http://git-wip-us.apache.org/repos/asf/hbase-site/blob/c635e71b/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ZKUtil.ZKUtilOp.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ZKUtil.ZKUtilOp.html b/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ZKUtil.ZKUtilOp.html index bc14b2e..547dec5 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ZKUtil.ZKUtilOp.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ZKUtil.ZKUtilOp.html @@ -139,2012 +139,2013 @@ <span class="sourceLineNo">131</span> int retry = conf.getInt("zookeeper.recovery.retry", 3);<a name="line.131"></a> <span class="sourceLineNo">132</span> int retryIntervalMillis =<a name="line.132"></a> <span class="sourceLineNo">133</span> conf.getInt("zookeeper.recovery.retry.intervalmill", 1000);<a name="line.133"></a> -<span class="sourceLineNo">134</span> zkDumpConnectionTimeOut = conf.getInt("zookeeper.dump.connection.timeout",<a name="line.134"></a> -<span class="sourceLineNo">135</span> 1000);<a name="line.135"></a> -<span class="sourceLineNo">136</span> return new RecoverableZooKeeper(ensemble, timeout, watcher,<a name="line.136"></a> -<span class="sourceLineNo">137</span> retry, retryIntervalMillis, identifier);<a name="line.137"></a> -<span class="sourceLineNo">138</span> }<a name="line.138"></a> -<span class="sourceLineNo">139</span><a name="line.139"></a> -<span class="sourceLineNo">140</span> /**<a name="line.140"></a> -<span class="sourceLineNo">141</span> * Log in the current zookeeper server process using the given configuration<a name="line.141"></a> -<span class="sourceLineNo">142</span> * keys for the credential file and login principal.<a name="line.142"></a> -<span class="sourceLineNo">143</span> *<a name="line.143"></a> -<span class="sourceLineNo">144</span> * <p><strong>This is only applicable when running on secure hbase</strong><a name="line.144"></a> -<span class="sourceLineNo">145</span> * On regular HBase (without security features), this will safely be ignored.<a name="line.145"></a> -<span class="sourceLineNo">146</span> * </p><a name="line.146"></a> -<span class="sourceLineNo">147</span> *<a name="line.147"></a> -<span class="sourceLineNo">148</span> * @param conf The configuration data to use<a name="line.148"></a> -<span class="sourceLineNo">149</span> * @param keytabFileKey Property key used to configure the path to the credential file<a name="line.149"></a> -<span class="sourceLineNo">150</span> * @param userNameKey Property key used to configure the login principal<a name="line.150"></a> -<span class="sourceLineNo">151</span> * @param hostname Current hostname to use in any credentials<a name="line.151"></a> -<span class="sourceLineNo">152</span> * @throws IOException underlying exception from SecurityUtil.login() call<a name="line.152"></a> -<span class="sourceLineNo">153</span> */<a name="line.153"></a> -<span class="sourceLineNo">154</span> public static void loginServer(Configuration conf, String keytabFileKey,<a name="line.154"></a> -<span class="sourceLineNo">155</span> String userNameKey, String hostname) throws IOException {<a name="line.155"></a> -<span class="sourceLineNo">156</span> login(conf, keytabFileKey, userNameKey, hostname,<a name="line.156"></a> -<span class="sourceLineNo">157</span> ZooKeeperSaslServer.LOGIN_CONTEXT_NAME_KEY,<a name="line.157"></a> -<span class="sourceLineNo">158</span> JaasConfiguration.SERVER_KEYTAB_KERBEROS_CONFIG_NAME);<a name="line.158"></a> -<span class="sourceLineNo">159</span> }<a name="line.159"></a> -<span class="sourceLineNo">160</span><a name="line.160"></a> -<span class="sourceLineNo">161</span> /**<a name="line.161"></a> -<span class="sourceLineNo">162</span> * Log in the current zookeeper client using the given configuration<a name="line.162"></a> -<span class="sourceLineNo">163</span> * keys for the credential file and login principal.<a name="line.163"></a> -<span class="sourceLineNo">164</span> *<a name="line.164"></a> -<span class="sourceLineNo">165</span> * <p><strong>This is only applicable when running on secure hbase</strong><a name="line.165"></a> -<span class="sourceLineNo">166</span> * On regular HBase (without security features), this will safely be ignored.<a name="line.166"></a> -<span class="sourceLineNo">167</span> * </p><a name="line.167"></a> -<span class="sourceLineNo">168</span> *<a name="line.168"></a> -<span class="sourceLineNo">169</span> * @param conf The configuration data to use<a name="line.169"></a> -<span class="sourceLineNo">170</span> * @param keytabFileKey Property key used to configure the path to the credential file<a name="line.170"></a> -<span class="sourceLineNo">171</span> * @param userNameKey Property key used to configure the login principal<a name="line.171"></a> -<span class="sourceLineNo">172</span> * @param hostname Current hostname to use in any credentials<a name="line.172"></a> -<span class="sourceLineNo">173</span> * @throws IOException underlying exception from SecurityUtil.login() call<a name="line.173"></a> -<span class="sourceLineNo">174</span> */<a name="line.174"></a> -<span class="sourceLineNo">175</span> public static void loginClient(Configuration conf, String keytabFileKey,<a name="line.175"></a> -<span class="sourceLineNo">176</span> String userNameKey, String hostname) throws IOException {<a name="line.176"></a> -<span class="sourceLineNo">177</span> login(conf, keytabFileKey, userNameKey, hostname,<a name="line.177"></a> -<span class="sourceLineNo">178</span> ZooKeeperSaslClient.LOGIN_CONTEXT_NAME_KEY,<a name="line.178"></a> -<span class="sourceLineNo">179</span> JaasConfiguration.CLIENT_KEYTAB_KERBEROS_CONFIG_NAME);<a name="line.179"></a> -<span class="sourceLineNo">180</span> }<a name="line.180"></a> -<span class="sourceLineNo">181</span><a name="line.181"></a> -<span class="sourceLineNo">182</span> /**<a name="line.182"></a> -<span class="sourceLineNo">183</span> * Log in the current process using the given configuration keys for the<a name="line.183"></a> -<span class="sourceLineNo">184</span> * credential file and login principal.