Pipelines

Register, list, detail and unregister stream processing pipelines

Overview

Streams are the backbone of all processing. Joule Management API provides the ability to register, list, detail and undeploy stream pipelines.

For further information on the structure of the content payload refer to this documentation.

Example stream content

{
  "stream": {
    "name": "basic_tumbling_window_pipeline",
    "enabled": true,
    "eventTimeType": "EVENT_TIME",
    "sources": [
      "nasdaq_quotes_stream"
    ],
    "processing unit": {
      "pipeline": [
        {
          "time window": {
            "emitting type": "tumblingQuoteAnalytics",
            "aggregate functions": {
              "FIRST": [
                "ask"
              ],
              "LAST": [
                "ask"
              ]
            },
            "policy": {
              "type": "tumblingTime",
              "window size": 1000
            }
          }
        }
      ]
    },
    "emit": {
      "select": "symbol, ask_FIRST, ask_LAST"
    },
    "group by": [
      "symbol"
    ]
  }
}

Register a stream

post

Register a use case stream and validate it before starting up

Body

application/json

namestringOptional

enabledbooleanRequired

sourcesstring[]Optional

bufferSizeinteger · int32Required

checkPointProcessingbooleanRequired

groupByAttributesstring[]Optional

streamTimeTypestring · enumOptionalPossible values:

propertiesPathstringOptional

consumerQueueSizeinteger · int32Required

consumingFrequencyinteger · int64Required

publishingQueueSizeinteger · int32Required

publishingFrequencyinteger · int64Required

validFromstring · date-timeOptional

validTostring · date-timeOptional

asyncProcessingbooleanRequired

Responses

201

Successful registered stream

No content

500

Failed to register stream due to malformed or missing DSL

501

Invalid stream definition

502

Stream has already been registered

post

/joule/management/stream/register

HTTPcURLJavaScriptPython

POST /joule/management/stream/register HTTP/1.1
Content-Type: application/json
Accept: */*
Content-Length: 4470

