DB & Dev Tools · Databases: connections, schemas, queries, structure, Redis
A new chapter, src/devtools. ConnectionManager lists saved connections with their engine and address, or why one failed, and connects on Enter; ConnectionForm fills a connection with a port checked from 1 to 65535, tests it and saves it. SchemaTree shows schemas, tables, views and fields with keys marked; ERDiagram draws tables and their foreign keys on NodeGraph, whose fixed wires show only the sockets that hold one. QueryHistory finds past runs and runs one again; QueryPlanViewer shows each step's share of the cost. TableStructureEditor edits fields in place; IndexManager lists and draws up indexes; RedisKeyBrowser finds keys by glob and lays out each type. QueryEditor is editor::CodeEditor, whose lexer now knows SQL's words, and QueryResultGrid is tables::DataGrid. lists::row_action keeps a row's button its own.
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use std::rc::Rc;
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use gpui::{
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App, ElementId, Entity, FontWeight, IntoElement, ParentElement, RenderOnce, SharedString,
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Styled, Window, div,
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};
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use crate::{
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data_display::{Badge, Tone},
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feedback::EmptyState,
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forms::{Input, TextInput},
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lists::{ListItem, SelectableList},
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primitives::{Icon, IconName},
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tables::Table,
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theme::{ActiveTheme, IconSize, TextSize},
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typography::{Ellipsis, format},
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};
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/// What a Redis key holds.
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#[derive(Clone, Debug, PartialEq)]
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pub enum RedisValue {
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Text(SharedString),
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Hash(Vec<(SharedString, SharedString)>),
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List(Vec<SharedString>),
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Set(Vec<SharedString>),
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Sorted(Vec<(SharedString, f64)>),
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}
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impl RedisValue {
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/// The type's name as Redis gives it.
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pub fn kind(&self) -> &'static str {
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match self {
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RedisValue::Text(_) => "string",
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RedisValue::Hash(_) => "hash",
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RedisValue::List(_) => "list",
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RedisValue::Set(_) => "set",
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RedisValue::Sorted(_) => "zset",
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}
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}
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fn tone(&self) -> Tone {
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match self {
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RedisValue::Text(_) => Tone::Neutral,
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RedisValue::Hash(_) => Tone::Accent,
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RedisValue::List(_) => Tone::Info,
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RedisValue::Set(_) => Tone::Success,
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RedisValue::Sorted(_) => Tone::Warning,
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}
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}
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}
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/// A key, what it holds, and the seconds it has left, or none when it keeps.
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#[derive(Clone, Debug, PartialEq)]
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pub struct RedisKey {
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pub key: SharedString,
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pub value: RedisValue,
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pub ttl: Option<u64>,
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}
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/// Whether `key` matches a Redis glob: `*` for any run, `?` for one character.
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pub(crate) fn matches(pattern: &str, key: &str) -> bool {
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fn go(pattern: &[char], key: &[char]) -> bool {
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match (pattern.first(), key.first()) {
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(None, None) => true,
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(Some('*'), _) => go(&pattern[1..], key) || (!key.is_empty() && go(pattern, &key[1..])),
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(Some('?'), Some(_)) => go(&pattern[1..], &key[1..]),
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(Some(p), Some(k)) if p == k => go(&pattern[1..], &key[1..]),
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_ => false,
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}
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}
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let (pattern, key): (Vec<char>, Vec<char>) = (pattern.chars().collect(), key.chars().collect());
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go(&pattern, &key)
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}
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type OnKey = Rc<dyn Fn(&SharedString, &mut Window, &mut App)>;
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/// Keys found by a glob, each with its type and time left; the one selected shows its value laid out for its type: text, a hash's fields, a list's items by index, a set's members, a sorted set's members by score.
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#[derive(IntoElement)]
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pub struct RedisKeyBrowser {
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id: ElementId,
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keys: Vec<RedisKey>,
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pattern: Entity<TextInput>,
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selected: Option<SharedString>,
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on_select: Option<OnKey>,
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}
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impl RedisKeyBrowser {
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/// `pattern` is the glob field's text, which the owner keeps; empty finds every key.
