skywalking-booster-ui/src/views/dashboard/related/trace/components/Graph.vue

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contributor license agreements.  See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
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(the "License"); you may not use this file except in compliance with
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  http://www.apache.org/licenses/LICENSE-2.0
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distributed under the License is distributed on an "AS IS" BASIS,
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See the License for the specific language governing permissions and
limitations under the License. -->
<template>
  <div class="trace-t-loading" v-show="loading">
    <Icon iconName="spinner" size="sm" />
  </div>
  <div ref="traceGraph"></div>
</template>
<script lang="ts" setup>
import { ref, watch, onBeforeUnmount, onMounted } from "vue";
import type { PropType } from "vue";
import _ from "lodash";
import * as d3 from "d3";
import ListGraph from "../utils/d3-trace-list";
import TreeGraph from "../utils/d3-trace-tree";
import { Span } from "@/types/trace";

/* global defineProps, Nullable*/
const props = defineProps({
  data: { type: Array as PropType<Span[]>, default: () => [] },
  traceId: { type: String, default: "" },
  type: { type: String, default: "List" },
});
const loading = ref<boolean>(false);
const showDetail = ref<boolean>(false);
const fixSpansSize = ref<number>(0);
const segmentId = ref<any>([]);
const currentSpan = ref<Array<Span>>([]);
const tree = ref<any>(null);
const traceGraph = ref<Nullable<HTMLDivElement>>(null);

