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Merge pull request #7203 from murgatroid99/node_separate_health_check

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Split Node health check code into a separate package and make it use static codegen
This commit is contained in:
Nicolas Noble 2016-07-08 13:34:12 -07:00 committed by GitHub
commit 25ddf0425e
7 changed files with 555 additions and 33 deletions
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28
health_check/LICENSE Normal file
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@ -0,0 +1,28 @@
Copyright 2015, Google Inc.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

18
health_check/health.js
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@ -33,14 +33,12 @@
'use strict';
var grpc = require('../');
var grpc = require('grpc');
var _ = require('lodash');
var health_proto = grpc.load(__dirname +
'/../../proto/grpc/health/v1/health.proto');
var HealthClient = health_proto.grpc.health.v1.Health;
var health_messages = require('./v1/health_pb');
var health_service = require('./v1/health_grpc_pb');
function HealthImplementation(statusMap) {
this.statusMap = _.clone(statusMap);
@ -51,17 +49,19 @@ HealthImplementation.prototype.setStatus = function(service, status) {
};
HealthImplementation.prototype.check = function(call, callback){
var service = call.request.service;
var service = call.request.getService();
var status = _.get(this.statusMap, service, null);
if (status === null) {
callback({code:grpc.status.NOT_FOUND});
} else {
callback(null, {status: status});
var response = new health_messages.HealthCheckResponse();
response.setStatus(status);
callback(null, response);
}
};
module.exports = {
Client: HealthClient,
service: HealthClient.service,
Client: health_service.HealthClient,
service: health_service.HealthService,
Implementation: HealthImplementation
};

37
health_check/node_modules/grpc.js generated vendored Normal file
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@ -0,0 +1,37 @@
/*
*
* Copyright 2016, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/* This exists solely to allow the generated code to import the grpc module
* without using a relative path */
module.exports = require('../..');

29
health_check/package.json Normal file
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@ -0,0 +1,29 @@
{
"name": "grpc-health-check",
"version": "0.16.0-dev",
"author": "Google Inc.",
"description": "Health check service for use with gRPC",
"repository": {
"type": "git",
"url": "https://github.com/grpc/grpc.git"
},
"bugs": "https://github.com/grpc/grpc/issues",
"contributors": [
{
"name": "Michael Lumish",
"email": "mlumish@google.com"
}
],
"dependencies": {
"grpc": "^0.15.0",
"lodash": "^3.9.3",
"google-protobuf": "^3.0.0-alpha.5"
},
"files": {
"LICENSE",
"health.js",
"v1"
},
"main": "src/node/index.js",
"license": "BSD-3-Clause"
}

74
health_check/v1/health_grpc_pb.js Normal file
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@ -0,0 +1,74 @@
// GENERATED CODE -- DO NOT EDIT!
// Original file comments:
// Copyright 2015, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
'use strict';
var grpc = require('grpc');
var v1_health_pb = require('../v1/health_pb.js');
function serialize_HealthCheckRequest(arg) {
if (!(arg instanceof v1_health_pb.HealthCheckRequest)) {
throw new Error('Expected argument of type HealthCheckRequest');
}
return new Buffer(arg.serializeBinary());
}
function deserialize_HealthCheckRequest(buffer_arg) {
return v1_health_pb.HealthCheckRequest.deserializeBinary(new Uint8Array(buffer_arg));
}
function serialize_HealthCheckResponse(arg) {
if (!(arg instanceof v1_health_pb.HealthCheckResponse)) {
throw new Error('Expected argument of type HealthCheckResponse');
}
return new Buffer(arg.serializeBinary());
}
function deserialize_HealthCheckResponse(buffer_arg) {
return v1_health_pb.HealthCheckResponse.deserializeBinary(new Uint8Array(buffer_arg));
}
var HealthService = exports.HealthService = {
check: {
path: '/grpc.health.v1.Health/Check',
requestStream: false,
responseStream: false,
requestType: v1_health_pb.HealthCheckRequest,
responseType: v1_health_pb.HealthCheckResponse,
requestSerialize: serialize_HealthCheckRequest,
requestDeserialize: deserialize_HealthCheckRequest,
responseSerialize: serialize_HealthCheckResponse,
responseDeserialize: deserialize_HealthCheckResponse,
},
};
exports.HealthClient = grpc.makeGenericClientConstructor(HealthService);

342
health_check/v1/health_pb.js Normal file
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@ -0,0 +1,342 @@
/**
* @fileoverview
* @enhanceable
* @public
*/
// GENERATED CODE -- DO NOT EDIT!
