| <?xml version="1.0" encoding="UTF-8"?> |
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| <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" attributeFormDefault="unqualified" elementFormDefault="qualified" |
| targetNamespace="uri:falcon:feed:0.1" xmlns="uri:falcon:feed:0.1" |
| xmlns:jaxb="http://java.sun.com/xml/ns/jaxb" jaxb:version="2.1"> |
| |
| <xs:annotation> |
| <xs:documentation> |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for |
| additional information regarding copyright ownership. |
| The ASF licenses this file to You under the Apache License, Version |
| 2.0 |
| (the "License"); you may not use this file |
| except in compliance with |
| the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in |
| writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| implied. |
| See the License |
| for the specific language governing permissions and |
| limitations under the License. |
| </xs:documentation> |
| <xs:appinfo> |
| <jaxb:schemaBindings> |
| <jaxb:package name="org.apache.falcon.entity.v0.feed"/> |
| </jaxb:schemaBindings> |
| </xs:appinfo> |
| </xs:annotation> |
| |
| <xs:element name="feed" type="feed"> |
| </xs:element> |
| <xs:complexType name="feed"> |
| <xs:annotation> |
| <xs:documentation> |
| name: A feed should have a unique name and this name is referenced |
| by processes as input or output feed. |
| tags: a feed specifies an optional list of comma separated tags |
| which is used for classification of data sets. |
| groups: a feed specifies a list of comma separated groups, |
| a group is a logical grouping of feeds and a group is said to be |
| available if all the feeds belonging to a group are available. |
| The frequency of all |
| the feed which belong to the same group |
| must be same. |
| availabilityFlag: specifies the name of a file which when |
| present/created |
| in a feeds data directory, the feed is |
| termed as available. ex: _SUCCESS, if |
| this element is ignored then Falcon would consider the presence of feed's |
| data directory as feed availability. |
| A feed has a |
| frequency and a periodicity which specifies the frequency by which |
| this feed is generated. ex: it can be generated every hour, every 5 minutes, daily, weekly etc. |
| valid frequency type for a feed are minutes, hours, days, months. |
| sla: A feed can have SLA and each SLA has two properties - slaLow and slaHigh. Both slaLow and slaHigh |
| are written using expressions like frequency. slaLow is intended to serve for alerting for feeds which |
| are in danger of missing their availability SLAs. slaHigh is intended to serve for reporting the feeds |
| which missed their SLAs. SLAs are relative to feed instance time. |
| </xs:documentation> |
| </xs:annotation> |
| <xs:sequence> |
| <xs:element type="KEY_VALUE_PAIR" name="tags" minOccurs="0"> |
| <xs:annotation> |
| <xs:documentation> |
| tags: a feed specifies an optional list of comma separated tags, |
| Key Value Pairs, separated by comma, |
| which is used for classification of processes. |
| Example: consumer=consumer@xyz.com, owner=producer@xyz.com, department=forecasting |
| </xs:documentation> |
| </xs:annotation> |
| </xs:element> |
| <xs:element type="partitions" name="partitions" minOccurs="0"/> |
| <xs:element type="group-type" name="groups" minOccurs="0"/> |
| <xs:element type="xs:string" name="availabilityFlag" minOccurs="0"/> |
| <xs:element type="frequency-type" name="frequency"/> |
| <xs:element type="sla" name="sla" minOccurs="0"/> |
| <xs:element name="timezone" minOccurs="0" default="UTC"> |
| <xs:simpleType> |
| <xs:annotation> |
| <xs:appinfo> |
| <jaxb:javaType name="java.util.TimeZone" parseMethod="java.util.TimeZone.getTimeZone" |
| printMethod="org.apache.falcon.entity.v0.SchemaHelper.getTimeZoneId"/> |
| </xs:appinfo> |
| </xs:annotation> |
| <xs:restriction base="xs:string"/> |