{
  "name": "text",
  "enabled": true,
  "sources": [
    "text"
  ],
  "bufferSize": 1,
  "checkPointProcessing": true,
  "groupbyKey": {
    "keys": [
      "text"
    ],
    "partitionKey": 1
  },
  "groupByAttributes": [
    "text"
  ],
  "streamTimeType": "INGEST_TIME",
  "propertiesPath": "text",
  "consumerQueueSize": 1,
  "consumingFrequency": 1,
  "publishingQueueSize": 1,
  "publishingFrequency": 1,
  "telemetryAuditingSpecification": {
    "name": "text",
    "enabled": true,
    "rawTelemetrySpecification": {
      "cloneEvents": true,
      "auditFrequency": 1
    },
    "processedTelemetrySpecification": {
      "cloneEvents": true,
      "auditFrequency": 1
    }
  },
  "validFrom": "2026-03-16T16:00:27.282Z",
  "validTo": "2026-03-16T16:00:27.282Z",
  "asyncProcessing": true,
  "initialisationSpecification": {
    "tableImportProcessor": {
      "parquetImportConfigurations": [
        {
          "schema": "text",
          "files": [
            "text"
          ],
          "table": "text",
          "asView": true,
          "index": {
            "schema": "text",
            "fields": [
              "text"
            ],
            "unique": true
          }
        }
      ],
      "schema": "text",
      "name": "text",
      "enabled": true
    },
    "modelImporter": {
      "empty": true,
      "": {},
      "orDefault": {},
      "name": "text",
      "enabled": true
    },
    "name": "text",
    "enabled": true
  },
  "processingUnitSpecification": {
    "name": "text",
    "enabled": true,
    "metricsEngineSpecification": {
      "metricsDefinitionSpecification": {
        "metrics": [
          {
            "name": "text",
            "query": "text",
            "tableDefinition": "text",
            "metricKey": "text",
            "compactionSpecification": {
              "frequency": 1,
              "timeUnit": "NANOSECONDS",
              "userDefinedCompactionQuery": "text"
            },
            "cleanOnStart": true,
            "enabled": true
          }
        ],
        "name": "text",
        "enabled": true
      },
      "policy": {
        "timeUnit": "NANOSECONDS",
        "frequency": 1,
        "startupDelay": 1
      },
      "name": "text",
      "enabled": true
    },
    "processorPipeline": [
      {
        "uUID": "text",
        "metrics": {
          "metricsMap": {
            "ANY_ADDITIONAL_PROPERTY": {
              "": 1,
              "andSet": 1,
              "andIncrement": 1,
              "andDecrement": 1,
              "andAdd": 1,
              "andUpdate": 1,
              "andAccumulate": 1,
              "plain": 1,
              "opaque": 1,
              "acquire": 1
            }
          },
          "metric": 1
        }
      }
    ]
  },
  "selectProcessor": {
    "context": {
      "": {},
      "present": true,
      "empty": true
    },
    "uUID": "text",
    "name": "text",
    "properties": {
      "property": "text",
      "empty": true,
      "": {},
      "orDefault": {}
    },
    "cloneEvent": true,
    "stateful": true,
    "dataStores": {
      "ANY_ADDITIONAL_PROPERTY": {
        "name": "text",
        "enabled": true,
        "initialImage": {},
        "storeName": "text",
        "getInitialImage": true,
        "initialImageQuery": "text",
        "store": {
          "metaData": {
            "description": "text",
            "constantJoinFields": "[Circular Reference]",
            "specification": {
              "name": "text",
              "enabled": true
            }
          },
          "storeType": "KEY_VALUE",
          "initialImage": {
            "": {},
            "present": true,
            "empty": true
          }
        },
        "storeType": "KEY_VALUE"
      }
    },
    "groupbyKey": {
      "keys": [
        "text"
      ],
      "partitionKey": 1
    },
    "jouleDBQueryInterface": {
      "name": "text",
      "enabled": true,
      "initialImage": {},
      "storeName": "text",
      "getInitialImage": true,
      "initialImageQuery": "text",
      "store": {
        "metaData": {
          "description": "text",
          "constantJoinFields": "[Circular Reference]",
          "specification": {
            "name": "text",
            "enabled": true
          }
        },
        "storeType": "KEY_VALUE",
        "initialImage": {
          "": {},
          "present": true,
          "empty": true
        }
      },
      "storeType": "KEY_VALUE"
    },
    "metrics": {
      "metricsMap": {
        "ANY_ADDITIONAL_PROPERTY": {
          "": 1,
          "andSet": 1,
          "andIncrement": 1,
          "andDecrement": 1,
          "andAdd": 1,
          "andUpdate": 1,
          "andAccumulate": 1,
          "plain": 1,
          "opaque": 1,
          "acquire": 1
        }
      },
      "metric": 1
    },
    "enabled": true,
    "eventsProcessed": 1,
    "eventsDiscarded": 1,
    "eventsFailed": 1,
    "eventsReceived": 1,
    "eventsIgnored": 1,
    "eventsQueued": 1,
    "responseEventType": "text",
    "projectionExpression": "text",
    "selectAttributes": [
      {
        "originalExpression": "text",
        "metricFamily": "text",
        "metrics": "text",
        "metricKey": "text",
        "metricTokens": [
          "text"
        ],
        "alias": "text",
        "type": "SEARCH_PATH",
        "searchPath": [
          "text"
        ],
        "mathProcessor": {
          "context": {
            "": {},
            "present": true,
            "empty": true
          },
          "uUID": "text",
          "name": "text",
          "properties": {
            "property": "text",
            "empty": true,
            "": {},
            "orDefault": {}
          },
          "cloneEvent": true,
          "stateful": true,
          "dataStores": {
            "ANY_ADDITIONAL_PROPERTY": "[Circular Reference]"
          },
          "groupbyKey": {
            "keys": [
              "text"
            ],
            "partitionKey": 1
          },
          "jouleDBQueryInterface": {
            "name": "text",
            "enabled": true,
            "initialImage": {},
            "storeName": "text",
            "getInitialImage": true,
            "initialImageQuery": "text",
            "store": {
              "metaData": {
                "description": "text",
                "constantJoinFields": "[Circular Reference]",
                "specification": {
                  "name": "text",
                  "enabled": true
                }
              },
              "storeType": "KEY_VALUE",
              "initialImage": {
                "": {},
                "present": true,
                "empty": true
              }
            },
            "storeType": "KEY_VALUE"
          },
          "metrics": {
            "metricsMap": {
              "ANY_ADDITIONAL_PROPERTY": {
                "": 1,
                "andSet": 1,
                "andIncrement": 1,
                "andDecrement": 1,
                "andAdd": 1,
                "andUpdate": 1,
                "andAccumulate": 1,
                "plain": 1,
                "opaque": 1,
                "acquire": 1
              }
            },
            "metric": 1
          },
          "enabled": true,
          "eventsProcessed": 1,
          "eventsDiscarded": 1,
          "eventsFailed": 1,
          "eventsReceived": 1,
          "eventsIgnored": 1,
          "eventsQueued": 1,
          "previousComputedValue": {},
          "responseDataType": "DOUBLE",
          "expression": "text",
          "language": "text",
          "variables": {
            "ANY_ADDITIONAL_PROPERTY": {}
          }
        },
        "queryPredicate": "text",
        "parameters": [
          "text"
        ],
        "aliase": "text"
      }
    ]
  }
}

No content

List all streams

get

List all streams registered within Joule node

Responses

201

Successful list streams

No content

500

Internal Joule error. Check log files.

get

/joule/management/stream/list

HTTPcURLJavaScriptPython

GET /joule/management/stream/list HTTP/1.1
Accept: */*

No content

Get stream specification

get

Get the stream processing specification of a registered stream

Query parameters

namestringRequired

Name of stream configuration.

