t8y2/dbx · error

invalid TDengine password

Error message

invalid TDengine password

What it means

In build_from_fields, the password is set with Url::set_password after the username. A failure there is surfaced as 'invalid TDengine password'. set_password fails only when the resulting URL is structurally invalid (e.g. a ':' inside the password, which breaks userinfo parsing), since most characters are percent-encoded automatically.

Source

Thrown at agents/drivers/tdengine/src/config.rs:60

        .map(|segment| percent_decode_str(segment).decode_utf8_lossy().into_owned())
        .unwrap_or_default();
    Ok(BuiltDsn { value: url.into(), database })
}

fn build_from_fields(params: &ConnectParams) -> Result<Url> {
    let scheme = if params.ssl { "wss" } else { "ws" };
    let host = if params.host.trim().is_empty() { DEFAULT_HOST } else { params.host.trim() };
    let port = if params.port == 0 { DEFAULT_PORT } else { params.port };
    let username = if params.username.is_empty() { DEFAULT_USER } else { &params.username };
    let password = if params.password.is_empty() { DEFAULT_PASSWORD } else { &params.password };
    let mut url = Url::parse(&format!("{scheme}://{DEFAULT_HOST}:{port}/"))?;
    if let Ok(address) = host.parse::<IpAddr>() {
        url.set_ip_host(address).map_err(|_| anyhow::anyhow!("invalid TDengine host"))?;
    } else {
        url.set_host(Some(host)).map_err(|_| anyhow::anyhow!("invalid TDengine host"))?;
    }
    url.set_username(username).map_err(|_| anyhow::anyhow!("invalid TDengine username"))?;
    url.set_password(Some(password)).map_err(|_| anyhow::anyhow!("invalid TDengine password"))?;
    if !params.database.trim().is_empty() {
        url.set_path(&format!("/{}", params.database.trim()));
    }
    Ok(url)
}

fn apply_connection_fields(url: &mut Url, params: &ConnectParams) -> Result<()> {
    if url.username().is_empty() {
        let username = if params.username.is_empty() { DEFAULT_USER } else { &params.username };
        url.set_username(username).map_err(|_| anyhow::anyhow!("invalid TDengine username"))?;
    }
    if url.password().is_none() {
        let password = if params.password.is_empty() { DEFAULT_PASSWORD } else { &params.password };
        url.set_password(Some(password)).map_err(|_| anyhow::anyhow!("invalid TDengine password"))?;
    }
    if url.path().trim_matches('/').is_empty() && !params.database.trim().is_empty() {
        url.set_path(&format!("/{}", params.database.trim()));
    }

View on GitHub (pinned to c0390bff16)

Solutions

1. Remove any ':' or control characters from the password, or ensure the value is a valid single secret string.
2. Verify username and password fields are not swapped in the config.
3. Trim whitespace/newlines from the password before constructing ConnectParams.

Example fix

// before
password: "taos:data".into() // embedded ':' breaks userinfo
// after
password: "taosdata".into()

// Rust
fn is_valid_password(p: &str) -> bool {
    !p.contains(':') && p.chars().all(|c| !c.is_control())
}

When it happens

Trigger: Calling build_dsn with a ConnectParams.password containing characters that cannot form valid userinfo — chiefly an embedded ':' or control characters.

Common situations: Passwords copied from documentation that include a separator character, secrets manager values with embedded newlines, or password/username fields swapped so a username with ':' lands in the password slot.

Related errors

• invalid TDengine username
• invalid TDengine HTTP connection string
• Kerberos requires SSPI, credential cache, keytab, or princip
• ZooKeeper authentication failed
• Hive connection string must start with jdbc:hive2:// or hive

AI-assisted analysis of t8y2/dbx@c0390bff16 (2026-09-05). Data as JSON: /api/errors/66e7d2a6d605b648. Report an issue: GitHub.