var jspb = require('google-protobuf');
var goog = jspb;
var global = Function('return this')();
goog.exportSymbol('proto.grpc.health.v1.HealthCheckRequest', null, global);
goog.exportSymbol('proto.grpc.health.v1.HealthCheckResponse', null, global);
goog.exportSymbol('proto.grpc.health.v1.HealthCheckResponse.ServingStatus', null, global);
/**
* Generated by JsPbCodeGenerator.
* @param {Array=} opt_data Optional initial data array, typically from a
* server response, or constructed directly in Javascript. The array is used
* in place and becomes part of the constructed object. It is not cloned.
* If no data is provided, the constructed object will be empty, but still
* valid.
* @extends {jspb.Message}
* @constructor
*/
proto.grpc.health.v1.HealthCheckRequest = function(opt_data) {
jspb.Message.initialize(this, opt_data, 0, -1, null, null);
};
goog.inherits(proto.grpc.health.v1.HealthCheckRequest, jspb.Message);
if (goog.DEBUG && !COMPILED) {
proto.grpc.health.v1.HealthCheckRequest.displayName = 'proto.grpc.health.v1.HealthCheckRequest';
}
if (jspb.Message.GENERATE_TO_OBJECT) {
/**
* Creates an object representation of this proto suitable for use in Soy templates.
* Field names that are reserved in JavaScript and will be renamed to pb_name.
* To access a reserved field use, foo.pb_<name>, eg, foo.pb_default.
* For the list of reserved names please see:
* com.google.apps.jspb.JsClassTemplate.JS_RESERVED_WORDS.
* @param {boolean=} opt_includeInstance Whether to include the JSPB instance
* for transitional soy proto support: http://goto/soy-param-migration
* @return {!Object}
*/
proto.grpc.health.v1.HealthCheckRequest.prototype.toObject = function(opt_includeInstance) {
return proto.grpc.health.v1.HealthCheckRequest.toObject(opt_includeInstance, this);
};
/**
* Static version of the {@see toObject} method.
* @param {boolean|undefined} includeInstance Whether to include the JSPB
* instance for transitional soy proto support:
* http://goto/soy-param-migration
* @param {!proto.grpc.health.v1.HealthCheckRequest} msg The msg instance to transform.
* @return {!Object}
*/
proto.grpc.health.v1.HealthCheckRequest.toObject = function(includeInstance, msg) {
var f, obj = {
service: msg.getService()
};
if (includeInstance) {
obj.$jspbMessageInstance = msg;
}
return obj;
};
}
/**
* Deserializes binary data (in protobuf wire format).
* @param {jspb.ByteSource} bytes The bytes to deserialize.
* @return {!proto.grpc.health.v1.HealthCheckRequest}
*/
proto.grpc.health.v1.HealthCheckRequest.deserializeBinary = function(bytes) {
var reader = new jspb.BinaryReader(bytes);
var msg = new proto.grpc.health.v1.HealthCheckRequest;
return proto.grpc.health.v1.HealthCheckRequest.deserializeBinaryFromReader(msg, reader);
};
/**
* Deserializes binary data (in protobuf wire format) from the
* given reader into the given message object.
* @param {!proto.grpc.health.v1.HealthCheckRequest} msg The message object to deserialize into.
* @param {!jspb.BinaryReader} reader The BinaryReader to use.
