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class="glyphicon glyphicon-chevron-left" href="javascript:void 0;"> </a></div><div id="content-container" class="thin-left-border col-sm-9 markdown"><div id="toc" class="toc"></div><div id="doc-content"><h1>Attribute Manifests</h1><h3 id="index">Index</h3><ul><li><a href="#istio.mixer.v1.config.AttributeManifest">AttributeManifest</a> (message)</li><li><a href="#istio.mixer.v1.config.AttributeManifest.AttributeInfo">AttributeInfo</a> (message)</li></ul><p><a name="istio.mixer.v1.config.AttributeManifest"></a></p><h3 id="attributemanifest">AttributeManifest</h3><p>AttributeManifest describes a set of Attributes produced by some component of an Istio deployment. They encode information about attribute names and types. They are used by Mixer to validate configuration supplied by the operator at runtime.</p><table><tr><th>Field</th><th>Type</th><th>Description</th></tr><a name="istio.mixer.v1.config.AttributeManifest.revision"></a><tr><td><code>revision</code></td><td>string</td><td>Optional. The revision of this document. Assigned by server.</td></tr><a name="istio.mixer.v1.config.AttributeManifest.name"></a><tr><td><code>name</code></td><td>string</td><td>Required. Name of the component producing these attributes. This can be the proxy (with the canonical name "istio-proxy") or the name of an <code>attributes</code> kind adapter in Mixer.</td></tr><a name="istio.mixer.v1.config.AttributeManifest.attributes"></a><tr><td><code>attributes</code></td><td>repeated map&lt;string, <a href="#istio.mixer.v1.config.AttributeManifest.AttributeInfo">AttributeInfo</a>&gt;</td><td><p>The set of attributes this Istio component will be responsible for producing at runtime. We map from attribute name to the attribute's specification. The name of an attribute, which is how attributes are referred to in aspect configuration, must conform to:</p><pre><code>Name = IDENT { SEPARATOR IDENT };
</code></pre><p>Where <code>IDENT</code> must match the regular expression <code>[a-z][a-z0-9]+</code> and <code>SEPARATOR</code> must match the regular expression <code>[\.-]</code>.</p><p>Attribute names must be unique within a single Istio deployment. The set of canonical attributes are described at <a href="/v0.4/docs/reference/config/mixer/attribute-vocabulary.html">/v0.4/docs/reference/config/mixer/attribute-vocabulary.html</a>. Attributes not in that list should be named with a component-specific suffix such as request.count-my.component</p></td></tr></table><p><a name="istio.mixer.v1.config.AttributeManifest.AttributeInfo"></a></p><h3 id="attributeinfo">AttributeInfo</h3><p>AttributeInfo describes the schema of an Istio <code>Attribute</code>.</p><table><tr><th>Field</th><th>Type</th><th>Description</th></tr><a name="istio.mixer.v1.config.AttributeManifest.AttributeInfo.description"></a><tr><td><code>description</code></td><td>string</td><td>Optional. A human-readable description of the attribute's purpose.</td></tr><a name="istio.mixer.v1.config.AttributeManifest.AttributeInfo.valueType"></a><tr><td><code>valueType</code></td><td><a href="/v0.4/docs/reference/config/mixer/value-type.html#istio.mixer.v1.config.descriptor.ValueType">ValueType</a></td><td>Required. The type of data carried by this attribute.</td></tr></table><p><a name="rpcIstio.mixer.v1.configIstio.mixer.v1.config.AttributeManifest.AttributeInfoDescriptionSubsectionSubsection"></a></p><h4 id="istio-attributes">Istio Attributes</h4><p>Istio uses <code>attributes</code> to describe runtime activities of Istio services. An Istio attribute carries a specific piece of information about an activity, such as the error code of an API request, the latency of an API request, or the original IP address of a TCP connection. The attributes are often generated and consumed by different services. For example, a frontend service can generate an authenticated user attribute and pass it to a backend service for access control purpose.</p><p>To simplify the system and improve developer experience, Istio uses shared attribute definitions across all components. For example, the same authenticated user attribute will be used for logging, monitoring, analytics, billing, access control, auditing. Many Istio components provide their functionality by collecting, generating, and operating on attributes. For example, the proxy collects the error code attribute, and the logging stores it into a log.</p><p><a name="rpcIstio.mixer.v1.configIstio.mixer.v1.config.AttributeManifest.AttributeInfoDescriptionSubsectionSubsection_1"></a></p><h4 id="design">Design</h4><p>Each Istio attribute must conform to an <code>AttributeInfo</code> in an <code>AttributeManifest</code> in the current Istio deployment at runtime. An <code>AttributeInfo</code> is used to define an attributes metadata: the type of its value and a detailed description that explains the semantics of the attribute type. Each attributes name is globally unique; in other words an attribute name can only appear once across all manifests.