<a name="line.184"></a> -<span class="sourceLineNo">185</span> *<a name="line.185"></a> -<span class="sourceLineNo">186</span> * <p><strong>This is only applicable when running on secure hbase</strong><a name="line.186"></a> -<span class="sourceLineNo">187</span> * On regular HBase (without security features), this will safely be ignored.<a name="line.187"></a> -<span class="sourceLineNo">188</span> * </p><a name="line.188"></a> -<span class="sourceLineNo">189</span> *<a name="line.189"></a> -<span class="sourceLineNo">190</span> * @param conf The configuration data to use<a name="line.190"></a> -<span class="sourceLineNo">191</span> * @param keytabFileKey Property key used to configure the path to the credential file<a name="line.191"></a> -<span class="sourceLineNo">192</span> * @param userNameKey Property key used to configure the login principal<a name="line.192"></a> -<span class="sourceLineNo">193</span> * @param hostname Current hostname to use in any credentials<a name="line.193"></a> -<span class="sourceLineNo">194</span> * @param loginContextProperty property name to expose the entry name<a name="line.194"></a> -<span class="sourceLineNo">195</span> * @param loginContextName jaas entry name<a name="line.195"></a> -<span class="sourceLineNo">196</span> * @throws IOException underlying exception from SecurityUtil.login() call<a name="line.196"></a> -<span class="sourceLineNo">197</span> */<a name="line.197"></a> -<span class="sourceLineNo">198</span> private static void login(Configuration conf, String keytabFileKey,<a name="line.198"></a> -<span class="sourceLineNo">199</span> String userNameKey, String hostname,<a name="line.199"></a> -<span class="sourceLineNo">200</span> String loginContextProperty, String loginContextName)<a name="line.200"></a> -<span class="sourceLineNo">201</span> throws IOException {<a name="line.201"></a> -<span class="sourceLineNo">202</span> if (!isSecureZooKeeper(conf))<a name="line.202"></a> -<span class="sourceLineNo">203</span> return;<a name="line.203"></a> -<span class="sourceLineNo">204</span><a name="line.204"></a> -<span class="sourceLineNo">205</span> // User has specified a jaas.conf, keep this one as the good one.<a name="line.205"></a> -<span class="sourceLineNo">206</span> // HBASE_OPTS="-Djava.security.auth.login.config=jaas.conf"<a name="line.206"></a> -<span class="sourceLineNo">207</span> if (System.getProperty("java.security.auth.login.config") != null)<a name="line.207"></a> -<span class="sourceLineNo">208</span> return;<a name="line.208"></a> -<span class="sourceLineNo">209</span><a name="line.209"></a> -<span class="sourceLineNo">210</span> // No keytab specified, no auth<a name="line.210"></a> -<span class="sourceLineNo">211</span> String keytabFilename = conf.get(keytabFileKey);<a name="line.211"></a> -<span class="sourceLineNo">212</span> if (keytabFilename == null) {<a name="line.212"></a> -<span class="sourceLineNo">213</span> LOG.warn("no keytab specified for: " + keytabFileKey);<a name="line.213"></a> -<span class="sourceLineNo">214</span> return;<a name="line.214"></a> -<span class="sourceLineNo">215</span> }<a name="line.215"></a> -<span class="sourceLineNo">216</span><a name="line.216"></a> -<span class="sourceLineNo">217</span> String principalConfig = conf.get(userNameKey, System.getProperty("user.name"));<a name="line.217"></a> -<span class="sourceLineNo">218</span> String principalName = SecurityUtil.getServerPrincipal(principalConfig, hostname);<a name="line.218"></a> -<span class="sourceLineNo">219</span><a name="line.219"></a> -<span class="sourceLineNo">220</span> // Initialize the "jaas.conf" for keyTab/principal,<a name="line.220"></a> -<span class="sourceLineNo">221</span> // If keyTab is not specified use the Ticket Cache.<a name="line.221"></a> -<span class="sourceLineNo">222</span> // and set the zookeeper login context name.<a name="line.222"></a> -<span class="sourceLineNo">223</span> JaasConfiguration jaasConf = new JaasConfiguration(loginContextName,<a name="line.223"></a> -<span class="sourceLineNo">224</span> principalName, keytabFilename);<a name="line.224"></a> -<span class="sourceLineNo">225</span> javax.security.auth.login.Configuration.setConfiguration(jaasConf);<a name="line.225"></a> -<span class="sourceLineNo">226</span> System.setProperty(loginContextProperty, loginContextName);<a name="line.226"></a> -<span class="sourceLineNo">227</span> }<a name="line.227"></a> -<span class="sourceLineNo">228</span><a name="line.228"></a> -<span class="sourceLineNo">229</span> /**<a name="line.229"></a> -<span class="sourceLineNo">230</span> * A JAAS configuration that defines the login modules that we want to use for login.<a name="line.230"></a> -<span class="sourceLineNo">231</span> */<a name="line.231"></a> -<span class="sourceLineNo">232</span> private static class JaasConfiguration extends javax.security.auth.login.Configuration {<a name="line.232"></a> -<span class="sourceLineNo">233</span> private static final String SERVER_KEYTAB_KERBEROS_CONFIG_NAME =<a name="line.233"></a> -<span class="sourceLineNo">234</span> "zookeeper-server-keytab-kerberos";<a name="line.234"></a> -<span class="sourceLineNo">235</span> private static final String CLIENT_KEYTAB_KERBEROS_CONFIG_NAME =<a name="line.235"></a> -<span class="sourceLineNo">236</span> "zookeeper-client-keytab-kerberos";<a name="line.236"></a> -<span class="sourceLineNo">237</span><a name="line.237"></a> -<span class="sourceLineNo">238</span> private static final Map<String, String> BASIC_JAAS_OPTIONS = new HashMap<>();<a name="line.238"></a> -<span