Help Center/ Graph Engine Service/ API Reference (ME-Abu Dhabi Region)/ Management Plane APIs/ Graph Management APIs/ Incrementally Importing Data to Graphs
Updated on 2022-02-22 GMT+08:00
View PDF
Share

Incrementally Importing Data to Graphs

Function

This API is used to import data to graphs incrementally.

To prevent failures in restoring the imported graph data during system restarting, do not delete the data stored on OBS when the graph is in use.

URI

POST /v1.0/{project_id}/graphs/{graph_id}/action

Table 1 URI parameters

Parameter

Mandatory

Type

Description

project_id

Yes

String

Project ID, which is used for resource isolation. For details, see Obtaining a Project ID.

graph_id

Yes

String

Graph ID
Table 2 Query parameters

Parameter

Mandatory

Type

Description

action_id

Yes

String

Graph action ID

The value can be:

  • import-graph

Request Parameters

Table 3 Parameters in the request header

Parameter

Mandatory

Type

Description

X-Auth-Token

Yes

String

User token. The token can be obtained by calling the IAM API. (The token is the value of X-Subject-Token in the response header.)
Table 4 Request body parameters

Parameter

Mandatory

Type

Description

edgesetPath

No

String

Edge file directory or name

edgesetFormat

No

String

Format of the edge data set. Currently, only the CSV format is supported.

The CSV format is used by default.

vertexsetPath

No

String

Vertex file directory or name

vertexsetFormat

No

String

Format of the vertex data set. Currently, only the CSV format is supported.

The CSV format is used by default.

schemaPath

No

String

Path for storing the metadata file of the new data.

logDir

No

String

Directory for storing logs of imported graphs. This directory stores the data that fails to be imported during graph creation and detailed error causes.

parallelEdge

No

Object

Repetitive edge processing

action

No

String

Processing mode of repetitive edges. The value can be allow, ignore, or override. The default value is allow.

  • allow indicates that repetitive edges are allowed.
  • ignore indicates that subsequent repetitive edges are ignored.
  • override indicates that the previous repetitive edges are overwritten.

ignoreLabel

No

Boolean

Whether to ignore labels on repetitive edges. The value is true or false, and the default value is true.

  • true: Indicates that the repetitive edge definition does not contain the label. That is, the <source vertex, target vertex> indicates an edge, excluding the label information.
  • false: Indicates that the repetitive edge definition contains the label. That is, the <source vertex, target vertex, label> indicates an edge.

delimiter

No

String

Field separator in a CSV file. The default value is comma (,). The default element separator in a field of the list/set type is semicolon (;).

trimQuote

No

String

Field quote character in a CSV file. The default value is double quotation marks ("). It is used to enclose a field if the field contains separators or line breaks.

offline

No

Boolean

Whether offline import is selected. The value is true or false, and the default value is false.

  • true: Offline import is selected. The import speed is high, but the graph is locked and cannot be read or written during the import.
  • false: Online import is selected. Compared with offline import, online import is slower. However, the graph can be read (cannot be written) during the import.
  • For details about the value validity of the edgesetPath, vertexsetPath, schemaPath, and logDir character strings, see the OBS Object Name Restrictions.

Response Parameters

Status code: 200

Table 5 Response body parameter

Parameter

Type

Description

errorMessage

String

System prompt. If execution succeeds, this parameter may be left blank. If execution fails, this parameter is used to display the error message.

errorCode

String

System prompt. If execution succeeds, this parameter may be left blank. If execution fails, this parameter is used to display the error code.

jobId

String

Indicates the ID of an asynchronous job.

NOTE:

You can view the job execution status and obtain the return result by querying the job ID. For details, see Job Management APIs.

Example Request

POST http://Endpoint/v1.0/{project_id}/graphs/{graph_id}/action?action_id=import-graph
{
  "edgesetPath": "testbucket/demo_movie/edges/",
  "edgesetFormat": "csv",
  "vertexsetPath": "testbucket/demo_movie/vertices/",
  "vertexsetFormat": "csv",
  "schemaPath": "testbucket/demo_movie/incremental_data_schema.xml",
  "logDir": "testbucket/importlogdir",
  "parallelEdge": { 
           "action":"override",
           "ignoreLabel":true
   },
  "delimiter": ",",
  "trimQuote": "\"",
  "offline": true
}

Example Response

Status code: 200

OK

{
  "jobId" : "b4f2e9a0-0439-4edd-a3ad-199bb523b613"
}

Status code: 400

Bad Request

{
  "errorMessage" : "parameter format error",
  "errorCode" : "GES.8013"
}

Status Code

Status Code

Description

200

OK

400

Bad Request
Parent topic: Graph Management APIs