onMounted(() => {
  loading.value = true;
  changeTree();
  if (!traceGraph.value) {
    loading.value = false;
    return;
  }
  if (props.type === "List") {
    tree.value = new ListGraph(traceGraph.value, handleSelectSpan);
    tree.value.init(
      { label: "TRACE_ROOT", children: segmentId.value },
      props.data,
      fixSpansSize.value
    );
    tree.value.draw();
  } else {
    tree.value = new TreeGraph(traceGraph.value, handleSelectSpan);
    tree.value.init(
      { label: `${props.traceId}`, children: segmentId.value },
      props.data
    );
  }
  loading.value = false;
});
function handleSelectSpan(i: any) {
  currentSpan.value = i.data;
  showDetail.value = true;
}
function traverseTree(node: any, spanId: string, segmentId: string, data: any) {
  if (!node || node.isBroken) {
    return;
  }
  if (node.spanId === spanId && node.segmentId === segmentId) {
    node.children.push(data);
    return;
  }
  if (node.children && node.children.length > 0) {
    node.children.forEach((nodeItem: any) => {
      traverseTree(nodeItem, spanId, segmentId, data);
    });
  }
}
function changeTree() {
  if (props.data.length === 0) {
    return [];
  }
  segmentId.value = [];
  const segmentGroup: any = {};
  const segmentIdGroup: any = [];
  const fixSpans: any[] = [];
  const segmentHeaders: any = [];
  for (const span of props.data) {
    if (span.parentSpanId === -1) {
      segmentHeaders.push(span);
    } else {
      const index = props.data.findIndex(
        (i: any) =>
          i.segmentId === span.segmentId && i.spanId === span.spanId - 1
      );
      const fixSpanKeyContent = {
        traceId: span.traceId,
        segmentId: span.segmentId,
        spanId: span.spanId - 1,
        parentSpanId: span.spanId - 2,
      };
      if (index === -1 && !_.find(fixSpans, fixSpanKeyContent)) {
        fixSpans.push({
          ...fixSpanKeyContent,
          refs: [],
          endpointName: `VNode: ${span.segmentId}`,
          serviceCode: "VirtualNode",
          type: `[Broken] ${span.type}`,
          peer: "",
          component: `VirtualNode: #${span.spanId - 1}`,
          isError: true,
          isBroken: true,
          layer: "Broken",
          tags: [],
          logs: [],
        });
      }
    }
  }
  segmentHeaders.forEach((span: Span) => {
    if (span.refs.length) {
      span.refs.forEach((ref) => {
        const index = props.data.findIndex(
          (i: any) =>
            ref.parentSegmentId === i.segmentId && ref.parentSpanId === i.spanId
        );
        if (index === -1) {
          // create a known broken node.
          const i = ref.parentSpanId;
          const fixSpanKeyContent = {
            traceId: ref.traceId,
            segmentId: ref.parentSegmentId,
            spanId: i,
            parentSpanId: i > -1 ? 0 : -1,
          };
          if (!_.find(fixSpans, fixSpanKeyContent)) {
            fixSpans.push({
              ...fixSpanKeyContent,
              refs: [],
              endpointName: `VNode: ${ref.parentSegmentId}`,
              serviceCode: "VirtualNode",
              type: `[Broken] ${ref.type}`,
              peer: "",
              component: `VirtualNode: #${i}`,
              isError: true,
              isBroken: true,
              layer: "Broken",
              tags: [],
              logs: [],
            });
          }
          // if root broken node is not exist, create a root broken node.
          if (fixSpanKeyContent.parentSpanId > -1) {
            const fixRootSpanKeyContent = {
              traceId: ref.traceId,
              segmentId: ref.parentSegmentId,
              spanId: 0,
              parentSpanId: -1,
            };
            if (!_.find(fixSpans, fixRootSpanKeyContent)) {
              fixSpans.push({
                ...fixRootSpanKeyContent,
                refs: [],
                endpointName: `VNode: ${ref.parentSegmentId}`,
                serviceCode: "VirtualNode",
                type: `[Broken] ${ref.type}`,
                peer: "",
                component: `VirtualNode: #0`,
                isError: true,
                isBroken: true,
                layer: "Broken",
                tags: [],
                logs: [],
              });
            }
          }
        }
      });
    }
  });
  [...fixSpans, ...props.data].forEach((i) => {
    i.label = i.endpointName || "no operation name";
    i.children = [];
    if (segmentGroup[i.segmentId] === undefined) {
      segmentIdGroup.push(i.segmentId);
      segmentGroup[i.segmentId] = [];
      segmentGroup[i.segmentId].push(i);
    } else {
      segmentGroup[i.segmentId].push(i);
    }
  });
  fixSpansSize.value = fixSpans.length;
  segmentIdGroup.forEach((id: string) => {
    const currentSegment = segmentGroup[id].sort(
      (a: Span, b: Span) => b.parentSpanId - a.parentSpanId
    );
    currentSegment.forEach((s: any) => {
      const index = currentSegment.findIndex(
        (i: Span) => i.spanId === s.parentSpanId
      );
      if (index !== -1) {
        if (
          (currentSegment[index].isBroken &&
            currentSegment[index].parentSpanId === -1) ||
          !currentSegment[index].isBroken
        ) {
          currentSegment[index].children.push(s);
          currentSegment[index].children.sort(
            (a: Span, b: Span) => a.spanId - b.spanId
          );
        }
      }
      if (s.isBroken) {
        const children = _.filter(props.data, (span: Span) => {
          return _.find(span.refs, {
            traceId: s.traceId,
            parentSegmentId: s.segmentId,
            parentSpanId: s.spanId,
          });
        });
        if (children.length > 0) {
          s.children.push(...children);
        }
      }
    });
    segmentGroup[id] = currentSegment[currentSegment.length - 1];
  });
  segmentIdGroup.forEach((id: string) => {
    segmentGroup[id].refs.forEach((ref: any) => {
      if (ref.traceId === props.traceId) {
        traverseTree(
          segmentGroup[ref.parentSegmentId],
          ref.parentSpanId,
          ref.parentSegmentId,
          segmentGroup[id]
        );
      }
    });
  });
  for (const i in segmentGroup) {
    if (segmentGroup[i].refs.length === 0) {
      segmentId.value.push(segmentGroup[i]);
    }
  }
  segmentId.value.forEach((i: any) => {
    collapse(i);
  });
}
function collapse(d: Span) {
  if (d.children) {
    let dur = d.endTime - d.startTime;
    d.children.forEach((i: Span) => {
      dur -= i.endTime - i.startTime;
    });
    d.dur = dur < 0 ? 0 : dur;
    d.children.forEach((i: Span) => collapse(i));
  }
}
onBeforeUnmount(() => {
  d3.selectAll(".d3-tip").remove();
});
watch(
  () => props.data,
  () => {
    if (!props.data.length) {
      return;
    }
    loading.value = true;
    changeTree();
    tree.value.init(
      { label: "TRACE_ROOT", children: segmentId.value },
      props.data,
      fixSpansSize.value
    );
    tree.value.draw(() => {
      setTimeout(() => {
        loading.value = false;
      }, 200);
    });
  }
);
</script>
<style lang="scss" scoped>
.trace-node .group {
  cursor: pointer;
  fill-opacity: 0;
}

.trace-node-container {
  fill: rgba(0, 0, 0, 0);
  stroke-width: 5px;
  cursor: pointer;

  &:hover {
    fill: rgba(0, 0, 0, 0.05);
  }
}

.trace-node .node-text {
  font: 12.5px sans-serif;
  pointer-events: none;
}

.domain {
  display: none;
}

.time-charts-item {
  display: inline-block;
  padding: 2px 8px;
  border: 1px solid;
  font-size: 11px;
  border-radius: 4px;
}

.trace-list .trace-node rect {
  &:hover {
    fill: rgba(0, 0, 0, 0.05);
  }
}

.dialog-c-text {
  white-space: pre;
  overflow: auto;
  font-family: monospace;
}
</style>