class="sourceLineNo">239</span> static {<a name="line.239"></a> -<span class="sourceLineNo">240</span> String jaasEnvVar = System.getenv("HBASE_JAAS_DEBUG");<a name="line.240"></a> -<span class="sourceLineNo">241</span> if (jaasEnvVar != null && "true".equalsIgnoreCase(jaasEnvVar)) {<a name="line.241"></a> -<span class="sourceLineNo">242</span> BASIC_JAAS_OPTIONS.put("debug", "true");<a name="line.242"></a> -<span class="sourceLineNo">243</span> }<a name="line.243"></a> -<span class="sourceLineNo">244</span> }<a name="line.244"></a> -<span class="sourceLineNo">245</span><a name="line.245"></a> -<span class="sourceLineNo">246</span> private static final Map<String,String> KEYTAB_KERBEROS_OPTIONS = new HashMap<>();<a name="line.246"></a> -<span class="sourceLineNo">247</span> static {<a name="line.247"></a> -<span class="sourceLineNo">248</span> KEYTAB_KERBEROS_OPTIONS.put("doNotPrompt", "true");<a name="line.248"></a> -<span class="sourceLineNo">249</span> KEYTAB_KERBEROS_OPTIONS.put("storeKey", "true");<a name="line.249"></a> -<span class="sourceLineNo">250</span> KEYTAB_KERBEROS_OPTIONS.put("refreshKrb5Config", "true");<a name="line.250"></a> -<span class="sourceLineNo">251</span> KEYTAB_KERBEROS_OPTIONS.putAll(BASIC_JAAS_OPTIONS);<a name="line.251"></a> -<span class="sourceLineNo">252</span> }<a name="line.252"></a> -<span class="sourceLineNo">253</span><a name="line.253"></a> -<span class="sourceLineNo">254</span> private static final AppConfigurationEntry KEYTAB_KERBEROS_LOGIN =<a name="line.254"></a> -<span class="sourceLineNo">255</span> new AppConfigurationEntry(KerberosUtil.getKrb5LoginModuleName(),<a name="line.255"></a> -<span class="sourceLineNo">256</span> LoginModuleControlFlag.REQUIRED,<a name="line.256"></a> -<span class="sourceLineNo">257</span> KEYTAB_KERBEROS_OPTIONS);<a name="line.257"></a> -<span class="sourceLineNo">258</span><a name="line.258"></a> -<span class="sourceLineNo">259</span> private static final AppConfigurationEntry[] KEYTAB_KERBEROS_CONF =<a name="line.259"></a> -<span class="sourceLineNo">260</span> new AppConfigurationEntry[]{KEYTAB_KERBEROS_LOGIN};<a name="line.260"></a> -<span class="sourceLineNo">261</span><a name="line.261"></a> -<span class="sourceLineNo">262</span> private javax.security.auth.login.Configuration baseConfig;<a name="line.262"></a> -<span class="sourceLineNo">263</span> private final String loginContextName;<a name="line.263"></a> -<span class="sourceLineNo">264</span> private final boolean useTicketCache;<a name="line.264"></a> -<span class="sourceLineNo">265</span> private final String keytabFile;<a name="line.265"></a> -<span class="sourceLineNo">266</span> private final String principal;<a name="line.266"></a> -<span class="sourceLineNo">267</span><a name="line.267"></a> -<span class="sourceLineNo">268</span> public JaasConfiguration(String loginContextName, String principal, String keytabFile) {<a name="line.268"></a> -<span class="sourceLineNo">269</span> this(loginContextName, principal, keytabFile, keytabFile == null || keytabFile.length() == 0);<a name="line.269"></a> -<span class="sourceLineNo">270</span> }<a name="line.270"></a> -<span class="sourceLineNo">271</span><a name="line.271"></a> -<span class="sourceLineNo">272</span> private JaasConfiguration(String loginContextName, String principal,<a name="line.272"></a> -<span class="sourceLineNo">273</span> String keytabFile, boolean useTicketCache) {<a name="line.273"></a> -<span class="sourceLineNo">274</span> try {<a name="line.274"></a> -<span class="sourceLineNo">275</span> this.baseConfig = javax.security.auth.login.Configuration.getConfiguration();<a name="line.275"></a> -<span class="sourceLineNo">276</span> } catch (SecurityException e) {<a name="line.276"></a> -<span class="sourceLineNo">277</span> this.baseConfig = null;<a name="line.277"></a> -<span class="sourceLineNo">278</span> }<a name="line.278"></a> -<span class="sourceLineNo">279</span> this.loginContextName = loginContextName;<a name="line.279"></a> -<span class="sourceLineNo">280</span> this.useTicketCache = useTicketCache;<a name="line.280"></a> -<span class="sourceLineNo">281</span> this.keytabFile = keytabFile;<a name="line.281"></a> -<span class="sourceLineNo">282</span> this.principal = principal;<a name="line.282"></a> -<span class="sourceLineNo">283</span> LOG.info("JaasConfiguration loginContextName=" + loginContextName +<a name="line.283"></a> -<span class="sourceLineNo">284</span> " principal=" + principal + " useTicketCache=" + useTicketCache +<a name="line.284"></a> -<span class="sourceLineNo">285</span> " keytabFile=" + keytabFile);<a name="line.285"></a> -<span class="sourceLineNo">286</span> }<a name="line.286"></a> -<span class="sourceLineNo">287</span><a name="line.287"></a> -<span class="sourceLineNo">288</span> @Override<a name="line.288"></a> -<span class="sourceLineNo">289</span> public AppConfigurationEntry[] getAppConfigurationEntry(String appName) {<a name="line.289"></a> -<span class="sourceLineNo">290</span> if (loginContextName.equals(appName)) {<a name="line.290"></a> -<span class="sourceLineNo">291</span> if (!useTicketCache) {<a name="line.291"></a> -<span class="sourceLineNo">292</span> KEYTAB_KERBEROS_OPTIONS.put("keyTab", keytabFile);<a name="line.292"></a> -<span class="sourceLineNo">293</span> KEYTAB_KERBEROS_OPTIONS.put("useKeyTab", "true");<a name="line.293"></a> -<span class="sourceLineNo">294</span> }<a name="line.294"></a> -<span class="sourceLineNo">295</span> KEYTAB_KERBEROS_OPTIONS.put("principal", principal);<a name="line.295"></a> -<span class="sourceLineNo">296</span> KEYTAB_KERBEROS_OPTIONS.put("useTicketCache", useTicketCache ? "true" : "false");<a name="line.296"></a> -<span class="sourceLineNo">297</span> return KEYTAB_KERBEROS_CONF;<a name="line.297"></a> -<span