> ## Documentation Index
> Fetch the complete documentation index at: https://docs.canton.network/llms.txt
> Use this file to discover all available pages before exploring further.

# ExportTopologySnapshot

<div class="x2mdx-ref-page x2mdx-ref-page--operation" />

<div className="x2mdx-ref-operation-shell">
  <div className="x2mdx-ref-operation-main">
    <div class="x2mdx-ref-breadcrumbs" role="navigation" aria-label="Breadcrumb">
      <span>Shared Administration</span>

      <span class="x2mdx-ref-breadcrumb-separator">›</span>

      <a href="../../../index">Protobuf</a>

      <span class="x2mdx-ref-breadcrumb-separator">›</span>

      <a href="../../../packages/com-digitalasset-canton-topology-admin-v30">com.digitalasset.canton.topology.admin.v30</a>

      <span class="x2mdx-ref-breadcrumb-separator">›</span>

      <span>ExportTopologySnapshot</span>
    </div>

    <div class="x2mdx-ref-hero">
      <p class="x2mdx-ref-eyebrow">com.digitalasset.canton.topology.admin.v30</p>

      <h1 class="x2mdx-ref-title">ExportTopologySnapshot</h1>

      <div class="x2mdx-ref-badges">
        <span class="x2mdx-ref-badge x2mdx-ref-badge--protocol">gRPC</span>

        <span class="x2mdx-ref-badge x2mdx-ref-badge--added">Since 3.4.0</span>
      </div>
    </div>

    <div class="x2mdx-ref-operation-bar">
      <span class="x2mdx-ref-operation-method x2mdx-ref-operation-method--rpc">RPC</span>

      <code>/com.digitalasset.canton.topology.admin.v30.TopologyManagerReadService/ExportTopologySnapshot</code>
    </div>

    ## Protocol Details

    <dl class="x2mdx-ref-meta-grid">
      <div class="x2mdx-ref-meta-item">
        <dt>Protocol</dt>
        <dd>gRPC</dd>
      </div>

      <div class="x2mdx-ref-meta-item">
        <dt>Service</dt>
        <dd>TopologyManagerReadService</dd>
      </div>

      <div class="x2mdx-ref-meta-item">
        <dt>RPC</dt>
        <dd>ExportTopologySnapshot</dd>
      </div>

      <div class="x2mdx-ref-meta-item">
        <dt>Client stream</dt>
        <dd>No</dd>
      </div>

      <div class="x2mdx-ref-meta-item">
        <dt>Server stream</dt>
        <dd>Yes</dd>
      </div>
    </dl>

    ## Inputs

    <div class="x2mdx-ref-panel">
      <div class="x2mdx-ref-panel-head">
        <h3>ExportTopologySnapshotRequest</h3>
      </div>

      <dl class="x2mdx-ref-meta-grid">
        <div class="x2mdx-ref-meta-item">
          <dt>Message</dt>
          <dd>com.digitalasset.canton.topology.admin.v30.ExportTopologySnapshotRequest</dd>
        </div>

        <div class="x2mdx-ref-meta-item">
          <dt>Client stream</dt>
          <dd>No</dd>
        </div>
      </dl>

      <div class="x2mdx-ref-fields">
        <div class="x2mdx-ref-field-row">
          <div class="x2mdx-ref-field-main">
            <code class="x2mdx-ref-field-name">base\_query</code>
            <span class="x2mdx-ref-type-badge">BaseQuery</span>
          </div>
        </div>

        <div class="x2mdx-ref-field-row">
          <div class="x2mdx-ref-field-main">
            <code class="x2mdx-ref-field-name">exclude\_mappings</code>
            <span class="x2mdx-ref-type-badge">repeated string</span>
          </div>
        </div>

        <div class="x2mdx-ref-field-row">
          <div class="x2mdx-ref-field-main">
            <code class="x2mdx-ref-field-name">filter\_namespace</code>
            <span class="x2mdx-ref-type-badge">string</span>
          </div>
        </div>
      </div>
    </div>

    ## Outputs

    <div class="x2mdx-ref-panel">
      <div class="x2mdx-ref-panel-head">
        <h3>ExportTopologySnapshotResponse</h3>
      </div>

      <dl class="x2mdx-ref-meta-grid">
        <div class="x2mdx-ref-meta-item">
          <dt>Message</dt>
          <dd>com.digitalasset.canton.topology.admin.v30.ExportTopologySnapshotResponse</dd>
        </div>

        <div class="x2mdx-ref-meta-item">
          <dt>Server stream</dt>
          <dd>Yes</dd>
        </div>
      </dl>

      <div class="x2mdx-ref-fields">
        <div class="x2mdx-ref-field-row">
          <div class="x2mdx-ref-field-main">
            <code class="x2mdx-ref-field-name">chunk</code>
            <span class="x2mdx-ref-type-badge">bytes</span>
          </div>
        </div>
      </div>
    </div>