| </xs:simpleType> |
| </xs:element> |
| <xs:element type="late-arrival" name="late-arrival" minOccurs="0"/> |
| <xs:element type="clusters" name="clusters"/> |
| <xs:choice minOccurs="1" maxOccurs="1"> |
| <xs:element type="locations" name="locations"/> |
| <xs:element type="catalog-table" name="table"/> |
| </xs:choice> |
| <xs:element type="notification" name="notification" minOccurs="0"> |
| <xs:annotation> |
| <xs:documentation>Notification will help to notify the users about the finished status of Falcon |
| Instance. Currently Email type notification is supported and users must specify the receiver's |
| email address. |
| </xs:documentation> |
| </xs:annotation> |
| </xs:element> |
| <xs:element type="ACL" name="ACL"/> |
| <xs:element type="schema" name="schema"/> |
| <xs:element type="properties" name="properties" minOccurs="0"/> |
| <xs:element type="lifecycle" name="lifecycle" minOccurs="0" /> |
| </xs:sequence> |
| <xs:attribute type="IDENTIFIER" name="name" use="required"/> |
| <xs:attribute type="xs:string" name="description"/> |
| </xs:complexType> |
| <xs:complexType name="cluster"> |
| <xs:annotation> |
| <xs:documentation> |
| Feed references a cluster by it's name, before submitting a feed all the |
| referenced cluster should be submitted to Falcon. |
| type: specifies whether the |
| referenced cluster should be treated as a |
| source or target for a feed. |
| Validity of a feed on cluster specifies duration for which this feed is |
| valid on this cluster. |
| Retention specifies how long the feed is retained on this cluster and the |
| action to be taken on the feed after the expiry of retention period. |
| The retention limit is |
| specified by expression frequency(times), ex: if |
| feed should be retained for at least 6 hours then retention's limit="hours(6)". |
| The field partitionExp contains |
| partition tags. Number of partition tags has to be equal to number of partitions specified in feed |
| schema. |
| A partition tag can be a wildcard(*), a static string or |
| an expression. Atleast one of the strings has to be an expression. |
| </xs:documentation> |
| </xs:annotation> |
| <xs:sequence> |
| <xs:element type="validity" name="validity"/> |
| <xs:element type="retention" name="retention"/> |
| <xs:element type="sla" name="sla" minOccurs="0" maxOccurs="1"/> |
| <xs:element type="import" name="import" minOccurs="0" maxOccurs="1"/> |
| <xs:element type="export" name="export" minOccurs="0" maxOccurs="1"/> |
| <xs:choice minOccurs="0" maxOccurs="1"> |
| <xs:element type="locations" name="locations" minOccurs="0"/> |
| <xs:element type="catalog-table" name="table"/> |
| </xs:choice> |
| <xs:element type="lifecycle" name="lifecycle" minOccurs="0" /> |
| </xs:sequence> |
| <xs:attribute type="IDENTIFIER" name="name" use="required"/> |
| <xs:attribute type="cluster-type" name="type" use="optional"/> |
| <xs:attribute type="xs:string" name="partition" use="optional"/> |
| <xs:attribute type="frequency-type" name="delay" use="optional" /> |
| </xs:complexType> |
| <xs:complexType name="partitions"> |
| <xs:annotation> |
| <xs:documentation> |
| A list of partition, which is the logical partition of a feed and this |
| is maintained in Hcatalog registry. |
| </xs:documentation> |
| </xs:annotation> |
| <xs:sequence> |
| <xs:element type="partition" name="partition" maxOccurs="unbounded" minOccurs="0"/> |
| </xs:sequence> |
| </xs:complexType> |
| <xs:complexType name="schema"> |
| <xs:annotation> |
| <xs:documentation>A schema specifies the location of a schema file |
| for a feed and the provider of schema like protobuf, thrift etc. |
| </xs:documentation> |
| </xs:annotation> |
| <xs:attribute type="xs:string" name="location" use="required"/> |
| <xs:attribute type="xs:string" name="provider" use="required"/> |
| </xs:complexType> |
| <xs:complexType name="properties"> |
| <xs:annotation> |