class="sourceLineNo">298</span> }<a name="line.298"></a> -<span class="sourceLineNo">299</span> if (baseConfig != null) return baseConfig.getAppConfigurationEntry(appName);<a name="line.299"></a> -<span class="sourceLineNo">300</span> return(null);<a name="line.300"></a> -<span class="sourceLineNo">301</span> }<a name="line.301"></a> -<span class="sourceLineNo">302</span> }<a name="line.302"></a> -<span class="sourceLineNo">303</span><a name="line.303"></a> -<span class="sourceLineNo">304</span> //<a name="line.304"></a> -<span class="sourceLineNo">305</span> // Helper methods<a name="line.305"></a> -<span class="sourceLineNo">306</span> //<a name="line.306"></a> -<span class="sourceLineNo">307</span><a name="line.307"></a> -<span class="sourceLineNo">308</span> /**<a name="line.308"></a> -<span class="sourceLineNo">309</span> * Join the prefix znode name with the suffix znode name to generate a proper<a name="line.309"></a> -<span class="sourceLineNo">310</span> * full znode name.<a name="line.310"></a> -<span class="sourceLineNo">311</span> *<a name="line.311"></a> -<span class="sourceLineNo">312</span> * Assumes prefix does not end with slash and suffix does not begin with it.<a name="line.312"></a> -<span class="sourceLineNo">313</span> *<a name="line.313"></a> -<span class="sourceLineNo">314</span> * @param prefix beginning of znode name<a name="line.314"></a> -<span class="sourceLineNo">315</span> * @param suffix ending of znode name<a name="line.315"></a> -<span class="sourceLineNo">316</span> * @return result of properly joining prefix with suffix<a name="line.316"></a> -<span class="sourceLineNo">317</span> */<a name="line.317"></a> -<span class="sourceLineNo">318</span> public static String joinZNode(String prefix, String suffix) {<a name="line.318"></a> -<span class="sourceLineNo">319</span> return prefix + ZNODE_PATH_SEPARATOR + suffix;<a name="line.319"></a> -<span class="sourceLineNo">320</span> }<a name="line.320"></a> -<span class="sourceLineNo">321</span><a name="line.321"></a> -<span class="sourceLineNo">322</span> /**<a name="line.322"></a> -<span class="sourceLineNo">323</span> * Returns the full path of the immediate parent of the specified node.<a name="line.323"></a> -<span class="sourceLineNo">324</span> * @param node path to get parent of<a name="line.324"></a> -<span class="sourceLineNo">325</span> * @return parent of path, null if passed the root node or an invalid node<a name="line.325"></a> -<span class="sourceLineNo">326</span> */<a name="line.326"></a> -<span class="sourceLineNo">327</span> public static String getParent(String node) {<a name="line.327"></a> -<span class="sourceLineNo">328</span> int idx = node.lastIndexOf(ZNODE_PATH_SEPARATOR);<a name="line.328"></a> -<span class="sourceLineNo">329</span> return idx <= 0 ? null : node.substring(0, idx);<a name="line.329"></a> -<span class="sourceLineNo">330</span> }<a name="line.330"></a> -<span class="sourceLineNo">331</span><a name="line.331"></a> -<span class="sourceLineNo">332</span> /**<a name="line.332"></a> -<span class="sourceLineNo">333</span> * Get the name of the current node from the specified fully-qualified path.<a name="line.333"></a> -<span class="sourceLineNo">334</span> * @param path fully-qualified path<a name="line.334"></a> -<span class="sourceLineNo">335</span> * @return name of the current node<a name="line.335"></a> -<span class="sourceLineNo">336</span> */<a name="line.336"></a> -<span class="sourceLineNo">337</span> public static String getNodeName(String path) {<a name="line.337"></a> -<span class="sourceLineNo">338</span> return path.substring(path.lastIndexOf("/")+1);<a name="line.338"></a> -<span class="sourceLineNo">339</span> }<a name="line.339"></a> -<span class="sourceLineNo">340</span><a name="line.340"></a> -<span class="sourceLineNo">341</span> //<a name="line.341"></a> -<span class="sourceLineNo">342</span> // Existence checks and watches<a name="line.342"></a> -<span class="sourceLineNo">343</span> //<a name="line.343"></a> -<span class="sourceLineNo">344</span><a name="line.344"></a> -<span class="sourceLineNo">345</span> /**<a name="line.345"></a> -<span class="sourceLineNo">346</span> * Watch the specified znode for delete/create/change events. The watcher is<a name="line.346"></a> -<span class="sourceLineNo">347</span> * set whether or not the node exists. If the node already exists, the method<a name="line.347"></a> -<span class="sourceLineNo">348</span> * returns true. If the node does not exist, the method returns false.<a name="line.348"></a> -<span class="sourceLineNo">349</span> *<a name="line.349"></a> -<span class="sourceLineNo">350</span> * @param zkw zk reference<a name="line.350"></a> -<span class="sourceLineNo">351</span> * @param znode path of node to watch<a name="line.351"></a> -<span class="sourceLineNo">352</span> * @return true if znode exists, false if does not exist or error<a name="line.352"></a> -<span class="sourceLineNo">353</span> * @throws KeeperException if unexpected zookeeper exception<a name="line.353"></a> -<span class="sourceLineNo">354</span> */<a name="line.354"></a> -<span class="sourceLineNo">355</span> public static boolean watchAndCheckExists(ZooKeeperWatcher zkw, String znode)<a name="line.355"></a> -<span class="sourceLineNo">356</span> throws KeeperException {<a name="line.356"></a> -<span class="sourceLineNo">357</span> try {<a name="line.357"></a> -<span class="sourceLineNo">358</span> Stat s = zkw.getRecoverableZooKeeper().exists(znode, zkw);<a name="line.358"></a> -<span class="sourceLineNo">359</span> boolean exists = s != null ? true : false;<a name="line.359"></a> -<span class="sourceLineNo">360</span> if (exists) {<a name="line.360"></a> -<span class="sourceLineNo">361</span> LOG.debug(zkw.prefix("Set watcher on existing znode=" + znode));<a