    ## Lifecycle Changes

    <div class="x2mdx-ref-change-list">
      <div class="x2mdx-ref-change-item">
        <span class="x2mdx-ref-change-version">3.4.0</span>
        <span class="x2mdx-ref-change-detail">introduced</span>
      </div>
    </div>

    ## Related Schemas

    <AccordionGroup>
      <Accordion title="com.digitalasset.canton.topology.admin.v30.ExportTopologySnapshotRequest">
        <div class="x2mdx-ref-schema" id="schema-com-digitalasset-canton-topology-admin-v30-exporttopologysnapshotrequest">
          <div class="x2mdx-ref-fields">
            <div class="x2mdx-ref-field-row">
              <div class="x2mdx-ref-field-main">
                <code class="x2mdx-ref-field-name">base\_query</code>
                <span class="x2mdx-ref-type-badge">BaseQuery</span>
              </div>
            </div>

            <div class="x2mdx-ref-field-row">
              <div class="x2mdx-ref-field-main">
                <code class="x2mdx-ref-field-name">exclude\_mappings</code>
                <span class="x2mdx-ref-type-badge">repeated string</span>
              </div>
            </div>

            <div class="x2mdx-ref-field-row">
              <div class="x2mdx-ref-field-main">
                <code class="x2mdx-ref-field-name">filter\_namespace</code>
                <span class="x2mdx-ref-type-badge">string</span>
              </div>
            </div>
          </div>
        </div>
      </Accordion>

      <Accordion title="com.digitalasset.canton.topology.admin.v30.BaseQuery">
        <div class="x2mdx-ref-schema" id="schema-com-digitalasset-canton-topology-admin-v30-basequery">
          <div class="x2mdx-ref-fields">
            <div class="x2mdx-ref-field-row">
              <div class="x2mdx-ref-field-main">
                <code class="x2mdx-ref-field-name">store</code>
                <span class="x2mdx-ref-type-badge">StoreId</span>
              </div>
            </div>

            <div class="x2mdx-ref-field-row">
              <div class="x2mdx-ref-field-main">
                <code class="x2mdx-ref-field-name">proposals</code>
                <span class="x2mdx-ref-type-badge">bool</span>
              </div>
            </div>

            <div class="x2mdx-ref-field-row">
              <div class="x2mdx-ref-field-main">
                <code class="x2mdx-ref-field-name">operation</code>
                <span class="x2mdx-ref-type-badge">TopologyChangeOp</span>
              </div>
            </div>

            <div class="x2mdx-ref-field-row">
              <div class="x2mdx-ref-field-main">
                <code class="x2mdx-ref-field-name">snapshot</code>
                <span class="x2mdx-ref-type-badge">Timestamp</span>
              </div>
            </div>

            <div class="x2mdx-ref-field-row">
              <div class="x2mdx-ref-field-main">
                <code class="x2mdx-ref-field-name">head\_state</code>
                <span class="x2mdx-ref-type-badge">Empty</span>
              </div>
            </div>

            <div class="x2mdx-ref-field-row">
              <div class="x2mdx-ref-field-main">
                <code class="x2mdx-ref-field-name">range</code>
                <span class="x2mdx-ref-type-badge">TimeRange</span>
              </div>
            </div>

            <div class="x2mdx-ref-field-row">
              <div class="x2mdx-ref-field-main">
                <code class="x2mdx-ref-field-name">filter\_signed\_key</code>
                <span class="x2mdx-ref-type-badge">string</span>
              </div>
            </div>

            <div class="x2mdx-ref-field-row">
              <div class="x2mdx-ref-field-main">
                <code class="x2mdx-ref-field-name">protocol\_version</code>
                <span class="x2mdx-ref-type-badge">int32</span>
              </div>
            </div>
          </div>
        </div>
      </Accordion>

      <Accordion title="com.digitalasset.canton.topology.admin.v30.BaseQuery.TimeRange">
        <div class="x2mdx-ref-schema" id="schema-com-digitalasset-canton-topology-admin-v30-basequery-timerange">
          <div class="x2mdx-ref-fields">
            <div class="x2mdx-ref-field-row">
              <div class="x2mdx-ref-field-main">
                <code class="x2mdx-ref-field-name">from</code>
                <span class="x2mdx-ref-type-badge">Timestamp</span>
              </div>
            </div>

            <div class="x2mdx-ref-field-row">
              <div class="x2mdx-ref-field-main">
                <code class="x2mdx-ref-field-name">until</code>
                <span class="x2mdx-ref-type-badge">Timestamp</span>
              </div>
            </div>
          </div>
        </div>
      </Accordion>