| <xs:documentation> |
| A list of name-value pair of property. |
| </xs:documentation> |
| </xs:annotation> |
| <xs:sequence> |
| <xs:element type="property" name="property" maxOccurs="unbounded" minOccurs="0"/> |
| </xs:sequence> |
| </xs:complexType> |
| <xs:complexType name="validity"> |
| <xs:annotation> |
| <xs:documentation> |
| A validity has a start, which is the validity start date and end the |
| validity |
| end date. ex: start="2011-11-01T00:00Z" in TZ format. |
| timezone can be UTC, |
| GMT. |
| Processes referring this feed would consider the validity period for |
| validation. |
| </xs:documentation> |
| </xs:annotation> |
| <xs:attribute type="date-time-type" name="start" use="required"/> |
| <xs:attribute type="date-time-type" name="end" use="required"/> |
| </xs:complexType> |
| <xs:complexType name="sla"> |
| <xs:annotation> |
| <xs:documentation> |
| sla has two properties - slaLow and slaHigh. Both slaLow and slaHigh |
| are written using expressions like frequency. slaLow is intended to serve for alerting for feeds which |
| are in danger of missing their availability SLAs. slaHigh is intended to serve for reporting the feeds |
| which missed their SLAs. SLAs are relative to feed instance time. |
| </xs:documentation> |
| </xs:annotation> |
| <xs:attribute type="frequency-type" name="slaLow" use="required"/> |
| <xs:attribute type="frequency-type" name="slaHigh" use="required"/> |
| </xs:complexType> |
| <xs:complexType name="locations"> |
| <xs:annotation> |
| <xs:documentation> |
| A list of locations on the file system. |
| </xs:documentation> |
| </xs:annotation> |
| <xs:choice maxOccurs="unbounded" minOccurs="0"> |
| <xs:element type="location" name="location"/> |
| </xs:choice> |
| </xs:complexType> |
| <xs:complexType name="late-arrival"> |
| <xs:annotation> |
| <xs:documentation> |
| late-arrival specifies the cut-off period till which the feed is |
| expected to arrive late and should be honored be processes referring |
| to it as input |
| feed by rerunning the instances in case |
| the data arrives late with in a cut-off period. |
| The cut-off period is specified by expression |
| frequency(times), ex: if the feed |
| can arrive late |
| upto 8 hours then late-arrival's cut-off="hours(8)" |
| </xs:documentation> |
| </xs:annotation> |
| <xs:attribute type="frequency-type" name="cut-off" use="required"/> |
| </xs:complexType> |
| <xs:complexType name="property"> |
| <xs:annotation> |
| <xs:documentation> |
| A key-value pair, which are propagated to the |
| workflow engine. |
| </xs:documentation> |
| </xs:annotation> |
| <xs:attribute type="xs:string" name="name" use="required"/> |
| <xs:attribute type="xs:string" name="value" use="required"/> |
| </xs:complexType> |
| <xs:complexType name="clusters"> |
| <xs:annotation> |
| <xs:documentation> |
| A list of clusters. |
| </xs:documentation> |
| </xs:annotation> |
| <xs:sequence> |
| <xs:element type="cluster" name="cluster" maxOccurs="unbounded" minOccurs="1"> |
| </xs:element> |
| </xs:sequence> |
| </xs:complexType> |
| <xs:complexType name="retention"> |
| <xs:attribute type="retention-type" name="type" default="instance"/> |
| <xs:attribute type="frequency-type" name="limit" use="required"/> |
| <xs:attribute type="action-type" name="action" use="required"/> |
| </xs:complexType> |
| <xs:simpleType name="retention-type"> |
| <xs:restriction base="xs:string"> |
| <xs:enumeration value="instance"/> |
| <!-- <xs:enumeration value="age" /> --> |
| </xs:restriction> |
| </xs:simpleType> |
| <xs:complexType name="location"> |
| <xs:annotation> |
| <xs:documentation> |
| location specifies the type of location like data, meta, stats |
| and the corresponding paths for them. |
| A feed should at least define the location for type |
| data, which |
| specifies the HDFS path pattern where the feed is generated |
