[GitHub] incubator-griffin pull request #444: Define griffin plain-vanilla hook.

[guoyuepeng]

Github user guoyuepeng commented on a diff in the pull request:

    https://github.com/apache/incubator-griffin/pull/444#discussion_r229713456
  
    --- Diff: 
service/src/main/java/org/apache/griffin/core/integration/GriffinEventListeners.java
 ---
    @@ -0,0 +1,61 @@
    +package org.apache.griffin.core.integration;
    +
    +import java.util.ArrayList;
    +import java.util.List;
    +import java.util.Scanner;
    +
    +import org.springframework.beans.factory.annotation.Value;
    +import org.springframework.boot.context.properties.ConfigurationProperties;
    +import org.springframework.context.annotation.Bean;
    +import org.springframework.context.annotation.Configuration;
    +import org.slf4j.Logger;
    +import org.slf4j.LoggerFactory;
    +import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
    +
    +@Configuration
    +@ConfigurationProperties(prefix = "internal.event")
    +public class GriffinEventListeners {
    +    private static final Logger LOGGER = LoggerFactory
    +        .getLogger(GriffinEventListeners.class);
    +    @Value("${internal.event.listeners}")
    +    private String listeners;
    --- End diff --
    
    We might need to use List<String> as listeners.
    In Spring, they will inject string array values as List<String>, as 
clz1,clz2,clz3


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