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test-resolver.ts
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test-resolver.ts
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/*
* Copyright 2019 gRPC 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.
*
*/
// Allow `any` data type for testing runtime type checking.
// tslint:disable no-any
import * as assert from 'assert';
import * as resolverManager from '../src/resolver';
import { ServiceConfig } from '../src/service-config';
import { StatusObject } from '../src/call-stream';
import { SubchannelAddress, isTcpSubchannelAddress } from '../src/subchannel';
describe('Name Resolver', () => {
describe('DNS Names', function() {
// For some reason DNS queries sometimes take a long time on Windows
this.timeout(4000);
before(() => {
resolverManager.registerAll();
});
it('Should resolve localhost properly', done => {
const target = 'localhost:50051';
const listener: resolverManager.ResolverListener = {
onSuccessfulResolution: (
addressList: SubchannelAddress[],
serviceConfig: ServiceConfig | null,
serviceConfigError: StatusObject | null
) => {
assert(
addressList.some(
addr =>
isTcpSubchannelAddress(addr) &&
addr.host === '127.0.0.1' &&
addr.port === 50051
)
);
assert(
addressList.some(
addr =>
isTcpSubchannelAddress(addr) &&
addr.host === '::1' &&
addr.port === 50051
)
);
done();
},
onError: (error: StatusObject) => {
done(new Error(`Failed with status ${error.details}`));
},
};
const resolver = resolverManager.createResolver(target, listener);
resolver.updateResolution();
});
it('Should default to port 443', done => {
const target = 'localhost';
const listener: resolverManager.ResolverListener = {
onSuccessfulResolution: (
addressList: SubchannelAddress[],
serviceConfig: ServiceConfig | null,
serviceConfigError: StatusObject | null
) => {
assert(
addressList.some(
addr =>
isTcpSubchannelAddress(addr) &&
addr.host === '127.0.0.1' &&
addr.port === 443
)
);
assert(
addressList.some(
addr =>
isTcpSubchannelAddress(addr) &&
addr.host === '::1' &&
addr.port === 443
)
);
done();
},
onError: (error: StatusObject) => {
done(new Error(`Failed with status ${error.details}`));
},
};
const resolver = resolverManager.createResolver(target, listener);
resolver.updateResolution();
});
it('Should correctly represent an ipv4 address', done => {
const target = '1.2.3.4';
const listener: resolverManager.ResolverListener = {
onSuccessfulResolution: (
addressList: SubchannelAddress[],
serviceConfig: ServiceConfig | null,
serviceConfigError: StatusObject | null
) => {
assert(
addressList.some(
addr =>
isTcpSubchannelAddress(addr) &&
addr.host === '1.2.3.4' &&
addr.port === 443
)
);
done();
},
onError: (error: StatusObject) => {
done(new Error(`Failed with status ${error.details}`));
},
};
const resolver = resolverManager.createResolver(target, listener);
resolver.updateResolution();
});
it('Should correctly represent an ipv6 address', done => {
const target = '::1';
const listener: resolverManager.ResolverListener = {
onSuccessfulResolution: (
addressList: SubchannelAddress[],
serviceConfig: ServiceConfig | null,
serviceConfigError: StatusObject | null
) => {
assert(
addressList.some(
addr =>
isTcpSubchannelAddress(addr) &&
addr.host === '::1' &&
addr.port === 443
)
);
done();
},
onError: (error: StatusObject) => {
done(new Error(`Failed with status ${error.details}`));
},
};
const resolver = resolverManager.createResolver(target, listener);
resolver.updateResolution();
});
it('Should correctly represent a bracketed ipv6 address', done => {
const target = '[::1]:50051';
const listener: resolverManager.ResolverListener = {
onSuccessfulResolution: (
addressList: SubchannelAddress[],
serviceConfig: ServiceConfig | null,
serviceConfigError: StatusObject | null
) => {
assert(
addressList.some(
addr =>
isTcpSubchannelAddress(addr) &&
addr.host === '::1' &&
addr.port === 50051
)
);
done();
},
onError: (error: StatusObject) => {
done(new Error(`Failed with status ${error.details}`));
},
};
const resolver = resolverManager.createResolver(target, listener);
resolver.updateResolution();
});
it('Should resolve a public address', done => {
const target = 'example.com';
const listener: resolverManager.ResolverListener = {
onSuccessfulResolution: (
addressList: SubchannelAddress[],
serviceConfig: ServiceConfig | null,
serviceConfigError: StatusObject | null
) => {
assert(addressList.length > 0);
done();
},
onError: (error: StatusObject) => {
done(new Error(`Failed with status ${error.details}`));
},
};
const resolver = resolverManager.createResolver(target, listener);
resolver.updateResolution();
});
it('Should resolve a name with multiple dots', done => {
const target = 'loopback4.unittest.grpc.io';
const listener: resolverManager.ResolverListener = {
onSuccessfulResolution: (
addressList: SubchannelAddress[],
serviceConfig: ServiceConfig | null,
serviceConfigError: StatusObject | null
) => {
assert(
addressList.some(
addr =>
isTcpSubchannelAddress(addr) &&
