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{
    "swagger": "2.0",
    "info": {
        "version": "4.0.6",
        "title": "CDAP Broker API"
    },
    "paths": {
        "/": {
            "get": {
                "description": "shows some information about this service",
                "responses": {
                    "200": {
                        "description": "successful response",
                        "schema": {
                            "$ref": "#/definitions/info"
                        }
                    }
                }
            }
        },
        "/application": {
            "get": {
                "description": "get all applications registered with this broker",
                "responses": {
                    "200": {
                        "description": "successful response",
                        "schema": {
                            "type": "array",
                            "items": {
                                "$ref": "#/definitions/appname"
                            }
                        }
                    }
                }
            }
        },
        "/application/delete": {
            "post": {
                "description": "endpoint to delete multiple applications at once. Returns an array of status codes, where statuscode[i] = response returned from DELETE(application/i)",
                "parameters": [
                    {
                        "name": "postbody",
                        "in": "body",
                        "description": "required post body",
                        "required": true,
                        "schema": {
                            "$ref": "#/definitions/multideleteput"
                        }
                    }
                ],
                "responses": {
                    "200": {
                        "description": "successful response",
                        "schema": {
                            "type": "array",
                            "items": {
                                "$ref": "#/definitions/returncode"
                            }
                        }
                    }
                }
            }
        },
        "/application/{appname}": {
            "parameters": [
                {
                    "name": "appname",
                    "in": "path",
                    "description": "Name of the application.",
                    "required": true,
                    "type": "string",
                    "format": "text"
                }
            ],
            "get": {
                "description": "Returns the representation of the application resource, including the links for healthcheck and metrics.",
                "responses": {
                    "200": {
                        "description": "Successful response",
                        "schema": {
                            "$ref": "#/definitions/Application"
                        }
                    },
                    "404": {
                        "description": "no app with name 'appname' registered with this broker."
                    }
                }
            },
            "put": {
                "description": "Register an app for service and configuration discovery. This will light up a metrics and health endpoint for this app. `appname` is assumed to also be the key in  consul.",
                "consumes": [
                    "application/json"
                ],
                "produces": [
                    "application/json"
                ],
                "parameters": [
                    {
                        "name": "putbody",
                        "in": "body",
                        "description": "required put body",
                        "required": true,
                        "schema": {
                            "$ref": "#/definitions/appput"
                        }
                    }
                ],
                "responses": {
                    "200": {
                        "description": "Successful response",
                        "schema": {
                            "$ref": "#/definitions/Application"
                        }
                    },
                    "400": {
                        "description": "put was performed but the appname was already registered with the broker, or Invalid PUT body"
                    }
                }
            },
            "delete": {
                "description": "Remove an app for service and configuration discovery. This will remove the metrics and health endpoints for this app.",
                "responses": {
                    "200": {
                        "description": "Successful response"
                    },
                    "404": {
                        "description": "no app with name 'appname' registered with this broker."
                    }
                }
            }
        },
        "/application*/{appname}": {
            "parameters": [
                {
                    "name": "appname",
                    "in": "path",
                    "description": "Name of the application.",
                    "required": true,
                    "type": "string",
                    "format": "text"
                }
            ],
            "put": {
                "description": "(This is a hacky way of supporting \"oneOf\" because Swagger does not support oneOf https://github.com/OAI/OpenAPI-Specification/issues/333. This is the same endpoint as PUT /application/appname, except the PUT body is different.)\n\nRegister a hydrator app for service and configuration discovery. This will light up a metrics and health endpoint for this app. `appname` is assumed to also be the key in  consul.",
                "consumes": [
                    "application/json"
                ],
                "produces": [
                    "application/json"
                ],
                "parameters": [
                    {
                        "name": "putbody",
                        "in": "body",
                        "description": "required put body",
                        "required": true,
                        "schema": {
                            "$ref": "#/definitions/hydratorappput"
                        }
                    }
                ],
                "responses": {
                    "200": {
                        "description": "Successful response",
                        "schema": {
                            "$ref": "#/definitions/Application"
                        }
                    },
                    "400": {
                        "description": "put was performed but the appname was already registered with the broker, or Invalid PUT body"
                    }
                }
            }
        },
        "/application/{appname}/metrics": {
            "get": {
                "description": "Get live (real-time) app specific metrics for the running app appname. Metrics are customized per each app by the component developer",
                "parameters": [
                    {
                        "name": "appname",
                        "in": "path",
                        "description": "Name of the application to get metrics for.",
                        "required": true,
                        "type": "string",
                        "format": "test"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "Successful response",
                        "schema": {
                            "$ref": "#/definitions/MetricsObject"
                        }
                    },
                    "404": {
                        "description": "no app with name 'appname' registered with this broker."
