Add useful message when no input from terminal #29369
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Today when a user runs a CLI tool with standard input closed and no tty attached, the result from reading is null and this usually leads to a null pointer exception when we try to parse this input. This arises for example when the user runs the plugin installer through a Docker container without leaving standard input open and attaching a tty (docker exec <container ID> bin/elasticsearch-plugin install). When we try to read that the user accepts the plugin requiring additional security permissions we will get back null. This commit addresses this for all cases by throwing an illegal state exception. The solution for the user is leave standard input open and attach a tty (or, for some tools, use batch mode).
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Apr 11, 2018
Today when a user runs a CLI tool with standard input closed and no tty attached, the result from reading is null and this usually leads to a null pointer exception when we try to parse this input. This arises for example when the user runs the plugin installer through a Docker container without leaving standard input open and attaching a tty (docker exec <container ID> bin/elasticsearch-plugin install). When we try to read that the user accepts the plugin requiring additional security permissions we will get back null. This commit addresses this for all cases by throwing an illegal state exception. The solution for the user is leave standard input open and attach a tty (or, for some tools, use batch mode).
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Today when a user runs a CLI tool with standard input closed and no tty attached, the result from reading is null and this usually leads to a null pointer exception when we try to parse this input. This arises for example when the user runs the plugin installer through a Docker container without leaving standard input open and attaching a tty (docker exec bin/elasticsearch-plugin install). When we try to read that the user accepts the plugin requiring additional security permissions we will get back null. This commit addresses this for all cases by throwing an illegal state exception. The solution for the user is leave standard input open and attach a tty (or, for some tools, use batch mode).
Relates #29359, relates #29365