

required

string

status

required

integer

>= 400 <= 599

detail

required

string

instance

required

The request path.

string

mode

Present only on mode-not-supported. It names the engine’s mode.

string

Example

{
  "type": "urn:bpm:error:unauthorized",
  "title": "Unauthorized",
  "status": 401,
  "detail": "A valid bearer credential is required",
  "instance": "/v2/element-instances/2251799813685262"
}

Headers

WWW-Authenticate

string

Allowed value: Bearer

403

The caller lacks the required permission, a tenant named in the request is not the caller’s tenant, or a cookie write has no valid CSRF token.

application/problem+json

An RFC 9457 problem document. type is a stable TinyConductor URN.

object

type

required

string

/^urn:bpm:error:/

title

required

string

status

required

integer

>= 400 <= 599

detail

required

string

instance

required

The request path.

string

mode

Present only on mode-not-supported. It names the engine’s mode.

string

Example

{
  "type": "urn:bpm:error:forbidden",
  "title": "Forbidden",
  "status": 403,
  "detail": "The principal lacks the action this route requires",
  "instance": "/v2/element-instances/2251799813685262"
}

404

The entity does not exist in the caller’s tenant.

application/problem+json

An RFC 9457 problem document. type is a stable TinyConductor URN.

object

type

required

string

/^urn:bpm:error:/

title

required

string

status

required

integer

>= 400 <= 599

detail

required

string

instance

required

The request path.

string

mode

Present only on mode-not-supported. It names the engine’s mode.

string

Example

{
  "type": "urn:bpm:error:not-found",
  "title": "Not Found",
  "status": 404,
  "detail": "The requested resource does not exist",
  "instance": "/v2/element-instances/2251799813685262"
}

500

An internal failure. The details are never exposed.

application/problem+json

An RFC 9457 problem document. type is a stable TinyConductor URN.

object

type

required

string

/^urn:bpm:error:/

title

required

string

status

required

integer

>= 400 <= 599

detail

required

string

instance

required

The request path.

string

mode

Present only on mode-not-supported. It names the engine’s mode.

string

Example

{
  "type": "urn:bpm:error:internal",
  "title": "Internal Server Error",
  "status": 500,
  "detail": "The request could not be completed",
  "instance": "/v2/element-instances/2251799813685262"
}

501

The operation is not offered in the engine’s current deployment mode.

application/problem+json

An RFC 9457 problem document. type is a stable TinyConductor URN.

object

type

required

string

/^urn:bpm:error:/

title

required

string

status

required

integer

>= 400 <= 599

detail

required

string

instance

required

The request path.

string

mode

Present only on mode-not-supported. It names the engine’s mode.

string

Example

{
  "type": "urn:bpm:error:mode-not-supported",
  "title": "Mode Not Supported",
  "status": 501,
  "detail": "/v2/clock is not supported in bundled mode: the deterministic virtual clock and the storage-free reset exist only for the Embedded engine; Bundled and Cluster run on the system clock over durable history, which cannot be pinned, rewound or discarded",
  "instance": "/v2/clock",
  "mode": "bundled"
}

503

Backpressure, or a dependency is not ready. Retry with the same idempotency key.

application/problem+json

An RFC 9457 problem document. type is a stable TinyConductor URN.

object

type

required

string

/^urn:bpm:error:/

title

required

string

status

required

integer

>= 400 <= 599

detail

required

string

instance

required

The request path.

string

mode

Present only on mode-not-supported. It names the engine’s mode.

string

Example

{
  "type": "urn:bpm:error:unavailable",
  "title": "Service Unavailable",
  "status": 503,
  "detail": "The required engine service is not ready",
  "instance": "/v2/element-instances/2251799813685262"
}