                    }
                }
            }
        },
        "/application/{appname}/healthcheck": {
            "get": {
                "description": "Perform a healthcheck on the running app appname.",
                "parameters": [
                    {
                        "name": "appname",
                        "in": "path",
                        "description": "Name of the application to get the healthcheck for.",
                        "required": true,
                        "type": "string",
                        "format": "test"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "Successful response, healthcheck pass"
                    },
                    "404": {
                        "description": "no app with name 'appname' registered with this broker, or the healthcheck has failed (though I would like to disambiguiate from the first case, CDAP returns a 404 for this)."
                    }
                }
            }
        },
        "/application/{appname}/reconfigure": {
            "parameters": [
                {
                    "name": "appname",
                    "in": "path",
                    "description": "Name of the application.",
                    "required": true,
                    "type": "string",
                    "format": "text"
                }
            ],
            "put": {
                "description": "Reconfigures the application.",
                "parameters": [
                    {
                        "name": "putbody",
                        "in": "body",
                        "description": "required put body",
                        "required": true,
                        "schema": {
                            "$ref": "#/definitions/reconfigput"
                        }
                    }
                ],
                "responses": {
                    "200": {
                        "description": "Successful response"
                    },
                    "400": {
                        "description": "Bad request. Can happen with 1)  {appname} is not registered with the broker, 2) the required PUT body is wrong, or 3) the smart interface was chosen and none of the config keys match anything in app_config or app_preferences"
                    }
                }
            }
        }
    },
    "definitions": {
        "MetricsObject": {
            "type": "object",
            "description": "key,value object where the key is 'appmetrics' and the value is an app dependent json and specified by the component developer",
            "properties": {
                "appmetrics": {
                    "type": "object"
                }
            }
        },
        "Application": {
            "type": "object",
            "properties": {
                "appname": {
                    "description": "application name",
                    "type": "string"
                },
                "healthcheckurl": {
                    "description": "fully qualified url to perform healthcheck",
                    "type": "string"
                },
                "metricsurl": {
                    "description": "fully qualified url to get metrics from",
                    "type": "string"
                },
                "url": {
                    "description": "fully qualified url of the resource",
                    "type": "string"
                },
                "connectionurl": {
                    "description": "input URL that you can POST data into (URL of the CDAP stream)",
                    "type": "string"
                },
                "serviceendpoints": {
                    "description": "a list of HTTP services exposed by this CDAP application",
                    "type": "array",
                    "items": {
                        "$ref": "#/definitions/service_method"
                    }
                }
            }
        },
        "reconfigput": {
            "type": "object",
            "properties": {
                "reconfiguration_type": {
                    "description": "the type of reconfiguration",
                    "type": "string",
                    "enum": [
                        "program-flowlet-app-config",
                        "program-flowlet-app-preferences",
                        "program-flowlet-smart"
                    ]
                },
                "config": {
                    "description": "the config JSON",
                    "type": "object"
                }
            },
            "required": [
                "reconfiguration_type",
                "config"
            ]
        },
        "multideleteput": {
            "type": "object",
            "properties": {
                "appnames": {
                    "type": "array",
                    "items": {
                        "$ref": "#/definitions/appname"
                    }
                }
            }
        },
        "appname": {
            "description": "an application name",
            "type": "string"
        },
        "hydratorappput": {
            "type": "object",
            "properties": {
                "cdap_application_type": {
                    "description": "denotes whether this is a program-flowlet style application or a hydrator pipeline. For hydrator, this value must be \"hydrator-pipeline\"",
                    "type": "string",
                    "enum": [
                        "hydrator-pipeline"
                    ]
                },
                "namespace": {
                    "description": "the cdap namespace this is deployed into",
                    "type": "string"
                },
                "pipeline_config_json_url": {
                    "description": "the URL of the config.json for this pipeline",
                    "type": "string"
                },
                "streamname": {
                    "description": "name of the CDAP stream to ingest data into this app. Should come from the developer and Tosca model.",
                    "type": "string"
                },
                "dependencies": {
                    "description": "represents a list of dependencies to be loaded for this pipeline. Not required.",
                    "type": "array",
                    "items": {
                        "$ref": "#/definitions/hydratordep"
                    }
                }
            },
            "required": [
                "cdap_application_type",
                "namespace",
                "pipeline_config_json_url",
                "streamname"
            ]
        },
        "appput": {
            "type": "object",
            "properties": {
                "cdap_application_type": {
                    "description": "denotes whether this is a program-flowlet style application or a hydrator pipeline. For program-flowlet style apps, this value must be \"program-flowlet\"",
                    "type": "string",
                    "enum": [
                        "program-flowlet"
                    ]
                },
                "streamname": {
                    "description": "name of the CDAP stream to ingest data into this app. Should come from the developer and Tosca model.",
                    "type": "string"
                },
                "namespace": {