* @return {!proto.grpc.health.v1.HealthCheckRequest}
*/
proto.grpc.health.v1.HealthCheckRequest.deserializeBinaryFromReader = function(msg, reader) {
while (reader.nextField()) {
if (reader.isEndGroup()) {
break;
}
var field = reader.getFieldNumber();
switch (field) {
case 1:
var value = /** @type {string} */ (reader.readString());
msg.setService(value);
break;
default:
reader.skipField();
break;
}
}
return msg;
};
/**
* Class method variant: serializes the given message to binary data
* (in protobuf wire format), writing to the given BinaryWriter.
* @param {!proto.grpc.health.v1.HealthCheckRequest} message
* @param {!jspb.BinaryWriter} writer
*/
proto.grpc.health.v1.HealthCheckRequest.serializeBinaryToWriter = function(message, writer) {
message.serializeBinaryToWriter(writer);
};
/**
* Serializes the message to binary data (in protobuf wire format).
* @return {!Uint8Array}
*/
proto.grpc.health.v1.HealthCheckRequest.prototype.serializeBinary = function() {
var writer = new jspb.BinaryWriter();
this.serializeBinaryToWriter(writer);
return writer.getResultBuffer();
};
/**
* Serializes the message to binary data (in protobuf wire format),
* writing to the given BinaryWriter.
* @param {!jspb.BinaryWriter} writer
*/
proto.grpc.health.v1.HealthCheckRequest.prototype.serializeBinaryToWriter = function (writer) {
var f = undefined;
f = this.getService();
if (f.length > 0) {
writer.writeString(
1,
f
);
}
};
/**
* Creates a deep clone of this proto. No data is shared with the original.
* @return {!proto.grpc.health.v1.HealthCheckRequest} The clone.
*/
proto.grpc.health.v1.HealthCheckRequest.prototype.cloneMessage = function() {
return /** @type {!proto.grpc.health.v1.HealthCheckRequest} */ (jspb.Message.cloneMessage(this));
};
/**
* optional string service = 1;
* @return {string}
*/
proto.grpc.health.v1.HealthCheckRequest.prototype.getService = function() {
return /** @type {string} */ (jspb.Message.getFieldProto3(this, 1, ""));
};
/** @param {string} value */
proto.grpc.health.v1.HealthCheckRequest.prototype.setService = function(value) {
jspb.Message.setField(this, 1, value);
};
/**
* Generated by JsPbCodeGenerator.
* @param {Array=} opt_data Optional initial data array, typically from a
* server response, or constructed directly in Javascript. The array is used
* in place and becomes part of the constructed object. It is not cloned.
* If no data is provided, the constructed object will be empty, but still
* valid.
* @extends {jspb.Message}
* @constructor
*/
proto.grpc.health.v1.HealthCheckResponse = function(opt_data) {
jspb.Message.initialize(this, opt_data, 0, -1, null, null);
};
goog.inherits(proto.grpc.health.v1.HealthCheckResponse, jspb.Message);
if (goog.DEBUG && !COMPILED) {
proto.grpc.health.v1.HealthCheckResponse.displayName = 'proto.grpc.health.v1.HealthCheckResponse';
}
if (jspb.Message.GENERATE_TO_OBJECT) {
/**
* Creates an object representation of this proto suitable for use in Soy templates.
* Field names that are reserved in JavaScript and will be renamed to pb_name.
* To access a reserved field use, foo.pb_<name>, eg, foo.pb_default.
* For the list of reserved names please see:
* com.google.apps.jspb.JsClassTemplate.JS_RESERVED_WORDS.
* @param {boolean=} opt_includeInstance Whether to include the JSPB instance
* for transitional soy proto support: http://goto/soy-param-migration
* @return {!Object}
*/
proto.grpc.health.v1.HealthCheckResponse.prototype.toObject = function(opt_includeInstance) {
return proto.grpc.health.v1.HealthCheckResponse.toObject(opt_includeInstance, this);
};
/**
* Static version of the {@see toObject} method.
