fix: support ipv6

[NguyenHoangSon96]

Closes #

Proposed Changes

• Add tests for IPv6, I only check if our clients can parse the addresses correctly. Real communication tests need to be created inside a machine executor in CircleCI, and It is not worth the efforts, already talked with Jakub about this.
• Arrow Flight Python does not support IPv6 with Zone Ids so we only support IPv6 without zone ids.

Checklist

• CHANGELOG.md updated
• Rebased/mergeable
• A test has been added if appropriate
• Tests pass
• Commit messages are conventional
• Sign CLA (if not already signed)

[Copilot]

Pull request overview

Adds IPv6 URL support to InfluxDBClient3 host parsing so that generated REST base_url and gRPC connection_string preserve IPv6 bracket formatting, with accompanying unit tests to validate behavior.

Changes:

• Update host parsing to re-wrap IPv6 hostnames in [] when the input URL netloc indicates an IPv6 literal.
• Add tests covering URL parsing for IPv4/hostname and IPv6 (including ports, paths, and queries).
• Add tests asserting the gRPC connection string generated for IPv6 hosts.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
influxdb_client_3/__init__.py	Adjusts host parsing to preserve IPv6 bracket formatting when constructing base_url / gRPC connection strings.
tests/test_influxdb_client_3.py	Adds unit tests validating parsed base_url and gRPC connection strings for IPv6 hosts.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.90%. Comparing base (c5c8b6a) to head (a2f786b).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #234      +/-   ##
==========================================
+ Coverage   86.88%   86.90%   +0.01%     
==========================================
  Files          28       28              
  Lines        2082     2084       +2     
==========================================
+ Hits         1809     1811       +2     
  Misses        273      273              

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated no new comments.

Suppressed comments (2)

influxdb_client_3/init.py:311

• The docstring now states IPv6 Zone IDs are not supported, but the constructor currently accepts hosts containing a zone id (e.g. http://[fe80::1%25eth0]:8086) and will pass the percent-encoded value through into base_url/gRPC connection strings. This is likely to fail later in Arrow Flight with a hard-to-diagnose error; consider rejecting zone IDs early with a clear ValueError to match the documented contract.

        # Parse the host input
        parsed_url = urllib.parse.urlparse(host)
        hostname = parsed_url.hostname if parsed_url.hostname else host
        if "[" in parsed_url.netloc and "]" in parsed_url.netloc:
            hostname = f"[{hostname}]"

tests/test_influxdb_client_3.py:84

• Tests cover bracket-wrapped IPv6 literals, but there is no assertion that IPv6 Zone IDs are rejected even though the PR description and docstrings state they are unsupported. Adding a zone-id case here would prevent accidental regression where a zone id silently flows into the gRPC connection string and fails later in Arrow Flight.

    def test_parse_addresses(self):
        tests = [
            {"url": "http://192.168.0.5/db", "expect": "http://192.168.0.5:443"},
            {"url": "http://192.168.0.1:80", "expect": "http://192.168.0.1:80"},
            {"url": "https://[2001:db8::1]", "expect": "https://[2001:db8::1]:443"},
            {"url": "https://[2001:db8::1]:8086/influx", "expect": "https://[2001:db8::1]:8086"},
            {"url": "http://[2001:db8::1]:15000?token=my-token", "expect": "http://[2001:db8::1]:15000"},
            {"url": "http://[2001:db8::1]", "expect": "http://[2001:db8::1]:443"},
            {"url": "http://[2001:db8:a0b:12f0::1]:80", "expect": "http://[2001:db8:a0b:12f0::1]:80"},
            {"url": "http://example.com", "expect": "http://example.com:443"},
            {"url": "http://example.com:3000", "expect": "http://example.com:3000"},
        ]
        for test in tests:
            client = InfluxDBClient3(
                host=test["url"],
                org="my_org",
                database="my_db",
                token="my_token",
            )
            self.assertEqual(client.base_url, test["expect"])