                    "description": "the cdap namespace this is deployed into",
                    "type": "string"
                },
                "jar_url": {
                    "description": "the URL that the JAR you're deploying resides",
                    "type": "string"
                },
                "artifact_name": {
                    "description": "the name of the CDAP artifact to be added",
                    "type": "string"
                },
                "artifact_ver": {
                    "description": "the version of the artifact. Must be in X.Y.Z form"
                },
                "app_config": {
                    "description": "the application config JSON",
                    "type": "object"
                },
                "app_preferences": {
                    "description": "the application preferences JSON",
                    "type": "object"
                },
                "programs": {
                    "type": "array",
                    "items": {
                        "$ref": "#/definitions/programs"
                    }
                },
                "program_preferences": {
                    "type": "array",
                    "items": {
                        "$ref": "#/definitions/programpref"
                    }
                },
                "services": {
                    "type": "array",
                    "items": {
                        "$ref": "#/definitions/service_endpoint"
                    }
                }
            }
        },
        "service_endpoint": {
            "description": "descirbes a service endpoint, including the service name, the method name, and the method type (GET, PUT, etc, most of the time will be GET)",
            "type": "object",
            "properties": {
                "service_name": {
                    "type": "string",
                    "description": "the name of the service"
                },
                "service_endpoint": {
                    "type": "string",
                    "description": "the name of the endpoint on the service"
                },
                "endpoint_method": {
                    "type": "string",
                    "description": "GET, POST, PUT, etc"
                }
            }
        },
        "service_method": {
            "description": "a URL and HTTP method exposed via a CDAP service",
            "type": "object",
            "properties": {
                "url": {
                    "type": "string",
                    "description": "the fully qualified URL in CDAP for this service"
                },
                "method": {
                    "type": "string",
                    "description": "HTTP method you can perform on the URL, e.g., GET, PUT, etc"
                }
            }
        },
        "programs": {
            "description": "the list of programs in this CDAP app",
            "type": "object",
            "properties": {
                "program_type": {
                    "description": "must be one of flows, mapreduce, schedules, spark, workflows, workers, or services",
                    "type": "string"
                },
                "program_id": {
                    "description": "the name of the program",
                    "type": "string"
                }
            }
        },
        "returncode": {
            "description": "an httpreturncode",
            "type": "integer"
        },
        "hydratordep": {
            "description": "represents a hydrator pipeline dependency. An equivelent to the following CURLs are formed with the below four params shown in CAPS \"curl -v -w\"\\n\" -X POST http://cdapurl:11015/v3/namespaces/setelsewhere/artifacts/ARTIFACT_NAME -H \"Artifact-Extends:ARTIFACT_EXTENDS_HEADER\"  -H “Artifact-Version:ARTIFACT_VERSION_HEADER” --data-binary @(DOWNLOADED FROM ARTIFACT_URL)\",\"curl -v -w\"\\n\" -X PUT http://cdapurl:11015/v3/namespaces/setelsewhere/artifacts/ARTIFACT_NAME/versions/ARTIFACT_VERSION_HEADER/properties -d (DOWNLOADED FROM UI_PROPERTIES_URL)\"",
            "properties": {
                "artifact_extends_header": {
                    "description": "the value of the header that gets passed in for artifact-extends, e.g., \"Artifact-Extends:system:cdap-data-pipeline[4.0.1,5.0.0)\"",
                    "type": "string"
                },
                "artifact_name": {
                    "description": "the name of the artifact",
                    "type": "string"
                },
                "artifact_version_header": {
                    "description": "the value of the header that gets passed in for artifact-version, e.g., \"Artifact-Version:1.0.0-SNAPSHOT\"",
                    "type": "string"
                },
                "artifact_url": {
                    "description": "the URL of the artifact JAR",
                    "type": "string"
                },
                "ui_properties_url": {
                    "description": "the URL of the properties.json if the custom artifact has UI properties. This is optional.",
                    "type": "string"
                }
            },
            "required": [
                "artifact_extends_header",
                "artifact_name",
                "artifact_version_header",
                "artifact_url"
            ]
        },
        "programpref": {
            "description": "the list of programs in this CDAP app",
            "type": "object",
            "properties": {
                "program_type": {
                    "description": "must be one of flows, mapreduce, schedules, spark, workflows, workers, or services",
                    "type": "string"
                },
                "program_id": {
                    "description": "the name of the program",
                    "type": "string"
                },
                "program_pref": {
                    "description": "the preference JSON to set for this program",
                    "type": "object"
                }
            }
        },
        "info": {
            "description": "some broker information",
            "type": "object",
            "properties": {
                "managed cdap url": {
                    "description": "the url of the CDAP cluster API this broker is managing",
                    "type": "string"
                },
                "number of applications registered": {
                    "type": "integer"
                },
                "uptime (s)": {
                    "type": "integer"
                },
                "cdap GUI port": {
                    "type": "integer",
                    "description": "The GUI port of the CDAP cluster this broker is managing. Mostly to help users of this API check their application in cdap. Note, will return UNKNOWN_CDAP_VERSION if it cannot be determined."
                },
                "cdap cluster version": {
                    "type": "string",
                    "description": "the version of the CDAP cluster this broker is managing. Note, will return UKNOWN_CDAP_VERSION if it cannot be determined."
                },
                "broker API version": {
                    "type": "string",
                    "description": "the API version of this running broker"
                }
            }
        }
    }
}