Package org.opennms.netmgt.newts.support

Class NewtsUtils

java.lang.Object

org.opennms.netmgt.newts.support.NewtsUtils

public abstract class NewtsUtils
extends Object

Utility functions and constants.

Author:

jwhite

Field Summary

Fields

Modifier and Type	Field	Description
static String	DEFAULT_HOSTNAME
static String	DEFAULT_KEYSPACE
static String	DEFAULT_PORT
static String	DEFAULT_TTL
static boolean	DISABLE_INDEXING
static String	HOSTNAME_PROPERTY
static org.opennms.newts.cassandra.search.CassandraIndexingOptions	INDEXING_OPTIONS
static String	KEYSPACE_PROPERTY
static int	MAX_BATCH_SIZE
static String	PORT_PROPERTY
static int	TTL
static String	TTL_PROPERTY

Constructor Summary

Constructors

Constructor	Description
NewtsUtils()

Method Summary

Modifier and Type	Method	Description
static void	addIndicesToAttributes(ResourcePath path, Map<String,String> attributes)	Extends the attribute map with indices used by the NewtsResourceStorageDao.
static org.opennms.newts.api.Sample	createSampleForIndexingStrings(org.opennms.newts.api.Context context, org.opennms.newts.api.Resource resource)	Creates a sample used to index string attributes.
static org.opennms.newts.api.search.Query	findResourcesWithMetricsAtDepth(ResourcePath path, int depth)	Constructs a query used to find all of the resources that have one or more metrics at the given depth bellow the path.
static String	toMetricName(String resourceId)	Extracts the metric name from the resource id.
static String	toResourceId(ResourcePath path)	Converts a ResourcePath to a Newts resource id.
static ResourcePath	toResourcePath(String resourceId)	Converts a Newts resource id to a ResourcePath.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DISABLE_INDEXING

public static final boolean DISABLE_INDEXING

MAX_BATCH_SIZE

public static final int MAX_BATCH_SIZE

TTL

public static final int TTL

HOSTNAME_PROPERTY

public static final String HOSTNAME_PROPERTY

See Also:

Constant Field Values

KEYSPACE_PROPERTY

public static final String KEYSPACE_PROPERTY

See Also:

Constant Field Values

PORT_PROPERTY

public static final String PORT_PROPERTY

See Also:

Constant Field Values

TTL_PROPERTY

public static final String TTL_PROPERTY

See Also:

Constant Field Values

DEFAULT_HOSTNAME

public static final String DEFAULT_HOSTNAME

See Also:

Constant Field Values

DEFAULT_KEYSPACE

public static final String DEFAULT_KEYSPACE

See Also:

Constant Field Values

DEFAULT_PORT

public static final String DEFAULT_PORT

See Also:

Constant Field Values

DEFAULT_TTL

public static final String DEFAULT_TTL

See Also:

Constant Field Values

INDEXING_OPTIONS

public static final org.opennms.newts.cassandra.search.CassandraIndexingOptions INDEXING_OPTIONS

Constructor Detail

NewtsUtils

public NewtsUtils()

Method Detail

addIndicesToAttributes

public static void addIndicesToAttributes(ResourcePath path,
                                          Map<String,String> attributes)

Extends the attribute map with indices used by the NewtsResourceStorageDao. A resource path of the form [a, b, c, d] will be indexed with:

• _idx1: (a, 4)
• _idx2: (a:b, 4)
• _idx3: (a:b:c, 4)

findResourcesWithMetricsAtDepth

public static org.opennms.newts.api.search.Query findResourcesWithMetricsAtDepth(ResourcePath path,
                                                                                 int depth)

Constructs a query used to find all of the resources that have one or more metrics at the given depth bellow the path. Requires resources to have been indexed using addIndicesToAttributes(org.opennms.netmgt.model.ResourcePath, java.util.Map<java.lang.String, java.lang.String>).

toResourceId

public static String toResourceId(ResourcePath path)

Converts a ResourcePath to a Newts resource id.

Parameters:

path - path to convert

Returns:

Newts resource id

toResourcePath

public static ResourcePath toResourcePath(String resourceId)

Converts a Newts resource id to a ResourcePath.

Parameters:

resourceId - Newts resource id

Returns:

path

toMetricName

public static String toMetricName(String resourceId)

Extracts the metric name from the resource id.

Parameters:

resourceId - Newts resource id

Returns:

metric name

createSampleForIndexingStrings

public static org.opennms.newts.api.Sample createSampleForIndexingStrings(org.opennms.newts.api.Context context,
                                                                          org.opennms.newts.api.Resource resource)

Creates a sample used to index string attributes. These should only be index and not be persisted.