use istio client-go library instead of knative (#1661)

use istio client-go library instead of knative
bump kubernetes dependency version
change code coverage to codecov

vendor/istio.io/api/mixer/v1/config/client/quota.proto

@@ -0,0 +1,160 @@
+// Copyright 2017 Istio Authors
+//
+//   Licensed under the Apache License, Version 2.0 (the "License");
+//   you may not use this file except in compliance with the License.
+//   You may obtain a copy of the License at
+//
+//       http://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+syntax = "proto3";
+
+package istio.mixer.v1.config.client;
+
+option go_package="istio.io/api/mixer/v1/config/client";
+
+import "gogoproto/gogo.proto";
+import "google/api/field_behavior.proto";
+import "mixer/v1/config/client/service.proto";
+
+option (gogoproto.goproto_getters_all) = false;
+option (gogoproto.equal_all) = false;
+option (gogoproto.gostring_all) = false;
+option (gogoproto.stable_marshaler_all) = true;
+
+// Specifies runtime quota rules.
+//  * Uses Istio attributes to match individual requests
+//  * Specifies list of quotas to use for matched requests.
+//
+// Example1:
+// Charge "request_count" quota with 1 amount for all requests.
+//
+//   QuotaSpec:
+//     - rules
+//       - quotas:
+//           quota: request_count
+//           charge: 1
+//
+// Example2:
+// For HTTP POST requests with path are prefixed with /books or
+// api.operation is create_books, charge two quotas:
+// * write_count of 1 amount
+// * request_count of 5 amount.
+//
+// ```yaml
+// QuotaSpec:
+//   - rules:
+//     - match:
+//         clause:
+//           request.path:
+//             string_prefix: /books
+//           request.http_method:
+//             string_exact: POST
+//     - match:
+//         clause:
+//           api.operation:
+//             string_exact: create_books
+//     - quotas:
+//         quota: write_count
+//         charge: 1
+//     - quotas:
+//         quota: request_count
+//         charge: 5
+// ```
+
+// Determines the quotas used for individual requests.
+//
+// <!-- go code generation tags
+// +kubetype-gen
+// +kubetype-gen:groupVersion=config.istio.io/v1alpha2
+// +genclient
+// +k8s:deepcopy-gen=true
+// -->
+message QuotaSpec {
+  // A list of Quota rules.
+  repeated QuotaRule rules = 1;
+}
+
+// Specifies a rule with list of matches and list of quotas.
+// If any clause matched, the list of quotas will be used.
+message QuotaRule {
+  // If empty, match all request.
+  // If any of match is true, it is matched.
+  repeated AttributeMatch match = 1;
+
+  // The list of quotas to charge.
+  repeated Quota quotas = 2;
+}
+
+// Describes how to match a given string in HTTP headers. Match is
+// case-sensitive.
+message StringMatch {
+  oneof match_type {
+    // exact string match
+    string exact = 1;
+    // prefix-based match
+    string prefix = 2;
+    // ECMAscript style regex-based match
+    string regex = 3;
+  }
+}
+
+// Specifies a match clause to match Istio attributes
+message AttributeMatch {
+  // Map of attribute names to StringMatch type.
+  // Each map element specifies one condition to match.
+  //
+  // Example:
+  //
+  //   clause:
+  //     source.uid:
+  //       exact: SOURCE_UID
+  //     request.http_method:
+  //       exact: POST
+  map<string, StringMatch> clause = 1;
+}
+
+// Specifies a quota to use with quota name and amount.
+message Quota {
+  // The quota name to charge
+  string quota = 1;
+
+  // The quota amount to charge
+  int32  charge = 2;
+}
+
+// QuotaSpecBinding defines the binding between QuotaSpecs and one or more
+// IstioService.
+//
+// <!-- go code generation tags
+// +kubetype-gen
+// +kubetype-gen:groupVersion=config.istio.io/v1alpha2
+// +genclient
+// +k8s:deepcopy-gen=true
+// -->
+message QuotaSpecBinding {
+  // One or more services to map the listed QuotaSpec onto.
+  repeated IstioService services = 1 [(google.api.field_behavior) = REQUIRED];
+
+  // QuotaSpecReference uniquely identifies the QuotaSpec used in the
+  // Binding.
+  message QuotaSpecReference {
+    // The short name of the QuotaSpec. This is the resource
+    // name defined by the metadata name field.
+    string name = 1 [(google.api.field_behavior) = REQUIRED];
+
+    // Optional namespace of the QuotaSpec. Defaults to the value of the
+    // metadata namespace field.
+    string namespace = 2;
+  }
+
+  // One or more QuotaSpec references that should be mapped to
+  // the specified service(s). The aggregate collection of match
+  // conditions defined in the QuotaSpecs should not overlap.
+  repeated QuotaSpecReference quota_specs = 2 [(google.api.field_behavior) = REQUIRED];
+}