* @param {boolean|undefined} includeInstance Whether to include the JSPB
* instance for transitional soy proto support:
* http://goto/soy-param-migration
* @param {!proto.grpc.health.v1.HealthCheckResponse} msg The msg instance to transform.
* @return {!Object}
*/
proto.grpc.health.v1.HealthCheckResponse.toObject = function(includeInstance, msg) {
var f, obj = {
status: msg.getStatus()
};
if (includeInstance) {
obj.$jspbMessageInstance = msg;
}
return obj;
};
}
/**
* Deserializes binary data (in protobuf wire format).
* @param {jspb.ByteSource} bytes The bytes to deserialize.
* @return {!proto.grpc.health.v1.HealthCheckResponse}
*/
proto.grpc.health.v1.HealthCheckResponse.deserializeBinary = function(bytes) {
var reader = new jspb.BinaryReader(bytes);
var msg = new proto.grpc.health.v1.HealthCheckResponse;
return proto.grpc.health.v1.HealthCheckResponse.deserializeBinaryFromReader(msg, reader);
};
/**
* Deserializes binary data (in protobuf wire format) from the
* given reader into the given message object.
* @param {!proto.grpc.health.v1.HealthCheckResponse} msg The message object to deserialize into.
* @param {!jspb.BinaryReader} reader The BinaryReader to use.
* @return {!proto.grpc.health.v1.HealthCheckResponse}
*/
proto.grpc.health.v1.HealthCheckResponse.deserializeBinaryFromReader = function(msg, reader) {
while (reader.nextField()) {
if (reader.isEndGroup()) {
break;
}
var field = reader.getFieldNumber();
switch (field) {
case 1:
var value = /** @type {!proto.grpc.health.v1.HealthCheckResponse.ServingStatus} */ (reader.readEnum());
msg.setStatus(value);
break;
default:
reader.skipField();
break;
}
}
return msg;
};
/**
* Class method variant: serializes the given message to binary data
* (in protobuf wire format), writing to the given BinaryWriter.
* @param {!proto.grpc.health.v1.HealthCheckResponse} message
* @param {!jspb.BinaryWriter} writer
*/
proto.grpc.health.v1.HealthCheckResponse.serializeBinaryToWriter = function(message, writer) {
message.serializeBinaryToWriter(writer);
};
/**
* Serializes the message to binary data (in protobuf wire format).
* @return {!Uint8Array}
*/
proto.grpc.health.v1.HealthCheckResponse.prototype.serializeBinary = function() {
var writer = new jspb.BinaryWriter();
this.serializeBinaryToWriter(writer);
return writer.getResultBuffer();
};
/**
* Serializes the message to binary data (in protobuf wire format),
* writing to the given BinaryWriter.
* @param {!jspb.BinaryWriter} writer
*/
proto.grpc.health.v1.HealthCheckResponse.prototype.serializeBinaryToWriter = function (writer) {
var f = undefined;
f = this.getStatus();
if (f !== 0.0) {
writer.writeEnum(
1,
f
);
}
};
/**
* Creates a deep clone of this proto. No data is shared with the original.
* @return {!proto.grpc.health.v1.HealthCheckResponse} The clone.
