合并连接页（task/connections）

web/views/ConnectionsPage.vue

@@ -0,0 +1,431 @@
+<script setup lang="ts">
+/**
+ * 连接页：内核当前有哪些连接，从哪一路入站进来，能断开它们。
+ *
+ * /connections 没有流式版本，只能每秒全量轮询一次。表格数据来自内核快照，
+ * 显示层的问题（主机名怎么摆、出站链按什么方向、持续时间多长）都在 shared/connections.ts
+ * 里回答，这里只管取数、状态和断开动作。
+ */
+import { computed, onMounted, onUnmounted, ref } from 'vue'
+import { useVirtualizer } from '@tanstack/vue-virtual'
+import {
+  chainLabel,
+  filterConnections,
+  formatDuration,
+  groupByInbound,
+  hostLabel,
+  ruleLabel,
+  sortConnections,
+} from '@shared/connections.ts'
+import type { ConnectionSnapshot, SortKey } from '@shared/connections.ts'
+import { formatBytes } from '@shared/format.ts'
+import { ApiError, api } from '../api'
+import { kernel } from '../runtime'
+import ConfirmDialog from '../components/ConfirmDialog.vue'
+import IconClose from '~icons/ri/close-line'
+
+const snapshot = ref<ConnectionSnapshot | null>(null)
+const failure = ref('')
+/** 表格里的持续时间按这一刻算。跟着轮询节拍走，不单独开秒表 */
+const now = ref(Date.now())
+const query = ref('')
+const sort = ref<SortKey>('download')
+/** 正在断开中的连接 id，防止连点 */
+const closing = ref<string[]>([])
+const closingAll = ref(false)
+const askAll = ref(false)
+/** 有请求在飞就不再发，内核卡住时每秒叠一个请求只会让局面更糟 */
+let fetching = false
+let timer: number | undefined
+
+async function refresh() {
+  // 内核不在线时不打这个接口：得不到数据，界面直接说原因
+  if (!kernel.value.online || fetching) return
+  fetching = true
+  try {
+    snapshot.value = await api.connections()
+    now.value = Date.now()
+    failure.value = ''
+  } catch (error) {
+    failure.value = error instanceof ApiError ? error.message : String(error)
+  } finally {
+    fetching = false
+  }
+}
+
+onMounted(() => {
+  void refresh()
+  timer = window.setInterval(() => void refresh(), 1000)
+})
+
+onUnmounted(() => {
+  window.clearInterval(timer)
+})
+
+const all = computed(() => snapshot.value?.connections ?? [])
+const rows = computed(() =>
+  sortConnections(filterConnections(all.value, query.value), sort.value, now.value),
+)
+const uses = computed(() => groupByInbound(all.value))
+
+/* 行高写死，estimateSize 必须和它一致，否则滚动位置算不准 */
+const ROW_HEIGHT = 48
+
+const scrollEl = ref<HTMLElement | null>(null)
+const virtualizer = useVirtualizer(
+  computed(() => ({
+    count: rows.value.length,
+    getScrollElement: () => scrollEl.value,
+    estimateSize: () => ROW_HEIGHT,
+    overscan: 8,
+  })),
+)
+const virtualRows = computed(() => virtualizer.value.getVirtualItems())
+const totalSize = computed(() => virtualizer.value.getTotalSize())
+
+async function closeOne(id: string) {
+  if (closing.value.includes(id) || closingAll.value) return
+  closing.value = [...closing.value, id]
+  failure.value = ''
+  try {
+    await api.closeConnection(id)
+    await refresh()
+  } catch (error) {
+    failure.value = error instanceof ApiError ? error.message : String(error)
+  } finally {
+    closing.value = closing.value.filter((item) => item !== id)
+  }
+}
+
+async function closeAllConfirmed() {
+  askAll.value = false
+  if (closingAll.value) return
+  closingAll.value = true
+  failure.value = ''
+  try {
+    await api.closeAllConnections()
+    await refresh()
+  } catch (error) {
+    failure.value = error instanceof ApiError ? error.message : String(error)
+  } finally {
+    closingAll.value = false
+  }
+}
+</script>
+
+<template>
+  <div class="page">
+    <header class="head">
+      <div class="sums">
+        <div class="sum">
+          <span class="sum-n">{{ all.length }}</span>
+          <span class="sum-k">连接</span>
+        </div>
+        <div class="sum">
+          <span class="sum-n">{{ formatBytes(snapshot?.uploadTotal ?? 0) }}</span>
+          <span class="sum-k">上传总量</span>