name="line.361"></a> -<span class="sourceLineNo">362</span> } else {<a name="line.362"></a> -<span class="sourceLineNo">363</span> LOG.debug(zkw.prefix("Set watcher on znode that does not yet exist, " + znode));<a name="line.363"></a> -<span class="sourceLineNo">364</span> }<a name="line.364"></a> -<span class="sourceLineNo">365</span> return exists;<a name="line.365"></a> -<span class="sourceLineNo">366</span> } catch (KeeperException e) {<a name="line.366"></a> -<span class="sourceLineNo">367</span> LOG.warn(zkw.prefix("Unable to set watcher on znode " + znode), e);<a name="line.367"></a> -<span class="sourceLineNo">368</span> zkw.keeperException(e);<a name="line.368"></a> -<span class="sourceLineNo">369</span> return false;<a name="line.369"></a> -<span class="sourceLineNo">370</span> } catch (InterruptedException e) {<a name="line.370"></a> -<span class="sourceLineNo">371</span> LOG.warn(zkw.prefix("Unable to set watcher on znode " + znode), e);<a name="line.371"></a> -<span class="sourceLineNo">372</span> zkw.interruptedException(e);<a name="line.372"></a> -<span class="sourceLineNo">373</span> return false;<a name="line.373"></a> -<span class="sourceLineNo">374</span> }<a name="line.374"></a> -<span class="sourceLineNo">375</span> }<a name="line.375"></a> -<span class="sourceLineNo">376</span><a name="line.376"></a> -<span class="sourceLineNo">377</span> /**<a name="line.377"></a> -<span class="sourceLineNo">378</span> * Watch the specified znode, but only if exists. Useful when watching<a name="line.378"></a> -<span class="sourceLineNo">379</span> * for deletions. Uses .getData() (and handles NoNodeException) instead<a name="line.379"></a> -<span class="sourceLineNo">380</span> * of .exists() to accomplish this, as .getData() will only set a watch if<a name="line.380"></a> -<span class="sourceLineNo">381</span> * the znode exists.<a name="line.381"></a> -<span class="sourceLineNo">382</span> * @param zkw zk reference<a name="line.382"></a> -<span class="sourceLineNo">383</span> * @param znode path of node to watch<a name="line.383"></a> -<span class="sourceLineNo">384</span> * @return true if the watch is set, false if node does not exists<a name="line.384"></a> -<span class="sourceLineNo">385</span> * @throws KeeperException if unexpected zookeeper exception<a name="line.385"></a> -<span class="sourceLineNo">386</span> */<a name="line.386"></a> -<span class="sourceLineNo">387</span> public static boolean setWatchIfNodeExists(ZooKeeperWatcher zkw, String znode)<a name="line.387"></a> -<span class="sourceLineNo">388</span> throws KeeperException {<a name="line.388"></a> -<span class="sourceLineNo">389</span> try {<a name="line.389"></a> -<span class="sourceLineNo">390</span> zkw.getRecoverableZooKeeper().getData(znode, true, null);<a name="line.390"></a> -<span class="sourceLineNo">391</span> return true;<a name="line.391"></a> -<span class="sourceLineNo">392</span> } catch (NoNodeException e) {<a name="line.392"></a> -<span class="sourceLineNo">393</span> return false;<a name="line.393"></a> -<span class="sourceLineNo">394</span> } catch (InterruptedException e) {<a name="line.394"></a> -<span class="sourceLineNo">395</span> LOG.warn(zkw.prefix("Unable to set watcher on znode " + znode), e);<a name="line.395"></a> -<span class="sourceLineNo">396</span> zkw.interruptedException(e);<a name="line.396"></a> -<span class="sourceLineNo">397</span> return false;<a name="line.397"></a> -<span class="sourceLineNo">398</span> }<a name="line.398"></a> -<span class="sourceLineNo">399</span> }<a name="line.399"></a> -<span class="sourceLineNo">400</span><a name="line.400"></a> -<span class="sourceLineNo">401</span> /**<a name="line.401"></a> -<span class="sourceLineNo">402</span> * Check if the specified node exists. Sets no watches.<a name="line.402"></a> -<span class="sourceLineNo">403</span> *<a name="line.403"></a> -<span class="sourceLineNo">404</span> * @param zkw zk reference<a name="line.404"></a> -<span class="sourceLineNo">405</span> * @param znode path of node to watch<a name="line.405"></a> -<span class="sourceLineNo">406</span> * @return version of the node if it exists, -1 if does not exist<a name="line.406"></a> -<span class="sourceLineNo">407</span> * @throws KeeperException if unexpected zookeeper exception<a name="line.407"></a> -<span class="sourceLineNo">408</span> */<a name="line.408"></a> -<span class="sourceLineNo">409</span> public static int checkExists(ZooKeeperWatcher zkw, String znode)<a name="line.409"></a> -<span class="sourceLineNo">410</span> throws KeeperException {<a name="line.410"></a> -<span class="sourceLineNo">411</span> try {<a name="line.411"></a> -<span class="sourceLineNo">412</span> Stat s = zkw.getRecoverableZooKeeper().exists(znode, null);<a name="line.412"></a> -<span class="sourceLineNo">413</span> return s != null ? s.getVersion() : -1;<a name="line.413"></a> -<span class="sourceLineNo">414</span> } catch (KeeperException e) {<a name="line.414"></a> -<span class="sourceLineNo">415</span> LOG.warn(zkw.prefix("Unable to set watcher on znode (" + znode + ")"), e);<a name="line.415"></a> -<span class="sourceLineNo">416</span> zkw.keeperException(e);<a name="line.416"></a> -<span class="sourceLineNo">417</span> return -1;<a name="line.417"></a> -<span class="sourceLineNo">418</span> } catch (InterruptedException e) {<a name="line.418"></a> -<span class="sourceLineNo">419</span> LOG.warn(zkw.prefix("Unable to set watcher on znode (" + znode + ")"), e);<a name="line.419"></a> -<span class="sourceLineNo">420</span> zkw.interruptedException(e);<a name="line.420"></a> -<span class="sourceLineNo">421</span> return -1;<a name="line.421"></a> -<span class="sourceLineNo">422</span> }<a name="line.422"></a> -<span class="sourceLineNo">423</span> }<a name="line.423"></a> -<span class="sourceLineNo">424</span><a name="line.424"></a> -<span class="sourceLineNo">425</span> //<a name="line.425"></a> -<span class="sourceLineNo">426</span> // Znode listings<a name="line.426"></a> -<span class="sourceLineNo">427</span> //<a name="line.427"></a> -<span class="sourceLineNo">428</span><a name="line.428"></a> -<span class="sourceLineNo">429</span> /**<a name="line.429"></a> -<span class="sourceLineNo">430</span> * Lists the children znodes of the specified znode. Also sets a watch on<a name="line.430"></a> -<span class="sourceLineNo">431</span> * the specified znode which will capture a NodeDeleted event on the specified<a name="line.431"></a> -<span class="sourceLineNo">432</span> * znode as well as NodeChildrenChanged if any children of the specified znode<a name="line.432"></a> -<span class="sourceLineNo">433</span> * are created or deleted.