Responses

201

Successful detail provided for stream

application/json

namestringOptional

enabledbooleanRequired

sourcesstring[]Optional

bufferSizeinteger · int32Required

checkPointProcessingbooleanRequired

groupByAttributesstring[]Optional

streamTimeTypestring · enumOptionalPossible values:

propertiesPathstringOptional

consumerQueueSizeinteger · int32Required

consumingFrequencyinteger · int64Required

publishingQueueSizeinteger · int32Required

publishingFrequencyinteger · int64Required

validFromstring · date-timeOptional

validTostring · date-timeOptional

asyncProcessingbooleanRequired

404

Stream not found

500

Internal Joule error. Check log files.

501

Unknown stream.

get

/joule/management/stream/detail

HTTPcURLJavaScriptPython

GET /joule/management/stream/detail?name=text HTTP/1.1
Accept: */*

{
  "name": "text",
  "enabled": true,
  "sources": [
    "text"
  ],
  "bufferSize": 1,
  "checkPointProcessing": true,
  "groupbyKey": {
    "keys": [
      "text"
    ],
    "partitionKey": 1
  },
  "groupByAttributes": [
    "text"
  ],
  "streamTimeType": "INGEST_TIME",
  "propertiesPath": "text",
  "consumerQueueSize": 1,
  "consumingFrequency": 1,
  "publishingQueueSize": 1,
  "publishingFrequency": 1,
  "telemetryAuditingSpecification": {
    "name": "text",
    "enabled": true,
    "rawTelemetrySpecification": {
      "cloneEvents": true,
      "auditFrequency": 1
    },
    "processedTelemetrySpecification": {
      "cloneEvents": true,
      "auditFrequency": 1
    }
  },
  "validFrom": "2026-03-16T16:00:27.282Z",
  "validTo": "2026-03-16T16:00:27.282Z",
  "asyncProcessing": true,
  "initialisationSpecification": {
    "tableImportProcessor": {
      "parquetImportConfigurations": [
        {
          "schema": "text",
          "files": [
            "text"
          ],
          "table": "text",
          "asView": true,
          "index": {
            "schema": "text",
            "fields": [
              "text"
            ],
            "unique": true
          }
        }
      ],
      "schema": "text",
      "name": "text",
      "enabled": true
    },
    "modelImporter": {
      "empty": true,
      "": {},
      "orDefault": {},
      "name": "text",
      "enabled": true
    },
    "name": "text",
    "enabled": true
  },
  "processingUnitSpecification": {
    "name": "text",
    "enabled": true,
    "metricsEngineSpecification": {
      "metricsDefinitionSpecification": {
        "metrics": [
          {
            "name": "text",
            "query": "text",
            "tableDefinition": "text",
            "metricKey": "text",
            "compactionSpecification": {
              "frequency": 1,
              "timeUnit": "NANOSECONDS",
              "userDefinedCompactionQuery": "text"
            },
            "cleanOnStart": true,
            "enabled": true
          }
        ],
        "name": "text",
        "enabled": true
      },
      "policy": {
        "timeUnit": "NANOSECONDS",
        "frequency": 1,
        "startupDelay": 1
      },
      "name": "text",
      "enabled": true
    },
    "processorPipeline": [
      {
        "uUID": "text",
        "metrics": {
          "metricsMap": {
            "ANY_ADDITIONAL_PROPERTY": {
              "": 1,
              "andSet": 1,
              "andIncrement": 1,
              "andDecrement": 1,
              "andAdd": 1,
              "andUpdate": 1,
              "andAccumulate": 1,
              "plain": 1,
              "opaque": 1,
              "acquire": 1
            }
          },
          "metric": 1
        }
      }
    ]
  },
  "selectProcessor": {
    "context": {
      "": {},
      "present": true,
      "empty": true
    },
    "uUID": "text",
    "name": "text",
    "properties": {
      "property": "text",
      "empty": true,
      "": {},
      "orDefault": {}
    },
    "cloneEvent": true,
    "stateful": true,
    "dataStores": {
      "ANY_ADDITIONAL_PROPERTY": {
        "name": "text",
        "enabled": true,
        "initialImage": {},
        "storeName": "text",
        "getInitialImage": true,
        "initialImageQuery": "text",
        "store": {
          "metaData": {
            "description": "text",
            "constantJoinFields": "[Circular Reference]",
            "specification": {
              "name": "text",
              "enabled": true
            }
          },
          "storeType": "KEY_VALUE",
          "initialImage": {
            "": {},
            "present": true,
            "empty": true
          }
        },
        "storeType": "KEY_VALUE"
      }