*/
proto.grpc.health.v1.HealthCheckResponse.prototype.cloneMessage = function() {
return /** @type {!proto.grpc.health.v1.HealthCheckResponse} */ (jspb.Message.cloneMessage(this));
};
/**
* optional ServingStatus status = 1;
* @return {!proto.grpc.health.v1.HealthCheckResponse.ServingStatus}
*/
proto.grpc.health.v1.HealthCheckResponse.prototype.getStatus = function() {
return /** @type {!proto.grpc.health.v1.HealthCheckResponse.ServingStatus} */ (jspb.Message.getFieldProto3(this, 1, 0));
};
/** @param {!proto.grpc.health.v1.HealthCheckResponse.ServingStatus} value */
proto.grpc.health.v1.HealthCheckResponse.prototype.setStatus = function(value) {
jspb.Message.setField(this, 1, value);
};
/**
* @enum {number}
*/
proto.grpc.health.v1.HealthCheckResponse.ServingStatus = {
UNKNOWN: 0,
SERVING: 1,
NOT_SERVING: 2
};
goog.object.extend(exports, proto.grpc.health.v1);

60
test/health_test.js
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@ -35,15 +35,19 @@
var assert = require('assert');
var health = require('../health_check/health.js');
var health = require('../health_check/health');
var health_messages = require('../health_check/v1/health_pb');
var ServingStatus = health_messages.HealthCheckResponse.ServingStatus;
var grpc = require('../');
describe('Health Checking', function() {
var statusMap = {
'': 'SERVING',
'grpc.test.TestServiceNotServing': 'NOT_SERVING',
'grpc.test.TestServiceServing': 'SERVING'
'': ServingStatus.SERVING,
'grpc.test.TestServiceNotServing': ServingStatus.NOT_SERVING,
'grpc.test.TestServiceServing': ServingStatus.SERVING
};
var healthServer;
var healthImpl;
@ -51,7 +55,7 @@ describe('Health Checking', function() {
before(function() {
healthServer = new grpc.Server();
healthImpl = new health.Implementation(statusMap);
healthServer.addProtoService(health.service, healthImpl);
healthServer.addService(health.service, healthImpl);
var port_num = healthServer.bind('0.0.0.0:0',
grpc.ServerCredentials.createInsecure());
healthServer.start();
@ -62,43 +66,51 @@ describe('Health Checking', function() {
healthServer.forceShutdown();
});
it('should say an enabled service is SERVING', function(done) {
healthClient.check({service: ''}, function(err, response) {
var request = new health_messages.HealthCheckRequest();
request.setService('');
healthClient.check(request, function(err, response) {
assert.ifError(err);
assert.strictEqual(response.status, 'SERVING');
assert.strictEqual(response.getStatus(), ServingStatus.SERVING);
done();
});
});
it('should say that a disabled service is NOT_SERVING', function(done) {
healthClient.check({service: 'grpc.test.TestServiceNotServing'},
function(err, response) {
assert.ifError(err);
assert.strictEqual(response.status, 'NOT_SERVING');
done();
});
var request = new health_messages.HealthCheckRequest();
request.setService('grpc.test.TestServiceNotServing');
healthClient.check(request, function(err, response) {
assert.ifError(err);
assert.strictEqual(response.getStatus(), ServingStatus.NOT_SERVING);
done();
});
});
it('should say that an enabled service is SERVING', function(done) {
healthClient.check({service: 'grpc.test.TestServiceServing'},
function(err, response) {
assert.ifError(err);
assert.strictEqual(response.status, 'SERVING');
done();
});
var request = new health_messages.HealthCheckRequest();
request.setService('grpc.test.TestServiceServing');
healthClient.check(request, function(err, response) {
assert.ifError(err);
assert.strictEqual(response.getStatus(), ServingStatus.SERVING);
done();
});
});
it('should get NOT_FOUND if the service is not registered', function(done) {
healthClient.check({service: 'not_registered'}, function(err, response) {
var request = new health_messages.HealthCheckRequest();
request.setService('not_registered');
healthClient.check(request, function(err, response) {
assert(err);
assert.strictEqual(err.code, grpc.status.NOT_FOUND);
done();
});
});
it('should get a different response if the status changes', function(done) {
healthClient.check({service: 'transient'}, function(err, response) {
var request = new health_messages.HealthCheckRequest();
request.setService('transient');
healthClient.check(request, function(err, response) {
assert(err);
assert.strictEqual(err.code, grpc.status.NOT_FOUND);
healthImpl.setStatus('transient', 'SERVING');
healthClient.check({service: 'transient'}, function(err, response) {
healthImpl.setStatus('transient', ServingStatus.SERVING);
healthClient.check(request, function(err, response) {
assert.ifError(err);
assert.strictEqual(response.status, 'SERVING');
assert.strictEqual(response.getStatus(), ServingStatus.SERVING);
done();
});
});