ArangoDB: Server error when trying to create a vertex using gharial interface

Question

I'm having problems with vertex creation using gharial everytime i try to send a non-empty payload.

A simple code such as:

import requests
url = "http://localhost:8529/_db/test_db/_api/gharial/MyGraph/vertex/Humans"
payload = {"name" : "tesla"}
r = requests.post(url, data = payload)

Returns a: <Response [500]>

With the following body:

A runtime error occurred while executing an action: SyntaxError: Unexpected token a SyntaxError: Unexpected token a
  at Object.parse (native)
  at Object.requestFunctions.body ([object Object]:23:21)
  at extractElement (/usr/share/arangodb/js/server/modules/org/arangodb/foxx/request_context.js:56:18)
  at /usr/share/arangodb/js/server/modules/org/arangodb/foxx/request_context.js:75:45
  at execute (/usr/share/arangodb/js/server/modules/org/arangodb/actions.js:951:7)
  at next (/usr/share/arangodb/js/server/modules/org/arangodb/actions.js:968:7)
  at [object Object]:169:5
  at execute (/usr/share/arangodb/js/server/modules/org/arangodb/actions.js:951:7)
  at Object.routeRequest (/usr/share/arangodb/js/server/modules/org/arangodb/actions.js:972:3)
  at Function.actions.defineHttp.callback (/usr/share/arangodb/js/actions/api-system.js:52:15)

This error was triggered by the following route {"path":"/_api/gharial/[^/]+/vertex/[^/]+","regexp":{},"prefix":false,"depth":5,"urlParameters":{"graph":2,"collection":4},"callback":{"options":{},"methods":["DELETE","GET","HEAD","OPTIONS","POST","PUT","PATCH"]},"route":{"url":{"match":"/:graph/vertex/:collection","methods":["post"],"constraint":{"graph":"/[^/]+/","collection":"/[^/]+/"}},"action":{},"docs":{"parameters":[{"name":"vertex","paramType":"body","description":"The document to be stored","dataType":"vertex"},{"paramType":"path","name":"graph","description":"Name of the graph.","dataType":"string"},{"paramType":"path","name":"collection","description":"Name of the vertex collection.","dataType":"string"},{"paramType":"query","name":"waitForSync","description":"define if the request should wait until synced to disk.","dataType":"boolean"}],"errorResponses":[{"code":404,"reason":"Graph or collection not found."}],"httpMethod":"POST","nickname":"post_graph_vertex_collection","summary":"Create a new vertex.","notes":"\nStores a new vertex with the information contained\nwithin the body into the given collection.\n"},"context":"/"}}

I'm running ArangoDB 2.2.6.

Thanks for your help,

stj · Accepted Answer · 2014-11-18 00:43:52Z

3

The reason for the HTTP 500 is that the POST request is not JSON-encoded.

I think it should work if the code is adjusted to:

import requests
import json
url = "http://localhost:8529/_db/test_db/_api/gharial/MyGraph/vertex/Humans"
payload = {"name" : "tesla"}
r = requests.post(url, data = json.dumps(payload))

answered Nov 18, 2014 at 0:43

stj

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