lmccay commented on a change in pull request #231: KNOX-2128 - Custom
DataSource and SQL Commands for KnoxShell and KnoxShellTable
URL: https://github.com/apache/knox/pull/231#discussion_r363387749
##########
File path:
gateway-shell/src/main/java/org/apache/knox/gateway/shell/KnoxSession.java
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@@ -570,6 +580,89 @@ public String toString() {
return String.format(Locale.ROOT, "KnoxSession{base='%s'}", base);
}
+ /**
+ * Persist provided Map to a file within the {user.home}/.knoxshell directory
+ * @param <T>
+ * @param fileName of persisted file
+ * @param map to persist
+ */
+ public static <T> void persistToKnoxShell(String fileName, Map<String,
List<T>> map) {
+ String s = JsonUtils.renderAsJsonString(map);
+ String home = System.getProperty("user.home");
+ try {
+ FileUtils.write(new File(
+ home + File.separator +
+ ".knoxshell" + File.separator + fileName),
+ s, StandardCharsets.UTF_8);
+ } catch (IOException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ }
+ }
Review comment:
I can't say it is impossible to have multiple knoxshells reading/writing at
once, so I'll add those protections. Thanks. It should create .knoxshell if it
doesn't already exist.
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