<a name="line.433"></a> -<span class="sourceLineNo">434</span> *<a name="line.434"></a> -<span class="sourceLineNo">435</span> * Returns null if the specified node does not exist. Otherwise returns a<a name="line.435"></a> -<span class="sourceLineNo">436</span> * list of children of the specified node. If the node exists but it has no<a name="line.436"></a> -<span class="sourceLineNo">437</span> * children, an empty list will be returned.<a name="line.437"></a> -<span class="sourceLineNo">438</span> *<a name="line.438"></a> -<span class="sourceLineNo">439</span> * @param zkw zk reference<a name="line.439"></a> -<span class="sourceLineNo">440</span> * @param znode path of node to list and watch children of<a name="line.440"></a> -<span class="sourceLineNo">441</span> * @return list of children of the specified node, an empty list if the node<a name="line.441"></a> -<span class="sourceLineNo">442</span> * exists but has no children, and null if the node does not exist<a name="line.442"></a> -<span class="sourceLineNo">443</span> * @throws KeeperException if unexpected zookeeper exception<a name="line.443"></a> -<span class="sourceLineNo">444</span> */<a name="line.444"></a> -<span class="sourceLineNo">445</span> public static List<String> listChildrenAndWatchForNewChildren(<a 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Returns null if the<a name="line.492"></a> -<span class="sourceLineNo">493</span> * parent node itself does not exist.<a name="line.493"></a> -<span class="sourceLineNo">494</span> *<a name="line.494"></a> -<span class="sourceLineNo">495</span> * @param zkw zookeeper reference<a name="line.495"></a> -<span class="sourceLineNo">496</span> * @param znode node to get children<a name="line.496"></a> -<span class="sourceLineNo">497</span> * @return list of data of children of specified znode, empty if no children,<a name="line.497"></a> -<span class="sourceLineNo">498</span> * null if parent does not exist<a name="line.498"></a> -<span class="sourceLineNo">499</span> * @throws KeeperException if unexpected zookeeper exception<a name="line.499"></a> -<span class="sourceLineNo">500</span> */<a name="line.500"></a> -<span class="sourceLineNo">501</span> public static List<String> listChildrenNoWatch(ZooKeeperWatcher zkw, String znode)<a name="line.501"></a> -<span class="sourceLineNo">502</span> throws KeeperException {<a name="line.502"></a> -<span class="sourceLineNo">503</span> List<String> children = null;<a name="line.503"></a> -<span class="sourceLineNo">504</span> try {<a name="line.504"></a> -<span class="sourceLineNo">505</span> // List the children without watching<a name="line.505"></a> -<span class="sourceLineNo">506</span> children = zkw.getRecoverableZooKeeper().getChildren(znode, null);<a name="line.506"></a> -<span class="sourceLineNo">507</span> } catch(KeeperException.NoNodeException nne) {<a name="line.507"></a> -<span class="sourceLineNo">508</span> return null;<a name="line.508"></a> -<span class="sourceLineNo">509</span> } catch(InterruptedException ie) {<a name="line.509"></a> -<span class="sourceLineNo">510</span> zkw.interruptedException(ie);<a name="line.510"></a> -<span class="sourceLineNo">511</span> }<a name="line.511"></a> -<span class="sourceLineNo">512</span> return children;<a name="line.512"></a> -<span class="sourceLineNo">513</span> }<a name="line.513"></a> -<span class="sourceLineNo">514</span><a name="line.514"></a> -<span class="sourceLineNo">515</span> /**<a name="line.515"></a> -<span class="sourceLineNo">516</span> * Simple class to hold a node path and node data.<a name="line.516"></a> -<span class="sourceLineNo">517</span> * @deprecated Unused<a name="line.517"></a> -<span class="sourceLineNo">518</span> */<a name="line.518"></a> -<span class="sourceLineNo">519</span> @Deprecated<a name="line.519"></a> -<span class="sourceLineNo">520</span> public static class NodeAndData {<a name="line.520"></a> -<span class="sourceLineNo">521</span> private String node;<a name="line.521"></a> -<span class="sourceLineNo">522</span> private byte [] data;<a name="line.522"></a> -<span class="sourceLineNo">523</span> public NodeAndData(String node, byte [] data) {<a name="line.523"></a> -<span class="sourceLineNo">524</span> this.node = node;<a name="line.524"></a> -<span class="sourceLineNo">525</span> this.data = data;<a name="line.525"></a> -<span class="sourceLineNo">526</span> }<a name="line.526"></a> -<span class="sourceLineNo">527</span> public String getNode() {<a name="line.527"></a> -<span class="sourceLineNo">528</span> return node;<a name="line.528"></a> -<span class="sourceLineNo">529</span> }<a name="line.529"></a> -<span class="sourceLineNo">530</span> public byte [] getData() {<a name="line.530"></a> -<span class="sourceLineNo">531</span> return data;<a name="line.531"></a> -<span class="sourceLineNo">532</span> }<a name="line.532"></a> -<span class="sourceLineNo">533</span> @Override<a name="line.533"></a> -<span class="sourceLineNo">534</span> public String toString() {<a name="line.534"></a> -<span class="sourceLineNo">535</span> return node;<a name="line.535"></a> -<span class="sourceLineNo">536</span> }<a name="line.536"></a> -<span class="sourceLineNo">537</span> public boolean isEmpty() {<a name="line.537"></a> -<span class="sourceLineNo">538</span> return (data == null || data.length == 0);<a name="line.538"></a> -<span class="sourceLineNo">539</span> }<a name="line.539"></a> -<span class="sourceLineNo">540</span> }<a name="line.540"></a> -<span class="sourceLineNo">541</span><a name="line.541"></a> -<span class="sourceLineNo">542</span> /**<a name="line.542"></a> -<span class="sourceLineNo">543</span> * Checks if the specified znode has any children. Sets no watches.