* fix(weed/shell): suppress prompt when stdin or stdout is not a TTY
When piping weed shell output (e.g. `echo "s3.user.list" | weed shell | jq`),
the "> " prompt was written to stdout, breaking JSON parsers.
`liner.TerminalSupported()` only checks platform support, not whether
stdin/stdout are actual TTYs. Add explicit checks using `term.IsTerminal()`
so the shell falls back to the non-interactive scanner path when piped.
Fixes#8962
* fix(weed/shell): suppress informational logs unless -verbose is set
Suppress glog info messages and connection status logs on stderr by
default. Add -verbose flag to opt in to the previous noisy behavior.
This keeps piped output clean (e.g. `echo "s3.user.list" | weed shell | jq`).
* fix(weed/shell): defer liner init until after TTY check
Move liner.NewLiner() and related setup (history, completion, interrupt
handler) inside the interactive block so the terminal is not put into
raw mode when stdout is redirected. Previously, liner would set raw mode
unconditionally at startup, leaving the terminal broken when falling
back to the scanner path.
Addresses review feedback from gemini-code-assist.
* refactor(weed/shell): consolidate verbose logging into single block
Group all verbose stderr output within one conditional block instead of
scattering three separate if-verbose checks around the filer logic.
Addresses review feedback from gemini-code-assist.
* fix(weed/shell): clean up global liner state and suppress logtostderr
- Set line=nil after Close() to prevent stale state if RunShell is
called again (e.g. in tests)
- Add nil check in OnInterrupt handler for non-interactive sessions
- Also set logtostderr=false when not verbose, in case it was enabled
Addresses review feedback from gemini-code-assist.
* refactor(weed/shell): make liner state local to eliminate data race
Replace the package-level `line` variable with a local variable in
RunShell, passing it explicitly to setCompletionHandler, loadHistory,
and saveHistory. This eliminates a data race between the OnInterrupt
goroutine and the defer that previously set the global to nil.
Addresses review feedback from gemini-code-assist.
* rename(weed/shell): rename -verbose flag to -debug
Avoid conflict with -verbose flags already used by individual shell
commands (e.g. ec.encode, volume.fix.replication, volume.check.disk).
* shell: s3.* commands output JSON, connection messages to stderr
All s3.user.* and s3.policy.attach|detach commands now output structured
JSON to stdout instead of human-readable text:
- s3.user.create: {"name","access_key"} (secret key to stderr only)
- s3.user.list: [{name,status,policies,keys}]
- s3.user.show: {name,status,source,account,policies,credentials,...}
- s3.user.delete: {"name"}
- s3.user.enable/disable: {"name","status"}
- s3.policy.attach/detach: {"policy","user"}
Connection startup messages (master/filer) moved to stderr so they
don't pollute structured output when piping.
Closes#8962 (partial — covers merged s3.user/policy commands).
* shell: fix secret leak, duplicate JSON output, and non-interactive prompt
- s3.user.create: only echo secret key to stderr when auto-generated,
never echo caller-supplied secrets
- s3.user.enable/disable: fix duplicate JSON output — remove inner
write in early-return path, keep single write site after gRPC call
- shell_liner: use bufio.Scanner when stdin is not a terminal instead
of liner.Prompt, suppressing the "> " prompt in piped mode
* shell: check scanner error, idempotent enable output, history errors to stderr
- Check scanner.Err() after non-interactive input loop to surface read errors
- s3.user.enable: always emit JSON regardless of current state (idempotent)
- saveHistory: write error messages to stderr instead of stdout
