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Fixing docker issues. Now the server can run in linux docker container but doesn't work with real redis yet

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This commit is contained in:
Simon Zeltser 2018-06-21 14:53:07 -07:00
parent 238197008c
commit 5d44d019b3
4 changed files with 75 additions and 22 deletions
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8
src/cartservice/Dockerfile Normal file
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@ -0,0 +1,8 @@
FROM gcr.io/google-appengine/aspnetcore:2.1.0
COPY . /app
WORKDIR /app
ENTRYPOINT ["dotnet", "cartservice.dll", "start"]
ENV REDIS_ADDR=172.30.147.193
ENV CART_SERVICE_ADDR=127.0.0.1
ENV CART_SERVICE_PORT=8080
EXPOSE 8080

63
src/cartservice/Program.cs
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@ -1,5 +1,7 @@
using System;
using System.IO;
using System.Threading;
using System.Threading.Tasks;
using cartservice.cartstore;
using CommandLine;
using Grpc.Core;
@ -11,6 +13,7 @@ namespace cartservice
{
const string CART_SERVICE_ADDRESS = "CART_SERVICE_ADDR";
const string REDIS_ADDRESS = "REDIS_ADDR";
const string CART_SERVICE_PORT = "CART_SERVICE_PORT";
[Verb("start", HelpText = "Starts the server listening on provided port")]
class ServerOptions
@ -18,15 +21,18 @@ namespace cartservice
[Option('h', "hostname", HelpText = "The ip on which the server is running. If not provided, CART_SERVICE_ADDR environment variable value will be used. If not defined, localhost is used")]
public string Host { get; set; }
[Option('p', "port", HelpText = "The port on for running the server", Required = true)]
[Option('p', "port", HelpText = "The port on for running the server")]
public int Port { get; set; }
[Option('r', "redis", HelpText = "The ip of redis cache")]
public string Redis { get; set; }
}
static object StartServer(string host, int port, string redisAddress)
{
// Run the server in a separate thread and make the main thread busy waiting.
// The busy wait is because when we run in a container, we can't use techniques such as waiting on user input (Console.Readline())
Task.Run(() =>
{
var store = new RedisCartStore(redisAddress);
Server server = new Server
@ -36,12 +42,14 @@ namespace cartservice
};
Console.WriteLine($"Cart server is listening at {host}:{port}");
Console.WriteLine("Press any key to stop the server...");
server.Start();
});
Console.ReadKey();
server.ShutdownAsync().Wait();
// Busy wait to keep the process alive
while(true)
{
Thread.Sleep(TimeSpan.FromMinutes(10));
}
return null;
}
@ -60,25 +68,50 @@ namespace cartservice
Parser.Default.ParseArguments<ServerOptions>(args).MapResult(
(ServerOptions options) =>
{
string host = options.Host;
if (string.IsNullOrEmpty(host))
// Set hostname/ip address
string hostname = options.Host;
if (string.IsNullOrEmpty(hostname))
{
Console.WriteLine($"Reading host address from {CART_SERVICE_ADDRESS} environment variable...");
host = Environment.GetEnvironmentVariable(CART_SERVICE_ADDRESS);
if (string.IsNullOrEmpty(host))
Console.WriteLine($"Reading host address from {CART_SERVICE_ADDRESS} environment variable");
hostname = Environment.GetEnvironmentVariable(CART_SERVICE_ADDRESS);
if (string.IsNullOrEmpty(hostname))
{
Console.WriteLine("Setting the host to 127.0.0.1");
host = "127.0.0.1";
Console.WriteLine($"Environment variable {CART_SERVICE_ADDRESS} was not set. Setting the host to 127.0.0.1");
hostname = "127.0.0.1";
}
}
// Set the port
int port = options.Port;
if (options.Port <= 0)
{
Console.WriteLine($"Reading cart service port from {CART_SERVICE_ADDRESS} environment variable");
string portStr = Environment.GetEnvironmentVariable(CART_SERVICE_PORT);
if (string.IsNullOrEmpty(portStr))
{
Console.WriteLine($"{CART_SERVICE_PORT} environment variable was not set. Setting the port to 8080");
port = 8080;
}
else
{
port = int.Parse(portStr);
}
}
// Set redis cache host (hostname+port)
string redis = options.Redis;
if (string.IsNullOrEmpty(redis))
{
Console.WriteLine("Reading redis cache address from environment variable");
Console.WriteLine($"Reading redis cache address from environment variable {REDIS_ADDRESS}");
redis = Environment.GetEnvironmentVariable(REDIS_ADDRESS);
if (string.IsNullOrEmpty(redis))
{
Console.WriteLine("Redis cache host(hostname+port) was not specified. It should be specified via command line or REDIS_ADDRESS environment variable.");
return -1;
}
return StartServer(host, options.Port, redis);
}
return StartServer(hostname, port, redis);
},
errs => 1);
break;

7
src/cartservice/build_image.bat Normal file
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@ -0,0 +1,7 @@
@echo off
echo building container image for cart service
docker build -t cartservice .
echo running the image, mapping the port
docker run -it --rm -p 5000:8080 --name

5
src/cartservice/cartservice.csproj
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@ -16,4 +16,9 @@
<PackageReference Include="StackExchange.Redis" Version="1.2.6" />
</ItemGroup>
<ItemGroup>
<None Update="Dockerfile">
<CopyToOutputDirectory>Always</CopyToOutputDirectory>
</None>
</ItemGroup>
</Project>