| periodically. ex: type="data" path="/projects/TrafficHourly/${YEAR}-${MONTH}-${DAY}/traffic" |
| </xs:documentation> |
| </xs:annotation> |
| <xs:attribute type="location-type" name="type" use="required"/> |
| <xs:attribute type="non-empty-string" name="path" use="required"/> |
| </xs:complexType> |
| <xs:complexType name="partition"> |
| <xs:attribute type="IDENTIFIER" name="name" use="required"/> |
| </xs:complexType> |
| <xs:complexType name="notification"> |
| <xs:annotation> |
| <xs:documentation> |
| Notification specifies the "type" of notification to be used to send notification. |
| Currently email based notification type is supported and user can specify the comma |
| separated email address with "to" property. |
| e.g: type="email" to="falcon@localhost,hive@localhost" |
| "limit" property in notification will help to set the frequency of email notification |
| in case of Falcon instance failure. Incase of feed entity limit="attempt" is only supported |
| as there is no retry element. |
| </xs:documentation> |
| </xs:annotation> |
| <xs:attribute name="type" use="required"> |
| <xs:simpleType> |
| <xs:restriction base="xs:string"> |
| <xs:enumeration value="email"/> |
| </xs:restriction> |
| </xs:simpleType> |
| </xs:attribute> |
| <xs:attribute name="level" use="optional"> |
| <xs:simpleType> |
| <xs:restriction base="xs:string"> |
| <xs:enumeration value="attempt"/> |
| <xs:enumeration value="instance"/> |
| </xs:restriction> |
| </xs:simpleType> |
| </xs:attribute> |
| <xs:attribute type="xs:string" name="to" use="required"/> |
| </xs:complexType> |
| <xs:complexType name="ACL"> |
| <xs:annotation> |
| <xs:documentation> |
| Access control list for this feed. |
| </xs:documentation> |
| </xs:annotation> |
| <xs:attribute type="xs:string" name="owner"/> |
| <xs:attribute type="xs:string" name="group"/> |
| <xs:attribute type="xs:string" name="permission" default="*"/> |
| </xs:complexType> |
| <xs:simpleType name="action-type"> |
| <xs:restriction base="xs:string"> |
| <xs:annotation> |
| <xs:documentation> |
| action type specifies the action that should be taken on a feed |
| when the retention period of a feed expires on a cluster, |
| the valid |
| actions are |
| archive, delete, chown and chmod. |
| </xs:documentation> |
| </xs:annotation> |
| <xs:enumeration value="archive"/> |
| <xs:enumeration value="delete"/> |
| <xs:enumeration value="chown"/> |
| <xs:enumeration value="chmod"/> |
| </xs:restriction> |
| </xs:simpleType> |
| <xs:complexType name="lifecycle"> |
| <xs:annotation> |
| <xs:documentation> |
| Lifecycle of the feed consists of various stages. For example typical stages of a feed are import, |
| replication, archival, retention and export. All these stages together are called lifecycle of a feed. |
| </xs:documentation> |
| </xs:annotation> |
| |
| <xs:all> |
| <xs:element type="retention-stage" name="retention-stage" minOccurs="0"></xs:element> |
| </xs:all> |
| |
| </xs:complexType> |
| |
| <xs:simpleType name="cluster-type"> |
| <xs:annotation> |
| <xs:documentation> |
| The clusters on feed can be either defined as source or target, |
| a feed |
| should at least have one source cluster defined. |
| the target clusters |
| are used for |
| replication of feed. |
| </xs:documentation> |
| </xs:annotation> |
| <xs:restriction base="xs:string"> |
| <xs:enumeration value="source"/> |
| <xs:enumeration value="target"/> |
| </xs:restriction> |
| </xs:simpleType> |
| <xs:simpleType name="location-type"> |
| <xs:restriction base="xs:string"> |
| <xs:enumeration value="data"/> |
| <xs:enumeration value="stats"/> |
| <xs:enumeration value="meta"/> |
| <xs:enumeration value="tmp"/> |
| </xs:restriction> |
| </xs:simpleType> |
| <xs:simpleType name="IDENTIFIER"> |
| <xs:restriction base="xs:string"> |
| <xs:pattern value="(([a-zA-Z]([\-a-zA-Z0-9])*){1,39})"/> |
| </xs:restriction> |