<a name="line.543"></a> -<span class="sourceLineNo">544</span> *<a name="line.544"></a> -<span class="sourceLineNo">545</span> * Returns true if the node exists and has children. 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0 : stat.getNumChildren();<a name="line.594"></a> -<span class="sourceLineNo">595</span> } catch(KeeperException e) {<a name="line.595"></a> -<span class="sourceLineNo">596</span> LOG.warn(zkw.prefix("Unable to get children of node " + znode));<a name="line.596"></a> -<span class="sourceLineNo">597</span> zkw.keeperException(e);<a name="line.597"></a> -<span class="sourceLineNo">598</span> } catch(InterruptedException e) {<a name="line.598"></a> -<span class="sourceLineNo">599</span> zkw.interruptedException(e);<a name="line.599"></a> -<span class="sourceLineNo">600</span> }<a name="line.600"></a> -<span class="sourceLineNo">601</span> return 0;<a name="line.601"></a> -<span class="sourceLineNo">602</span> }<a name="line.602"></a> -<span class="sourceLineNo">603</span><a name="line.603"></a> -<span class="sourceLineNo">604</span> //<a name="line.604"></a> -<span class="sourceLineNo">605</span> // Data retrieval<a name="line.605"></a> -<span class="sourceLineNo">606</span> //<a name="line.606"></a> -<span class="sourceLineNo">607</span><a name="line.607"></a> -<span class="sourceLineNo">608</span> /**<a name="line.608"></a> -<span class="sourceLineNo">609</span> * Get znode data. Does not set a watcher.<a name="line.609"></a> -<span class="sourceLineNo">610</span> * @return ZNode data, null if the node does not exist or if there is an<a name="line.610"></a> -<span class="sourceLineNo">611</span> * error.<a name="line.611"></a> -<span class="sourceLineNo">612</span> */<a name="line.612"></a> -<span class="sourceLineNo">613</span> public static byte [] getData(ZooKeeperWatcher zkw, String znode)<a name="line.613"></a> -<span class="sourceLineNo">614</span> throws KeeperException, InterruptedException {<a name="line.614"></a> -<span class="sourceLineNo">615</span> try {<a name="line.615"></a> -<span class="sourceLineNo">616</span> byte [] data = zkw.getRecoverableZooKeeper().getData(znode, null, null);<a name="line.616"></a> -<span class="sourceLineNo">617</span> logRetrievedMsg(zkw, znode, data, false);<a name="line.617"></a> -<span class="sourceLineNo">618</span> return data;<a name="line.618"></a> -<span class="sourceLineNo">619</span> } catch (KeeperException.NoNodeException e) {<a name="line.619"></a> -<span class="sourceLineNo">620</span> LOG.debug(zkw.prefix("Unable to get data of znode " + znode + " " +<a name="line.620"></a> -<span class="sourceLineNo">621</span> "because node does not exist (not an error)"));<a name="line.621"></a> -<span class="sourceLineNo">622</span> return null;<a name="line.622"></a> -<span class="sourceLineNo">623</span> } catch (KeeperException e) {<a name="line.623"></a> -<span class="sourceLineNo">624</span> LOG.warn(zkw.prefix("Unable to get data of znode " + znode), e);<a name="line.624"></a> -<span class="sourceLineNo">625</span> zkw.keeperException(e);<a name="line.625"></a> -<span class="sourceLineNo">626</span> return null;<a name="line.626"></a> -<span class="sourceLineNo">627</span> }<a name="line.627"></a> -<span class="sourceLineNo">628</span> }<a name="line.628"></a> -<span class="sourceLineNo">629</span><a name="line.629"></a> -<span class="sourceLineNo">630</span> /**<a name="line.630"></a> -<span class="sourceLineNo">631</span> * Get the data at the specified znode and set a watch.<a name="line.631"></a> -<span class="sourceLineNo">632</span> *<a name="line.632"></a> -<span class="sourceLineNo">633</span> * Returns the data and sets a watch if the node exists. 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If the node exists but it has no<a name="line.731"></a> -<span class="sourceLineNo">732</span> * children, an empty list will be returned.<a name="line.732"></a> -<span class="sourceLineNo">733</span> *<a name="line.733"></a> -<span class="sourceLineNo">734</span> * @param zkw zk reference<a name="line.734"></a> -<span class="sourceLineNo">735</span> * @param baseNode path of node to list and watch children of<a name="line.735"></a> -<span class="sourceLineNo">736</span> * @return list of data of children of the specified node, an empty list if the node<a name="line.736"></a> -<span class="sourceLineNo">737</span> * exists but has no children, and null if the node does not exist<a name="line.737"></a> -<span class="sourceLineNo">738</span> * @throws KeeperException if unexpected zookeeper exception<a name="line.738"></a> -<span class="sourceLineNo">739</span> * @deprecated Unused<a name="line.739"></a> -<span class="sourceLineNo">740</span> */<a name="line.740"></a> -<span 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name="line.773"></a> -<span class="sourceLineNo">774</span> @Deprecated<a name="line.774"></a> -<span class="sourceLineNo">775</span> public static void updateExistingNodeData(ZooKeeperWatcher zkw, String znode,<a name="line.775"></a> -<span class="sourceLineNo">776</span> byte [] data, int expectedVersion)<a name="line.776"></a> -<span class="sourceLineNo">777</span> throws KeeperException {<a name="line.777"></a> -<span class="sourceLineNo">778</span> try {<a name="line.778"></a> -<span class="sourceLineNo">779</span> zkw.getRecoverableZooKeeper().setData(znode, data, expectedVersion);<a name="line.779"></a> -<span class="sourceLineNo">780</span> } catch(InterruptedException ie) {<a name="line.780"></a> -<span class="sourceLineNo">781</span> zkw.interruptedException(ie);<a name="line.781"></a> -<span class="sourceLineNo">782</span> }<a name="line.782"></a> -<span class="sourceLineNo">783</span> }<a name="line.783"></a> -<span class="sourceLineNo">784</span><a name="line.784"></a> 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class="sourceLineNo">891</span><a name="line.891"></a> -<span class="sourceLineNo">892</span> // Master & RSs uses hbase.zookeeper.client.*<a name="line.892"></a> -<span class="sourceLineNo">893</span> return "kerberos".equalsIgnoreCase(conf.get("hbase.security.authentication"));<a name="line.893"></a> -<span class="sourceLineNo">894</span> }<a name="line.894"></a> -<span class="sourceLineNo">895</span><a name="line.895"></a> -<span class="sourceLineNo">896</span> private static ArrayList<ACL> createACL(ZooKeeperWatcher zkw, String node) {<a name="line.896"></a> -<span class="sourceLineNo">897</span> return createACL(zkw, node, isSecureZooKeeper(zkw.getConfiguration()));<a name="line.897"></a> -<span class="sourceLineNo">898</span> }<a name="line.898"></a> -<span class="sourceLineNo">899</span><a name="line.899"></a> -<span class="sourceLineNo">900</span> public static ArrayList<ACL> createACL(ZooKeeperWatcher zkw, String node,<a name="line.900"></a> -<span class="sourceLineNo">901</span> boolean isSecureZooKeeper) {<a name="line.901"></a> -<span class="sourceLineNo">902</span> if (!node.startsWith(zkw.znodePaths.baseZNode)) {<a name="line.902"></a> -<span class="sourceLineNo">903</span> return Ids.OPEN_ACL_UNSAFE;<a name="line.903"></a> -<span class="sourceLineNo">904</span> }<a name="line.904"></a> -<span class="sourceLineNo">905</span> if (isSecureZooKeeper) {<a name="line.905"></a> -<span class="sourceLineNo">906</span> ArrayList<ACL> acls = new ArrayList<>();<a name="line.906"></a> -<span class="sourceLineNo">907</span> // add permission to hbase supper user<a name="line.907"></a> -<span class="sourceLineNo">908</span> String[] superUsers = zkw.getConfiguration().getStrings(Superusers.SUPERUSER_CONF_KEY);<a name="line.908"></a> -<span class="sourceLineNo">909</span> if (superUsers != null) {<a name="line.909"></a> -<span class="sourceLineNo">910</span> List<String> groups = new ArrayList<>();<a name="line.910"></a> -<span class="sourceLineNo">911</span> for (String user : superUsers) {<a name="line.911"></a> -<span class="sourceLineNo">912</span> if (AuthUtil.isGroupPrincipal(user)) {<a name="line.912"></a> -<span class="sourceLineNo">913</span> // TODO: Set node ACL for groups when ZK supports this feature<a name="line.913"></a> -<span class="sourceLineNo">914</span> groups.add(user);<a name="line.914"></a> -<span class="sourceLineNo">915</span> } else {<a name="line.915"></a> -<span class="sourceLineNo">916</span> acls.add(new ACL(Perms.ALL, new Id("sasl", user)));<a name="line.916"></a> -<span class="sourceLineNo">917</span> }<a name="line.917"></a> -<span class="sourceLineNo">918</span> }<a name="line.918"></a> -<span class="sourceLineNo">919</span> if (!groups.isEmpty()) {<a name="line.919"></a> -<span class="sourceLineNo">920</span> LOG.warn("Znode ACL setting for group " + groups<a name="line.920"></a> -<span class="sourceLineNo">921</span> + " is skipped, ZooKeeper doesn't support this feature presently.");<a name="line.921"></a> -<span class="sourceLineNo">922</span> }<a name="line.922"></a> -<span class="sourceLineNo">923</span> }<a name="line.923"></a> -<span class="sourceLineNo">924</span> // Certain znodes are accessed directly by the client,<a name="line.924"></a> -<span class="sourceLineNo">925</span> // so they must be readable by non-authenticated clients<a name="line.925"></a> -<span class="sourceLineNo">926</span> if (zkw.isClientReadable(node)) {<a name="line.926"></a> -<span class="sourceLineNo">927</span> acls.addAll(Ids.CREATOR_ALL_ACL);<a name="line.927"></a> -<span class="sourceLineNo">928</span> acls.addAll(Ids.READ_ACL_UNSAFE);<a name="line.928"></a> -<span class="sourceLineNo">929</span> } else {<a name="line.929"></a> -<span class="sourceLineNo">930</span> acls.addAll(Ids.CREATOR_ALL_ACL);<a name="line.930"></a> -<span class="sourceLineNo">931</span> }<a name="line.931"></a> -<span class="sourceLineNo">932</span> return acls;<a name="line.932"></a> 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created successfully because it already exists, this<a name="line.989"></a> -<span class="sourceLineNo">990</span> * method will also set a watcher on the node but return false.<a name="line.990"></a> -<span class="sourceLineNo">991</span> *<a name="line.991"></a> -<span class="sourceLineNo">992</span> * If there is another problem, a KeeperException will be thrown.<a name="line.992"></a> -<span class="sourceLineNo">993</span> *<a name="line.993"></a> -<span class="sourceLineNo">994</span> * @param zkw zk reference<a name="line.994"></a> -<span class="sourceLineNo">995</span> * @param znode path of node<a name="line.995"></a> -<span class="sourceLineNo">996</span> * @param data data of node<a name="line.996"></a> -<span class="sourceLineNo">997</span> * @return true if node created, false if not, watch set in both cases<a name="line.997"></a> -<span class="sourceLineNo">998</span> * @throws KeeperException if unexpected zookeeper exception<a name="line.998"></a> -<span 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