Variable substitution in uri module

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1

Hi all,

Similar to https://groups.google.com/forum/#!topic/ansible-project/ba5PPAgYGXc but slightly different.

I am trying to use variable substitution like so, putting the variable my_var in the body parameter, which should be a json string:

vars:
my_var: hello_world

tasks:

  • uri:
    url: https://localhost/api/v1/
    method: POST
    body: ‘{ “name”: “test”, “var”: “{{ my_var }}”, “location”: “usa” }’
    HEADER_Content-Type: “application/json”
    status_code: 201
    validate_certs: no
    user: admin
    password: password

I get this error (stacktrace with a TypeError: unhashable type):

TASK: [uri ] ******************************************************************
failed: [localhost] => {“failed”: true, “parsed”: false}
Traceback (most recent call last):
File “/Users/mzb/.ansible/tmp/ansible-tmp-1443729077.78-98124067847188/uri”, line 2067, in
main()
File “/Users/mzb/.ansible/tmp/ansible-tmp-1443729077.78-98124067847188/uri”, line 419, in main
resp, content, dest = uri(module, url, dest, user, password, body, method, dict_headers, redirects, socket_timeout, validate_certs)
File “/Users/mzb/.ansible/tmp/ansible-tmp-1443729077.78-98124067847188/uri”, line 312, in uri
resp, content = h.request(url, method=method, body=body, headers=headers)
File “/Library/Python/2.7/site-packages/httplib2/init.py”, line 1609, in request
(response, content) = self._request(conn, authority, uri, request_uri, method, body, headers, redirections, cachekey)
File “/Library/Python/2.7/site-packages/httplib2/init.py”, line 1351, in _request
(response, content) = self._conn_request(conn, request_uri, method, body, headers)
File “/Library/Python/2.7/site-packages/httplib2/init.py”, line 1273, in _conn_request
conn.request(method, request_uri, body, headers)
File “/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py”, line 973, in request
self._send_request(method, url, body, headers)
File “/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py”, line 1007, in _send_request
self.endheaders(body)
File “/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py”, line 969, in endheaders
self._send_output(message_body)
File “/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py”, line 833, in _send_output
self.send(message_body)
File “/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py”, line 805, in send
self.sock.sendall(data)
File “/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ssl.py”, line 229, in sendall
v = self.send(data[count:])
TypeError: unhashable type

If I don’t use quotes around the variable substition, like this:

vars:
my_var: hello_world

tasks:

  • uri:
    url: https://localhost/api/v1/
    method: POST
    body: ‘{ “name”: “test”, “var”: {{ my_var }}, “location”: “usa” }’
    HEADER_Content-Type: “application/json”
    status_code: 201
    validate_certs: no
    user: admin
    password: password

then, I get this error (No JSON type could be decoded):

failed: [localhost] => {“allow”: “GET, POST, HEAD, OPTIONS”, “connection”: “close”, “content”: “{"detail": "JSON parse error - No JSON object could be decoded"}”, “content_type”: “application/json”, “date”: “Thu, 01 Oct 2015 19:50:56 GMT”, “failed”: true, “json”: {“detail”: “JSON parse error - No JSON object could be decoded”}, “redirected”: false, “server”: “Apache/2.4.7 (Ubuntu)”, “status”: 400, “transfer_encoding”: “chunked”, “vary”: “Accept,Cookie”, “x_api_time”: “0.001s”}
msg: Status code was not [201]

Any ideas? Thanks in advance!

2

I solved the problem after a lot of digging. In case it’s of use to anyone else: https://github.com/ansible/ansible/issues/7005

3

HI, I am facing the same problem. I went through the link which you’ve posted but couldn’t find the exact solution. Could you please post the solution which you’ve tried?

4

Hi Sharwari,

This is the key fix, changing from colon syntax to equal sign syntax:

    - name: Create an instance
      ec2: >
        state=present
        image="{{ ami_base_image_id }}"
        instance_type=t1.micro
        group="{{ instance_security_groups }}"
        key_name="{{ environment_public_ssh_key_name }}"
        vpc_subnet_id="{{ environment_vpc_public_subnet_az1_id }}"
        user_data="{{ lookup('template', '../templates/user_data.json') }}"
        assign_public_ip=yes
        wait=yes
        wait_timeout=600
        region="{{ vpc_region }}"
        aws_access_key="{{ aws_access_key }}"
        aws_secret_key="{{ aws_secret_key }}"
      register: new_instance
      when: environment_instance is not defined
5

Hi,
I’d explain my problem clearly, I have a same type of example as yours.

vars:
my_var: hello_world

tasks:

  • uri:
    url: https://localhost/api/v1/
    method: POST
    body: jsoncode=‘{ “name”: “test”, “var”: “{{ my_var }}”, “location”: “usa” }’
    HEADER_Content-Type: “application/json”
    status_code: 201
    validate_certs: no
    user: admin
    password: password

Here, I replaced : with = and provided “” to the my_var variable. It’s not giving any error but when I redirect the output of the request to a file. It gives the following error message:

{
“error_code” : 220,
“module_name” : “common-services”,
“error_message” : "Could not read JSON: Unrecognized token ‘jsoncode’: was expecting ‘null’, ‘true’, ‘false’ or NaN\n at [Source: org.apache.catalina.connector.CoyoteInputStream@29d4dd6e; line: 1, column: 7]; nested exception is com.fasterxml.jackson.core.JsonParseException: Unrecognized token ‘jsoncode’: was expecting ‘null’, ‘true’, ‘false’ or NaN\n at [Source: org.apache.catalina.connector.CoyoteInputStream@29d4dd6e; line: 1, column: 7

Correct me if I am going wrong. Thanks in advance.