    },
    "groupbyKey": {
      "keys": [
        "text"
      ],
      "partitionKey": 1
    },
    "jouleDBQueryInterface": {
      "name": "text",
      "enabled": true,
      "initialImage": {},
      "storeName": "text",
      "getInitialImage": true,
      "initialImageQuery": "text",
      "store": {
        "metaData": {
          "description": "text",
          "constantJoinFields": "[Circular Reference]",
          "specification": {
            "name": "text",
            "enabled": true
          }
        },
        "storeType": "KEY_VALUE",
        "initialImage": {
          "": {},
          "present": true,
          "empty": true
        }
      },
      "storeType": "KEY_VALUE"
    },
    "metrics": {
      "metricsMap": {
        "ANY_ADDITIONAL_PROPERTY": {
          "": 1,
          "andSet": 1,
          "andIncrement": 1,
          "andDecrement": 1,
          "andAdd": 1,
          "andUpdate": 1,
          "andAccumulate": 1,
          "plain": 1,
          "opaque": 1,
          "acquire": 1
        }
      },
      "metric": 1
    },
    "enabled": true,
    "eventsProcessed": 1,
    "eventsDiscarded": 1,
    "eventsFailed": 1,
    "eventsReceived": 1,
    "eventsIgnored": 1,
    "eventsQueued": 1,
    "responseEventType": "text",
    "projectionExpression": "text",
    "selectAttributes": [
      {
        "originalExpression": "text",
        "metricFamily": "text",
        "metrics": "text",
        "metricKey": "text",
        "metricTokens": [
          "text"
        ],
        "alias": "text",
        "type": "SEARCH_PATH",
        "searchPath": [
          "text"
        ],
        "mathProcessor": {
          "context": {
            "": {},
            "present": true,
            "empty": true
          },
          "uUID": "text",
          "name": "text",
          "properties": {
            "property": "text",
            "empty": true,
            "": {},
            "orDefault": {}
          },
          "cloneEvent": true,
          "stateful": true,
          "dataStores": {
            "ANY_ADDITIONAL_PROPERTY": "[Circular Reference]"
          },
          "groupbyKey": {
            "keys": [
              "text"
            ],
            "partitionKey": 1
          },
          "jouleDBQueryInterface": {
            "name": "text",
            "enabled": true,
            "initialImage": {},
            "storeName": "text",
            "getInitialImage": true,
            "initialImageQuery": "text",
            "store": {
              "metaData": {
                "description": "text",
                "constantJoinFields": "[Circular Reference]",
                "specification": {
                  "name": "text",
                  "enabled": true
                }
              },
              "storeType": "KEY_VALUE",
              "initialImage": {
                "": {},
                "present": true,
                "empty": true
              }
            },
            "storeType": "KEY_VALUE"
          },
          "metrics": {
            "metricsMap": {
              "ANY_ADDITIONAL_PROPERTY": {
                "": 1,
                "andSet": 1,
                "andIncrement": 1,
                "andDecrement": 1,
                "andAdd": 1,
                "andUpdate": 1,
                "andAccumulate": 1,
                "plain": 1,
                "opaque": 1,
                "acquire": 1
              }
            },
            "metric": 1
          },
          "enabled": true,
          "eventsProcessed": 1,
          "eventsDiscarded": 1,
          "eventsFailed": 1,
          "eventsReceived": 1,
          "eventsIgnored": 1,
          "eventsQueued": 1,
          "previousComputedValue": {},
          "responseDataType": "DOUBLE",
          "expression": "text",
          "language": "text",
          "variables": {
            "ANY_ADDITIONAL_PROPERTY": {}
          }
        },
        "queryPredicate": "text",
        "parameters": [
          "text"
        ],
        "aliase": "text"
      }
    ]
  }
}

Unregister stream

delete

Unregister a stream processing specification from platform

Query parameters

namestringRequired

Name of stream to unregistered

Example: quoteStream

Responses

201

Successfully unregistered stream

No content

500

Failed to unregister stream . Check Joule service log files.

501

Unknown stream.

502

Stream name must be provided.

delete

/joule/management/stream/unregister

HTTPcURLJavaScriptPython

DELETE /joule/management/stream/unregister?name=quoteStream HTTP/1.1
Accept: */*

No content