addr.host === '127.0.0.1' &&
addr.port === 443
)
);
done();
},
onError: (error: StatusObject) => {
done(new Error(`Failed with status ${error.details}`));
},
};
const resolver = resolverManager.createResolver(target, listener);
resolver.updateResolution();
});
/* TODO(murgatroid99): re-enable this test, once we can get the IPv6 result
* consistently */
it.skip('Should resolve a DNS name to an IPv6 address', done => {
const target = 'loopback6.unittest.grpc.io';
const listener: resolverManager.ResolverListener = {
onSuccessfulResolution: (
addressList: SubchannelAddress[],
serviceConfig: ServiceConfig | null,
serviceConfigError: StatusObject | null
) => {
assert(
addressList.some(
addr =>
isTcpSubchannelAddress(addr) &&
addr.host === '::1' &&
addr.port === 443
)
);
done();
},
onError: (error: StatusObject) => {
done(new Error(`Failed with status ${error.details}`));
},
};
const resolver = resolverManager.createResolver(target, listener);
resolver.updateResolution();
});
it('Should resolve a DNS name to IPv4 and IPv6 addresses', done => {
const target = 'loopback46.unittest.grpc.io';
const listener: resolverManager.ResolverListener = {
onSuccessfulResolution: (
addressList: SubchannelAddress[],
serviceConfig: ServiceConfig | null,
serviceConfigError: StatusObject | null
) => {
assert(
addressList.some(
addr =>
isTcpSubchannelAddress(addr) &&
addr.host === '127.0.0.1' &&
addr.port === 443
)
);
/* TODO(murgatroid99): check for IPv6 result, once we can get that
* consistently */
done();
},
onError: (error: StatusObject) => {
done(new Error(`Failed with status ${error.details}`));
},
};
const resolver = resolverManager.createResolver(target, listener);
resolver.updateResolution();
});
it('Should resolve a name with a hyphen', done => {
/* TODO(murgatroid99): Find or create a better domain name to test this with.
* This is just the first one I found with a hyphen. */
const target = 'network-tools.com';
const listener: resolverManager.ResolverListener = {
onSuccessfulResolution: (
addressList: SubchannelAddress[],
serviceConfig: ServiceConfig | null,
serviceConfigError: StatusObject | null
) => {
assert(addressList.length > 0);
done();
},
onError: (error: StatusObject) => {
done(new Error(`Failed with status ${error.details}`));
},
};
const resolver = resolverManager.createResolver(target, listener);
resolver.updateResolution();
});
it('Should resolve gRPC interop servers', done => {
let completeCount = 0;
function done2(error?: Error) {
if (error) {
done(error);
} else {
completeCount += 1;
if (completeCount === 2) {
done();
}
}
}
const target1 = 'grpc-test.sandbox.googleapis.com';
const target2 = 'grpc-test4.sandbox.googleapis.com';
const listener: resolverManager.ResolverListener = {
onSuccessfulResolution: (
addressList: SubchannelAddress[],
serviceConfig: ServiceConfig | null,
serviceConfigError: StatusObject | null
) => {
assert(addressList.length > 0);
done2();
},
onError: (error: StatusObject) => {
done2(new Error(`Failed with status ${error.details}`));
},
};
const resolver1 = resolverManager.createResolver(target1, listener);
resolver1.updateResolution();
const resolver2 = resolverManager.createResolver(target1, listener);
resolver2.updateResolution();
});
});
describe('UDS Names', () => {
it('Should handle a relative Unix Domain Socket name', done => {
const target = 'unix:socket';
const listener: resolverManager.ResolverListener = {
onSuccessfulResolution: (
addressList: SubchannelAddress[],
serviceConfig: ServiceConfig | null,
serviceConfigError: StatusObject | null
) => {
assert(
addressList.some(
addr => !isTcpSubchannelAddress(addr) && addr.path === 'socket'
)
);
done();
},
onError: (error: StatusObject) => {
done(new Error(`Failed with status ${error.details}`));
},
};
const resolver = resolverManager.createResolver(target, listener);
resolver.updateResolution();
});
it('Should handle an absolute Unix Domain Socket name', done => {
const target = 'unix:///tmp/socket';
const listener: resolverManager.ResolverListener = {
onSuccessfulResolution: (
addressList: SubchannelAddress[],
serviceConfig: ServiceConfig | null,
serviceConfigError: StatusObject | null
) => {
assert(
addressList.some(
addr =>
!isTcpSubchannelAddress(addr) && addr.path === '/tmp/socket'
)
);
done();
},
onError: (error: StatusObject) => {
done(new Error(`Failed with status ${error.details}`));
},
};
const resolver = resolverManager.createResolver(target, listener);
resolver.updateResolution();
});
});
describe('getDefaultAuthority', () => {
class OtherResolver implements resolverManager.Resolver {
updateResolution() {
return [];
}
static getDefaultAuthority(target: string): string {
return 'other';
}
}
it('Should return the correct authority if a different resolver has been registered', () => {
const target = 'other://name';
resolverManager.registerResolver('other:', OtherResolver);
const authority = resolverManager.getDefaultAuthority(target);
assert.equal(authority, 'other');
});
});
});