+        </div>
+        <div class="sum">
+          <span class="sum-n">{{ formatBytes(snapshot?.downloadTotal ?? 0) }}</span>
+          <span class="sum-k">下载总量</span>
+        </div>
+      </div>
+
+      <div class="tools">
+        <input v-model="query" type="search" class="search" placeholder="按主机筛选" />
+        <button
+          type="button"
+          class="close-all"
+          :disabled="all.length === 0 || closingAll"
+          @click="askAll = true"
+        >
+          全部断开
+        </button>
+      </div>
+    </header>
+
+    <div v-if="failure" class="failure">
+      <strong>{{ failure }}</strong>
+    </div>
+
+    <p v-if="!kernel.online" class="note">内核未连接，看不到当前有哪些连接。</p>
+    <p v-else-if="!snapshot" class="note">读取中</p>
+    <p v-else-if="all.length === 0" class="note">当前没有连接。</p>
+
+    <template v-else>
+      <!-- 这个项目特有的视角：每一路入站（每个容器）现在有多少条连接 -->
+      <div class="uses">
+        <span v-for="use in uses" :key="use.label" class="use">
+          {{ use.label }}
+          <strong>{{ use.count }}</strong> 条
+        </span>
+      </div>
+
+      <p v-if="rows.length === 0" class="note">没有主机匹配「{{ query.trim() }}」。</p>
+
+      <div v-else class="table">
+        <div class="rowgrid thead">
+          <span>主机</span>
+          <span>规则</span>
+          <span>出站链</span>
+          <span class="num">上传</span>
+          <button
+            type="button"
+            :class="['th num', sort === 'download' && 'is-on']"
+            @click="sort = 'download'"
+          >
+            下载{{ sort === 'download' ? ' ↓' : '' }}
+          </button>
+          <button
+            type="button"
+            :class="['th num', sort === 'duration' && 'is-on']"
+            @click="sort = 'duration'"
+          >
+            持续时间{{ sort === 'duration' ? ' ↓' : '' }}
+          </button>
+          <span>入站</span>
+          <span></span>
+        </div>
+
+        <div ref="scrollEl" class="scroller">
+          <div class="spacer" :style="{ height: `${totalSize}px` }">
+            <div
+              v-for="vRow in virtualRows"
+              :key="rows[vRow.index]?.id ?? vRow.index"
+              class="rowgrid row"
+              :style="{ transform: `translateY(${vRow.start}px)` }"
+            >
+              <template v-if="rows[vRow.index]">
+                <span class="cell mono" :title="hostLabel(rows[vRow.index]!.metadata)">
+                  {{ hostLabel(rows[vRow.index]!.metadata) }}
+                </span>
+                <span class="cell mono">{{ ruleLabel(rows[vRow.index]!.rule, rows[vRow.index]!.rulePayload) }}</span>
+                <span class="cell mono" :title="chainLabel(rows[vRow.index]!.chains)">
+                  {{ chainLabel(rows[vRow.index]!.chains) }}
+                </span>
+                <span class="cell num mono">{{ formatBytes(rows[vRow.index]!.upload) }}</span>
+                <span class="cell num mono">{{ formatBytes(rows[vRow.index]!.download) }}</span>
+                <span class="cell num mono">{{ formatDuration(rows[vRow.index]!.start, now) }}</span>
+                <span class="cell mono">{{ rows[vRow.index]!.metadata.inboundName }}</span>
+                <button
+                  type="button"
+                  class="drop"
+                  title="断开这条连接"
+                  :disabled="closing.includes(rows[vRow.index]!.id) || closingAll"
+                  @click="closeOne(rows[vRow.index]!.id)"
+                >
+                  <IconClose />
+                </button>
+              </template>
+            </div>
+          </div>
+        </div>
+      </div>
+    </template>
+
+    <ConfirmDialog
