Package org.apache.hadoop.hive.metastore

Examples of org.apache.hadoop.hive.metastore.IMetaStoreClient

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   *
   * @return the metastore client for the current thread
   * @throws MetaException
   */
  private IMetaStoreClient getMSC() throws MetaException {
    IMetaStoreClient msc = threadLocalMSC.get();
    if(msc == null) {
      msc = this.createMetaStoreClient();
    }
    return msc;
  }
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  }

  private IMetaStoreClient getMetaStoreClient() throws ExploreException {
    if (metastoreClientLocal.get() == null) {
      try {
        IMetaStoreClient client = new HiveMetaStoreClient(new HiveConf());
        Supplier<IMetaStoreClient> supplier = Suppliers.ofInstance(client);
        metastoreClientLocal.set(supplier);

        // We use GC of the supplier as a signal for us to know that a thread is gone
        // The supplier is set into the thread local, which will get GC'ed when the thread is gone.
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      new Runnable() {
        @Override
        public void run() {
          Reference<? extends Supplier<IMetaStoreClient>> ref = metastoreClientReferenceQueue.poll();
          while (ref != null) {
            IMetaStoreClient client = metastoreClientReferences.remove(ref);
            if (client != null) {
              closeMetastoreClient(client);
            }
            ref = metastoreClientReferenceQueue.poll();
          }
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   *
   * @return the metastore client for the current thread
   * @throws MetaException
   */
  private IMetaStoreClient getMSC() throws MetaException {
    IMetaStoreClient msc = threadLocalMSC.get();
    if(msc == null) {
      msc = this.createMetaStoreClient();
      threadLocalMSC.set(msc);
    }
    return msc;
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  }

  private List<RolePrincipalGrant> getRoleGrants(String principalName, PrincipalType principalType)
      throws MetaException, TException, HiveAuthzPluginException {
    GetRoleGrantsForPrincipalRequest req = new GetRoleGrantsForPrincipalRequest(principalName, principalType);
    IMetaStoreClient metastoreClient = metastoreClientFactory.getHiveMetastoreClient();
    GetRoleGrantsForPrincipalResponse resp = metastoreClient.get_role_grants_for_principal(req);
    return resp.getPrincipalGrants();
  }
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      HivePrincipal grantorPrincipal, boolean grantOption)
          throws HiveAuthzPluginException, HiveAccessControlException {

    hivePrivileges = expandAndValidatePrivileges(hivePrivileges);

    IMetaStoreClient metastoreClient = metastoreClientFactory.getHiveMetastoreClient();
    // authorize the grant
    GrantPrivAuthUtils.authorize(hivePrincipals, hivePrivileges, hivePrivObject, grantOption,
        metastoreClient, authenticator.getUserName(), getCurrentRoleNames(), isUserAdmin());

    // grant
    PrivilegeBag privBag = SQLAuthorizationUtils.getThriftPrivilegesBag(hivePrincipals, hivePrivileges, hivePrivObject,
        grantorPrincipal, grantOption);
    try {
      metastoreClient.grant_privileges(privBag);
    } catch (Exception e) {
      throw new HiveAuthzPluginException("Error granting privileges: " + e.getMessage(), e);
    }
  }
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      HivePrincipal grantorPrincipal, boolean grantOption)
          throws HiveAuthzPluginException, HiveAccessControlException {

    hivePrivileges = expandAndValidatePrivileges(hivePrivileges);

    IMetaStoreClient metastoreClient = metastoreClientFactory.getHiveMetastoreClient();
    // authorize the revoke, and get the set of privileges to be revoked
    List<HiveObjectPrivilege> revokePrivs = RevokePrivAuthUtils
        .authorizeAndGetRevokePrivileges(hivePrincipals, hivePrivileges, hivePrivObject,
            grantOption, metastoreClient, authenticator.getUserName());

    try {
      // unfortunately, the metastore api revokes all privileges that match on
      // principal, privilege object type it does not filter on the grator
      // username.
      // So this will revoke privileges that are granted by other users.This is
      // not SQL compliant behavior. Need to change/add a metastore api
      // that has desired behavior.
      metastoreClient.revoke_privileges(new PrivilegeBag(revokePrivs));
    } catch (Exception e) {
      throw new HiveAuthzPluginException("Error revoking privileges", e);
    }
  }
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        + " allowed to grant role. " + ADMIN_ONLY_MSG + " Otherwise, " + HAS_ADMIN_PRIV_MSG);
    }
    for (HivePrincipal hivePrincipal : hivePrincipals) {
      for (String roleName : roleNames) {
        try {
          IMetaStoreClient mClient = metastoreClientFactory.getHiveMetastoreClient();
          mClient.grant_role(roleName, hivePrincipal.getName(),
              AuthorizationUtils.getThriftPrincipalType(hivePrincipal.getType()),
              grantorPrinc.getName(),
              AuthorizationUtils.getThriftPrincipalType(grantorPrinc.getType()), grantOption);
        } catch (MetaException e) {
          throw new HiveAuthzPluginException(e.getMessage(), e);
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          + " allowed to revoke role. " + ADMIN_ONLY_MSG + " Otherwise, " + HAS_ADMIN_PRIV_MSG);
    }
    for (HivePrincipal hivePrincipal : hivePrincipals) {
      for (String roleName : roleNames) {
        try {
          IMetaStoreClient mClient = metastoreClientFactory.getHiveMetastoreClient();
          mClient.revoke_role(roleName, hivePrincipal.getName(),
              AuthorizationUtils.getThriftPrincipalType(hivePrincipal.getType()));
        } catch (Exception e) {
          String msg = "Error revoking roles for " + hivePrincipal.getName() + " to role "
              + roleName + ": " + e.getMessage();
          throw new HiveAuthzPluginException(msg, e);
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  @Override
  public List<HivePrivilegeInfo> showPrivileges(HivePrincipal principal, HivePrivilegeObject privObj)
      throws HiveAuthzPluginException {
    try {
      IMetaStoreClient mClient = metastoreClientFactory.getHiveMetastoreClient();
      List<HivePrivilegeInfo> resPrivInfos = new ArrayList<HivePrivilegeInfo>();
      String principalName = principal == null ? null : principal.getName();
      PrincipalType principalType = principal == null ? null :
          AuthorizationUtils.getThriftPrincipalType(principal.getType());

      // get metastore/thrift privilege object using metastore api
      List<HiveObjectPrivilege> msObjPrivs = mClient.list_privileges(principalName,
          principalType,
          SQLAuthorizationUtils.getThriftHiveObjectRef(privObj));


      // convert the metastore thrift objects to result objects
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