Cannot open trace file with either firefox profiler or chrome

[flodabo]

Actual Behavior

Chrome:

Cannot open file. Error Message:

Firefox Profiler

Cannot open file. Error Message:

Perfetto UI

Trace is shown correctly:

Expected Behavior

trace files can be open opened by all viewers that are mentioned in the readme, not just perfetto UI.

Versions

• ansible: ansible 4.6.0 ansible-core 2.11.6
• ansible-trace: main commit 8f92702
• python: Python 3.9.2

simple playbook used for testing

---
- hosts: localhost
  gather_facts: true
  tasks:
    - name: "output if not debian 11"
      debug:
        msg: "test"
      when: 'not (ansible_distribution == "Debian" and ansible_distribution_major_version == "11")'

    - name: "output if debian 11"
      debug:
        msg: "test"
      when: (ansible_distribution == "Debian" and ansible_distribution_major_version == "11")

output of trace callback for test playbook

trace.json

[
{
  "args": {
    "name": "localhost"
  },
  "cat": "process",
  "name": "process_name",
  "ph": "M",
  "pid": 1
}[
{
  "args": {
    "args": null,
    "host": "localhost",
    "path": "/home/user/repos/ansible-test/testenv-test.yml:2",
    "task": "Gathering Facts"
  },
  "cat": "runner",
  "id": 6508616308570991776,
  "name": "Gathering Facts",
  "ph": "B",
  "pid": 1,
  "ts": 1634299695390039.8
}[
{
  "args": {
    "status": "ok"
  },
  "cat": "runner",
  "id": 6508616308570991776,
  "name": "Gathering Facts",
  "ph": "E",
  "pid": 1,
  "ts": 1634299696186142.0
}[
{
  "args": {
    "args": null,
    "host": "localhost",
    "path": "/home/user/repos/ansible-test/testenv-test.yml:5",
    "task": "output if not debian 11"
  },
  "cat": "runner",
  "id": 746051916975514963,
  "name": "output if not debian 11",
  "ph": "B",
  "pid": 1,
  "ts": 1634299696197881.8
}[
{
  "args": {
    "status": "skipped"
  },
  "cat": "runner",
  "id": 746051916975514963,
  "name": "output if not debian 11",
  "ph": "E",
  "pid": 1,
  "ts": 1634299696210522.0
}[
{
  "args": {
    "args": null,
    "host": "localhost",
    "path": "/home/user/repos/ansible-test/testenv-test.yml:10",
    "task": "output if debian 11"
  },
  "cat": "runner",
  "id": 1296121251497600435,
  "name": "output if debian 11",
  "ph": "B",
  "pid": 1,
  "ts": 1634299696215914.5
}[
{
  "args": {
    "status": "ok"
  },
  "cat": "runner",
  "id": 1296121251497600435,
  "name": "output if debian 11",
  "ph": "E",
  "pid": 1,
  "ts": 1634299696230237.2
}
]

modified trace file that i could open with perfettoUI, chrome and firefox profiler

[
{
  "args": {
    "name": "localhost"
  },
  "cat": "process",
  "name": "process_name",
  "ph": "M",
  "pid": 1
},
{
  "args": {
    "args": null,
    "host": "localhost",
    "path": "/home/user/repos/ansible-test/testenv-test.yml:2",
    "task": "Gathering Facts"
  },
  "cat": "runner",
  "id": 6508616308570991776,
  "name": "Gathering Facts",
  "ph": "B",
  "pid": 1,
  "ts": 1634299695390039.8
},
{
  "args": {
    "status": "ok"
  },
  "cat": "runner",
  "id": 6508616308570991776,
  "name": "Gathering Facts",
  "ph": "E",
  "pid": 1,
  "ts": 1634299696186142.0
},
{
  "args": {
    "args": null,
    "host": "localhost",
    "path": "/home/user/repos/ansible-test/testenv-test.yml:5",
    "task": "output if not debian 11"
  },
  "cat": "runner",
  "id": 746051916975514963,
  "name": "output if not debian 11",
  "ph": "B",
  "pid": 1,
  "ts": 1634299696197881.8
},
{
  "args": {
    "status": "skipped"
  },
  "cat": "runner",
  "id": 746051916975514963,
  "name": "output if not debian 11",
  "ph": "E",
  "pid": 1,
  "ts": 1634299696210522.0
},
{
  "args": {
    "args": null,
    "host": "localhost",
    "path": "/home/user/repos/ansible-test/testenv-test.yml:10",
    "task": "output if debian 11"
  },
  "cat": "runner",
  "id": 1296121251497600435,
  "name": "output if debian 11",
  "ph": "B",
  "pid": 1,
  "ts": 1634299696215914.5
},
{
  "args": {
    "status": "ok"
  },
  "cat": "runner",
  "id": 1296121251497600435,
  "name": "output if debian 11",
  "ph": "E",
  "pid": 1,
  "ts": 1634299696230237.2
}
]

[mhansen]

Thank you for this detailed report! Looks like I've fat-fingered something and added an extra [

[mhansen]

It's honestly amazing that Perfetto can open this at all given how badly I screwed up. Wow