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pub fn new(
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id: impl Into<ElementId>,
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keys: impl IntoIterator<Item = RedisKey>,
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pattern: &Entity<TextInput>,
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) -> Self {
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Self {
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id: id.into(),
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keys: keys.into_iter().collect(),
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pattern: pattern.clone(),
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selected: None,
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on_select: None,
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}
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}
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pub fn selected(mut self, key: Option<impl Into<SharedString>>) -> Self {
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self.selected = key.map(Into::into);
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self
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}
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pub fn on_select(
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mut self,
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handler: impl Fn(&SharedString, &mut Window, &mut App) + 'static,
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) -> Self {
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self.on_select = Some(Rc::new(handler));
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self
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}
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}
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fn value(key: &RedisKey, cx: &App) -> gpui::AnyElement {
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let theme = cx.theme();
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let text = |words: &SharedString| words.clone();
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match &key.value {
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RedisValue::Text(words) => div()
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.p_3()
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.rounded(theme.radius(crate::theme::Radius::Md))
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.bg(theme.colors.sunken)
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.font_family(theme.mono_family.clone())
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.text_size(theme.text_size(TextSize::Sm))
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.child(words.clone())
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.into_any_element(),
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RedisValue::Hash(fields) => fields
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.iter()
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.fold(Table::new(["Field", "Value"]), |table, (field, value)| {
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table.row([text(field), text(value)])
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})
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.into_any_element(),
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RedisValue::List(items) => items
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.iter()
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.enumerate()
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.fold(Table::new(["Index", "Item"]), |table, (ix, item)| {
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table.row([SharedString::from(ix.to_string()), text(item)])
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})
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.into_any_element(),
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RedisValue::Set(members) => members
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.iter()
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.fold(Table::new(["Member"]), |table, member| {
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table.row([text(member)])
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})
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.into_any_element(),
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RedisValue::Sorted(members) => members
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.iter()
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.fold(Table::new(["Member", "Score"]), |table, (member, score)| {
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table.row([
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text(member),
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SharedString::from(format::number(*score, 2, format::Separators::EN)),
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])
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})
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.into_any_element(),
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}
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}
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impl RenderOnce for RedisKeyBrowser {
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fn render(self, _: &mut Window, cx: &mut App) -> impl IntoElement {
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let id = self.id;
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let pattern = self.pattern.read(cx).text().trim().to_string();
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let glob = if pattern.is_empty() {
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"*".to_string()
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} else {
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pattern
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};
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let found: Vec<&RedisKey> = self
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.keys
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.iter()
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.filter(|key| matches(&glob, &key.key))
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.collect();
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let theme = cx.theme();
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let muted = theme.colors.fg_muted;
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let list = found.iter().fold(
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SelectableList::new((id.clone(), "keys")).selected(self.selected.clone()),
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|list, key| {
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let ttl = key.ttl.map_or("No expiry".to_string(), |seconds| {
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format!(
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"{} left",
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format::duration(seconds, format::DurationStyle::Compact)
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)
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});
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list.row(
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key.key.clone(),
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ListItem::new((id.clone(), format!("key-{}", key.key)), key.key.clone())
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.description(ttl)
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.leading(Icon::new(IconName::Key).size(IconSize::Sm).color(muted))
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.trailing(Badge::new(key.value.kind()).tone(key.value.tone())),
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)
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},
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);
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let on_select = self.on_select;
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let list = list.on_change(move |keys, window, cx| {
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if let (Some(key), Some(on_select)) = (keys.first(), &on_select) {
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on_select(key, window, cx);
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}
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});
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let shown = self
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.selected
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.as_ref()
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.and_then(|selected| self.keys.iter().find(|key| key.key == *selected));
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let detail = match shown {
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Some(key) => div()
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.flex()
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.flex_col()
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.gap_3()
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.child(
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div()
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.flex()
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.items_center()
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.gap_2()
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.child(
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div()
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.flex_1()
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.min_w_0()
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.font_weight(FontWeight::SEMIBOLD)
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.child(Ellipsis::new(key.key.clone())),
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)
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.child(
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div()
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.flex_none()
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.child(Badge::new(key.value.kind()).tone(key.value.tone())),
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),
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)
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.child(value(key, cx))
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.into_any_element(),
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None => EmptyState::new((id.clone(), "none"), IconName::Key, "No key selected")
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.body("Pick a key to see what it holds.")
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.into_any_element(),
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};
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div()
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.flex()
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.flex_wrap()
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.gap_4()
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.child(
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div()
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.flex_1()
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.min_w(theme.label_width() * 2.)
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.flex()
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.flex_col()
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.gap_2()
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.child(
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Input::new(&self.pattern)
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.prefix(Icon::new(IconName::Search).size(IconSize::Sm)),
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)
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.child(format!("{} of {} keys", found.len(), self.keys.len()))
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.child(list),
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)
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.child(div().flex_1().min_w(theme.label_width() * 2.).child(detail))
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}
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}
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#[cfg(test)]
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mod tests {
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use super::matches;
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#[test]
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fn globs_match_runs_and_single_characters() {
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assert!(matches("user:*", "user:42"));
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assert!(matches("user:*:name", "user:42:name"));
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assert!(!matches("user:*:name", "user:42:mail"));
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assert!(matches("h?llo", "hello"));
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assert!(!matches("h?llo", "hllo"));
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assert!(matches("*", ""));
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}
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}
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