      <Accordion title="com.digitalasset.canton.topology.admin.v30.StoreId">
        <div class="x2mdx-ref-schema" id="schema-com-digitalasset-canton-topology-admin-v30-storeid">
          <div class="x2mdx-ref-fields">
            <div class="x2mdx-ref-field-row">
              <div class="x2mdx-ref-field-main">
                <code class="x2mdx-ref-field-name">authorized</code>
                <span class="x2mdx-ref-type-badge">Authorized</span>
              </div>
            </div>

            <div class="x2mdx-ref-field-row">
              <div class="x2mdx-ref-field-main">
                <code class="x2mdx-ref-field-name">synchronizer</code>
                <span class="x2mdx-ref-type-badge">Synchronizer</span>
              </div>
            </div>

            <div class="x2mdx-ref-field-row">
              <div class="x2mdx-ref-field-main">
                <code class="x2mdx-ref-field-name">temporary</code>
                <span class="x2mdx-ref-type-badge">Temporary</span>
              </div>
            </div>
          </div>
        </div>
      </Accordion>

      <Accordion title="com.digitalasset.canton.topology.admin.v30.StoreId.Authorized">
        <div class="x2mdx-ref-schema" id="schema-com-digitalasset-canton-topology-admin-v30-storeid-authorized" />
      </Accordion>

      <Accordion title="com.digitalasset.canton.topology.admin.v30.StoreId.Temporary">
        <div class="x2mdx-ref-schema" id="schema-com-digitalasset-canton-topology-admin-v30-storeid-temporary">
          <div class="x2mdx-ref-fields">
            <div class="x2mdx-ref-field-row">
              <div class="x2mdx-ref-field-main">
                <code class="x2mdx-ref-field-name">name</code>
                <span class="x2mdx-ref-type-badge">string</span>
              </div>
            </div>
          </div>
        </div>
      </Accordion>

      <Accordion title="com.digitalasset.canton.topology.admin.v30.Synchronizer">
        <div class="x2mdx-ref-schema" id="schema-com-digitalasset-canton-topology-admin-v30-synchronizer">
          <div class="x2mdx-ref-fields">
            <div class="x2mdx-ref-field-row">
              <div class="x2mdx-ref-field-main">
                <code class="x2mdx-ref-field-name">id</code>
                <span class="x2mdx-ref-type-badge">string</span>
              </div>
            </div>

            <div class="x2mdx-ref-field-row">
              <div class="x2mdx-ref-field-main">
                <code class="x2mdx-ref-field-name">physical\_id</code>
                <span class="x2mdx-ref-type-badge">string</span>
              </div>
            </div>
          </div>
        </div>
      </Accordion>

      <Accordion title="com.digitalasset.canton.topology.admin.v30.ExportTopologySnapshotResponse">
        <div class="x2mdx-ref-schema" id="schema-com-digitalasset-canton-topology-admin-v30-exporttopologysnapshotresponse">
          <div class="x2mdx-ref-fields">
            <div class="x2mdx-ref-field-row">
              <div class="x2mdx-ref-field-main">
                <code class="x2mdx-ref-field-name">chunk</code>
                <span class="x2mdx-ref-type-badge">bytes</span>
              </div>
            </div>
          </div>
        </div>
      </Accordion>
    </AccordionGroup>
  </div>

  <div className="x2mdx-ref-right-rail" role="complementary" aria-label="Examples and responses">
    <div className="x2mdx-ref-rail-panel">
      <div className="x2mdx-ref-rail-code">
        <div className="x2mdx-ref-rail-head">
          <span className="x2mdx-ref-rail-heading">grpcurl</span>
        </div>

        ```bash grpcurl theme={"theme":{"light":"github-light","dark":"github-dark"}}
        # Add -plaintext if the server is not using TLS.
        # This RPC uses streaming semantics. Send additional JSON messages on stdin as needed.
        grpcurl \
          -d @ \
          <HOST:PORT> \
          com.digitalasset.canton.topology.admin.v30.TopologyManagerReadService/ExportTopologySnapshot <<'EOF'
        {
          "baseQuery": {
            "store": {
              "authorized": {}
            },
            "proposals": true,
            "operation": "string",
            "snapshot": "string",
            "filterSignedKey": "string",
            "protocolVersion": 0
          },
          "excludeMappings": [
            "string"
          ],
          "filterNamespace": "string"
        }
        EOF
        ```
      </div>
    </div>

    <div className="x2mdx-ref-rail-panel">
      <div className="x2mdx-ref-rail-code x2mdx-ref-rail-code--response">
        <div className="x2mdx-ref-rail-head">
          <span className="x2mdx-ref-rail-heading">OK</span>

          <span className="x2mdx-ref-response-label">application/json</span>
        </div>

        ```json OK theme={"theme":{"light":"github-light","dark":"github-dark"}}
        {
          "chunk": "BASE64_ENCODED_BYTES"
        }
        ```
      </div>
    </div>
  </div>
</div>