</p><p>The runtime presentation of an attribute is intentionally left out of this specification, because passing attribute using JSON, XML, or Protocol Buffers does not change the semantics of the attribute. Different implementations can choose different representations based on their needs.</p><p><a name="rpcIstio.mixer.v1.configIstio.mixer.v1.config.AttributeManifest.AttributeInfoDescriptionSubsectionSubsection_2"></a></p><h4 id="http-mapping">HTTP Mapping</h4><p>Because many systems already have REST APIs, it makes sense to define a standard HTTP mapping for Istio attributes that are compatible with typical REST APIs. The design is to map one attribute to one HTTP header, the attribute name and value becomes the HTTP header name and value. The actual encoding scheme will be decided later.</p><h3 id="custom-resource-definition">Custom Resource Definition</h3><pre><code class="language-yaml">kind: CustomResourceDefinition
apiVersion: apiextensions.k8s.io/v1beta1
metadata:
name: attributemanifests.config.istio.io
labels:
package: istio.io.mixer
istio: core
spec:
group: config.istio.io
names:
kind: attributemanifest
plural: attributemanifests
singular: attributemanifest
scope: Namespaced
version: v1alpha2
</code></pre><h3 id="example-manifest">Example Manifest</h3><pre><code class="language-yaml">apiVersion: "config.istio.io/v1alpha2"
kind: attributemanifest
metadata:
name: kubernetes
namespace: istio-system
spec:
attributes:
source.ip:
valueType: IP_ADDRESS
source.labels:
valueType: STRING_MAP
source.name:
valueType: STRING
source.namespace:
valueType: STRING
source.service:
valueType: STRING
source.serviceAccount:
valueType: STRING
destination.ip:
valueType: IP_ADDRESS
destination.labels:
valueType: STRING_MAP
destination.name:
valueType: STRING
destination.namespace:
valueType: STRING
destination.service:
valueType: STRING
destination.serviceAccount:
valueType: STRING
</code></pre></div></div></div></div></div></div><script src="/v0.4/js/sidebar.min.js"></script><footer><div class="container"><div class="row"><div class="col-lg-2 col-md-2 col-sm-2"></div><div class="col-lg-3 col-md-3 col-sm-3 col-xs-12 center-block"><ul><li><a class="header" href="/v0.4/docs/welcome">Docs</a></li><li><a href="/v0.4/docs/concepts">Concepts</a></li><li><a href="/v0.4/docs/setup">Setup</a></li><li><a href="/v0.4/docs/tasks">Tasks</a></li><li><a href="/v0.4/docs/guides">Guides</a></li><li><a href="/v0.4/docs/reference">Reference</a></li></ul></div><div class="col-lg-3 col-md-3 col-sm-3 col-xs-12 center-block"><ul><li><a class="header" href="/v0.4/help">Help</a></li><li><a href="/v0.4/faq">FAQ</a></li><li><a href="/v0.4/glossary">Glossary</a></li><li><a href="/v0.4/troubleshooting">Troubleshooting</a></li><li><a href="/v0.4/bugs">Report Bugs</a></li><li><a href="https://github.com/istio/istio.github.io/issues/new?title=Issue with _docs/reference/config/mixer/attribute-manifests.md">Doc Bugs & Gaps</a></li><li><a href="https://github.com/istio/istio.github.io/edit/master/_docs/reference/config/mixer/attribute-manifests.md">Edit This Page</a></li></ul></div><div class="col-lg-3 col-md-3 col-sm-3 col-xs-12 center-block"><ul><li> <a class="header" href="/v0.4/community">Community</a></li><li> <a href="https://groups.google.com/forum/#!forum/istio-users" target="_blank" rel="noopener">User</a> | <a href="https://groups.google.com/forum/#!forum/istio-dev" target="_blank" rel="noopener">Dev Mailing Lists</a></li><li><a href="https://twitter.com/IstioMesh" target="_blank" rel="noopener">Twitter</a></li><li><a href="https://stackoverflow.com/questions/tagged/istio" target="_blank" rel="noopener">Stack Overflow</a></li><li><a href="https://github.com/istio/community" target="_blank" rel="noopener">GitHub</a></li><li><a href="https://github.com/istio/community/blob/master/WORKING-GROUPS.md" target="_blank" rel="noopener">Working Groups</a></li></ul></div><div class="col-lg-1 col-md-1 col-sm-1"></div></div><div class="row"><p class="description small text-center"> Istio 0.4, Copyright &copy; 2017 Istio Authors<br> Archived on 20-Dec-2017</p></div></div></footer><script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-validate/1.15.0/jquery.validate.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery.form/4.2.1/jquery.form.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-visible/1.2.0/jquery.visible.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.6.0/slick.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/1.7.1/clipboard.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script> <script src="/v0.4/js/common.min.js"></script> <script src="/v0.4/js/search.js"></script> <script src="/v0.4/js/prism.min.js"></script></body></html>