| </xs:simpleType> |
| <xs:simpleType name="frequency-type"> |
| <xs:annotation> |
| <xs:appinfo> |
| <jaxb:javaType name="org.apache.falcon.entity.v0.Frequency" |
| parseMethod="org.apache.falcon.entity.v0.Frequency.fromString" |
| printMethod="org.apache.falcon.entity.v0.Frequency.toString"/> |
| </xs:appinfo> |
| </xs:annotation> |
| <xs:restriction base="xs:string"> |
| <xs:pattern value="(minutes|hours|days|months)\([1-9]\d*\)"/> |
| </xs:restriction> |
| </xs:simpleType> |
| <xs:simpleType name="date-time-type"> |
| <xs:annotation> |
| <xs:appinfo> |
| <jaxb:javaType name="java.util.Date" parseMethod="org.apache.falcon.entity.v0.SchemaHelper.parseDateUTC" |
| printMethod="org.apache.falcon.entity.v0.SchemaHelper.formatDateUTC"/> |
| </xs:appinfo> |
| </xs:annotation> |
| <xs:restriction base="xs:string"> |
| <xs:pattern |
| value="((19|20)\d\d[- /.](0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])T([0-1][0-9]|2[0-3]):([0-5][0-9]))Z"/> |
| </xs:restriction> |
| </xs:simpleType> |
| <xs:simpleType name="group-type"> |
| <xs:restriction base="xs:string"> |
| <xs:pattern value="(\w+(,\w+)*)"/> |
| </xs:restriction> |
| </xs:simpleType> |
| <xs:simpleType name="KEY_VALUE_PAIR"> |
| <xs:restriction base="xs:string"> |
| <xs:pattern value="([\w_]+=[^,]+)?([,]?[ ]*[\w_]+=[^,]+)*"/> |
| </xs:restriction> |
| </xs:simpleType> |
| <xs:complexType name="catalog-table"> |
| <xs:annotation> |
| <xs:documentation> |
| catalog specifies the uri of a Hive table along with the partition spec. |
| uri="catalog:$database:$table#(partition-key=partition-value);+" |
| Example: catalog:logs-db:clicks#ds=${YEAR}-${MONTH}-${DAY} |
| </xs:documentation> |
| </xs:annotation> |
| <xs:attribute type="xs:string" name="uri" use="required"/> |
| </xs:complexType> |
| <xs:simpleType name="non-empty-string"> |
| <xs:restriction base="xs:string"> |
| <xs:minLength value="1"/> |
| </xs:restriction> |
| </xs:simpleType> |
| <xs:complexType name="import"> |
| <xs:sequence> |
| <xs:element type="datasource" name="source"/> |
| <xs:element type="arguments" name="arguments" minOccurs="0"/> |
| </xs:sequence> |
| </xs:complexType> |
| <xs:complexType name="export"> |
| <xs:sequence> |
| <xs:element type="datasource" name="target"/> |
| <xs:element type="arguments" name="arguments" minOccurs="0"/> |
| </xs:sequence> |
| </xs:complexType> |
| <xs:complexType name="datasource"> |
| <xs:annotation> |
| <xs:documentation> |
| Specifies the source entity name from which data can be imported or exported. |
| This can be Database or other data source types in the future. The connection |
| and authentication details of the data source are defined in the Datasource |
| entity. |
| Table name specifies the table to import or export depending on the action type. |
| Extract type specifies a extraction method (full or incremental). |
| DeltaColumn specifies the column name on source databbase table |
| to identify the new data since the last extraction. |
| Merge type specifies how the data will be organized on Hadoop. |
| The supported types are snapshot (as in a particular time) or append |
| (as in timeseries partitions). |
| Load type specifies if new rows are inserted (load type=insertallowed) into |
| the database table or updated (load type=updateonly). If updateonly load type |
| is specified, then update columns need to be passed via the arguments. |
| Fields can be specified as includes or excludes of fields. If exlusion list |
| is specified, all column except the ones specified will not be imported or exported. |
| If inclusion list is specified, only the specified columns are exported or imported. |
| </xs:documentation> |
| </xs:annotation> |
| <xs:sequence> |
| <xs:choice minOccurs="1" maxOccurs="1"> |
| <xs:element type="extract" name="extract"/> |
| <xs:element type="load" name="load"/> |
| </xs:choice> |
