c857ba2d0b
To ensure consistent fieldpath matching for events, we generate the fieldpath matching using protobuf definitions. This is done through a plugin called "fieldpath" that defines a `Field` method for each type with the plugin enabled. Generated code handles top-level envelope fields, as well as deferred serialization for matching any types. In practice, this means that we can cheaply match events on `topic` and `namespace`. If we want to match on attributes within the event, we can use the `event` prefix to address these fields. For example, the following will match all envelopes that have a field named `container_id` that has the value `testing`: ``` ctr events "event.container_id==testing" ``` The above will decode the underlying event and check that particular field. Accordingly, if only `topic` or `namespace` is used, the event will not be decoded and only match on the envelope. Signed-off-by: Stephen J Day <stephen.day@docker.com>
41 lines
1.7 KiB
Protocol Buffer
41 lines
1.7 KiB
Protocol Buffer
// Protocol Buffers for Go with Gadgets
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//
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// Copyright (c) 2013, The GoGo Authors. All rights reserved.
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// http://github.com/gogo/protobuf
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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syntax = "proto2";
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package containerd.plugin;
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import "google/protobuf/descriptor.proto";
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extend google.protobuf.FileOptions {
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optional bool fieldpath_all = 63300;
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}
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extend google.protobuf.MessageOptions {
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optional bool fieldpath = 64400;
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}
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