+      :open="askAll"
+      :message="`断开全部 ${String(all.length)} 条连接？正在进行的传输会中断。`"
+      action="全部断开"
+      @close="askAll = false"
+      @confirm="closeAllConfirmed"
+    />
+  </div>
+</template>
+
+<style scoped>
+.head {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: var(--s-4);
+  margin-bottom: var(--s-5);
+}
+
+.sums {
+  display: flex;
+  gap: var(--s-6);
+}
+
+.sum {
+  display: flex;
+  align-items: baseline;
+  gap: var(--s-2);
+}
+
+.sum-n {
+  font-size: var(--t-xl);
+  font-weight: 600;
+  font-variant-numeric: tabular-nums;
+  letter-spacing: -0.02em;
+}
+
+.sum-k {
+  color: var(--c-text-soft);
+  font-size: var(--t-sm);
+}
+
+.tools {
+  display: flex;
+  align-items: center;
+  gap: var(--s-2);
+}
+
+.search {
+  width: 200px;
+  padding: var(--s-2) var(--s-3);
+  border: 1px solid var(--c-border-strong);
+  border-radius: var(--r-sm);
+  background: var(--c-surface);
+}
+
+.close-all {
+  padding: var(--s-2) var(--s-3);
+  border: 1px solid var(--c-border-strong);
+  border-radius: var(--r-sm);
+  background: var(--c-surface);
+  cursor: pointer;
+  white-space: nowrap;
+}
+.close-all:hover:not(:disabled) {
+  border-color: var(--c-danger);
+  color: var(--c-danger);
+}
+.close-all:disabled {
+  color: var(--c-text-faint);
+  cursor: not-allowed;
+}
+
+.failure {
+  border: 1px solid color-mix(in srgb, var(--c-danger) 35%, var(--c-border));
+  border-radius: var(--r-md);
+  background: var(--c-danger-soft);
+  padding: var(--s-3) var(--s-4);
+  margin-bottom: var(--s-4);
+  font-size: var(--t-sm);
+}
+
+.note {
+  color: var(--c-text-faint);
+  font-size: var(--t-sm);
+}
+
+.uses {
+  display: flex;
+  flex-wrap: wrap;
+  gap: var(--s-2);
+  margin-bottom: var(--s-4);
+}
+
+.use {
+  padding: var(--s-1) var(--s-3);
+  border: 1px solid var(--c-border);
+  border-radius: 999px;
+  background: var(--c-surface);
+  font-size: var(--t-sm);
+  color: var(--c-text-soft);
+}
+
+.use strong {
+  color: var(--c-text);
+  font-variant-numeric: tabular-nums;
+}
+
+/* 窄屏不挤变形，横向滚动 */
+.table {
+  border: 1px solid var(--c-border);
+  border-radius: var(--r-md);
+  background: var(--c-surface);
+  overflow-x: auto;
+}
+
+.rowgrid {
+  display: grid;
+  grid-template-columns:
+    minmax(160px, 1.5fr) minmax(120px, 1fr) minmax(160px, 1.5fr)
+    5rem 5rem 6.5rem minmax(90px, 0.8fr) 2rem;
+  align-items: center;
+  gap: var(--s-3);
+  min-width: 880px;
+  padding: 0 var(--s-4);
+}
+
+.thead {
+  height: 40px;
+  border-bottom: 1px solid var(--c-border);
+  color: var(--c-text-faint);
+  font-size: var(--t-xs);
+}
+
+/* 可排序的列表头。用按钮但视觉上仍是表头文字，排序中的那列才显色 */
+.th {
+  padding: 0;
+  border: none;
+  background: none;
+  color: inherit;
+  font-size: inherit;
+  cursor: pointer;
+  text-align: right;
+}
+.th:hover {
+  color: var(--c-text);
+}
+.th.is-on {
+  color: var(--c-text);
+  font-weight: 600;
+}
+
+.scroller {
+  overflow-y: auto;
+  /* 表格最长不顶满一屏：留出头部和汇总条的位置，连接少时随内容缩短 */
+  max-height: calc(100vh - 20rem);
+}
+
+.spacer {
+  position: relative;
+}
+
+.row {
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 48px;
+  border-bottom: 1px solid var(--c-border);
+  font-size: var(--t-sm);
+}
+
+.cell {
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.num {
+  text-align: right;
+  font-variant-numeric: tabular-nums;
+}
+
+.drop {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 26px;
+  height: 26px;
+  padding: 0;
+  border: none;
+  border-radius: var(--r-sm);
+  background: none;
+  color: var(--c-text-faint);
+  cursor: pointer;
+}
+.drop:hover:not(:disabled) {
+  background: var(--c-danger-soft);
+  color: var(--c-danger);
+}
+.drop:disabled {
+  opacity: 0.4;
+  cursor: not-allowed;
+}
+</style>