| <xs:element type="fields-type" name="fields" minOccurs="0" maxOccurs="1"/> |
| </xs:sequence> |
| <xs:attribute type="non-empty-string" name="name" use="required"/> |
| <xs:attribute type="non-empty-string" name="tableName" use="required"/> |
| </xs:complexType> |
| <xs:complexType name="extract"> |
| <xs:sequence> |
| <xs:element type="xs:string" name="deltacolumn" minOccurs="0" maxOccurs="1"/> |
| <xs:element type="merge-type" name="mergepolicy" minOccurs="1" maxOccurs="1"/> |
| </xs:sequence> |
| <xs:attribute type="extract-method" name="type" use="required"/> |
| </xs:complexType> |
| <xs:complexType name="load"> |
| <xs:attribute type="load-method" name="type" use="required"/> |
| </xs:complexType> |
| <xs:simpleType name="extract-method"> |
| <xs:restriction base="xs:string"> |
| <xs:enumeration value="full"/> |
| <xs:enumeration value="incremental"/> |
| </xs:restriction> |
| </xs:simpleType> |
| <xs:simpleType name="load-method"> |
| <xs:restriction base="xs:string"> |
| <xs:enumeration value="updateonly"/> |
| <xs:enumeration value="allowinsert"/> |
| </xs:restriction> |
| </xs:simpleType> |
| |
| <xs:simpleType name="merge-type"> |
| <xs:restriction base="xs:string"> |
| <xs:enumeration value="snapshot"/> |
| <xs:enumeration value="append"/> |
| </xs:restriction> |
| </xs:simpleType> |
| <xs:complexType name="fields-type"> |
| <xs:annotation> |
| <xs:documentation> |
| Specifies either an include or exclude fields list. If include field list is specified, only |
| the specified fields will be imported. If exclude field list is specified, all fields except |
| the ones specified will be imported from datasource to HDFS. |
| </xs:documentation> |
| </xs:annotation> |
| <xs:choice minOccurs="1" maxOccurs="1"> |
| <xs:element type="field-include-exclude" name="includes"/> |
| <xs:element type="field-include-exclude" name="excludes"/> |
| </xs:choice> |
| </xs:complexType> |
| <xs:complexType name="field-include-exclude"> |
| <xs:sequence> |
| <xs:element type="xs:string" name="field" maxOccurs="unbounded" minOccurs="1"/> |
| </xs:sequence> |
| </xs:complexType> |
| <xs:complexType name="arguments"> |
| <xs:annotation> |
| <xs:documentation> |
| A list of name-value pair of extra arguments to be passed to the concrete implementation. |
| </xs:documentation> |
| </xs:annotation> |
| <xs:sequence> |
| <xs:element type="argument" name="argument" maxOccurs="unbounded" minOccurs="0"/> |
| </xs:sequence> |
| </xs:complexType> |
| <xs:complexType name="argument"> |
| <xs:annotation> |
| <xs:documentation> |
| A key-value pair, which are used while invoking |
| ingestion engines. |
| </xs:documentation> |
| </xs:annotation> |
| <xs:attribute type="xs:string" name="name" use="required"/> |
| <xs:attribute type="xs:string" name="value" use="required"/> |
| </xs:complexType> |
| <xs:complexType name="retention-stage"> |
| <xs:annotation> |
| <xs:documentation> |
| Retention stage is the new way to define retention for a feed using feed lifecycle feature. Retention |
| has a configurable policy which does the validation and the real execution through workflow engine. |
| This method of specifying retention gives you more control like using different queue name, priority |
| and execution-order for retention than other lifecycle stages of feed like replication. |
| </xs:documentation> |
| </xs:annotation> |
| <xs:all> |
| <xs:element type="non-empty-string" name="policy" minOccurs="0" maxOccurs="1"></xs:element> |
| <xs:element type="frequency-type" name="frequency" minOccurs="0" maxOccurs="1"></xs:element> |
| <xs:element type="xs:string" name="queue" minOccurs="0" maxOccurs="1"></xs:element> |
| <xs:element type="xs:string" name="priority" minOccurs="0" maxOccurs="1"></xs:element> |
| <xs:element type="properties" name="properties" minOccurs="0" maxOccurs="1"></xs:element> |
| </xs:all> |
| </xs:complexType> |
| </xs:schema> |
