Package net.solarnetwork.node.service.support

Class JsonHttpClientSupport

java.lang.Object

net.solarnetwork.service.support.BasicIdentifiable

net.solarnetwork.node.service.support.BaseIdentifiable

net.solarnetwork.node.service.support.HttpClientSupport

net.solarnetwork.node.service.support.JsonHttpClientSupport

All Implemented Interfaces:

net.solarnetwork.service.Identifiable

Direct Known Subclasses:

UserMetadataService

public abstract class JsonHttpClientSupport
extends HttpClientSupport

An abstract class to support HTTP based services that use JSON.

The configurable properties of this class are:

compress

Flag to compress the HTTP body content, defaults to false.

objectMapper

The ObjectMapper to marshall/unmarshall objects to/from JSON with.

Version:

1.3

Author:

matt

Field Summary

Fields

Modifier and Type	Field	Description
static final String	JSON_MIME_TYPE	The JSON MIME type.

Fields inherited from class net.solarnetwork.node.service.support.HttpClientSupport

ACCEPT_JSON, ACCEPT_TEXT, DEFAULT_CONNECTION_TIMEOUT, HTTP_METHOD_GET, HTTP_METHOD_POST, log

Fields inherited from interface net.solarnetwork.service.Identifiable

GROUP_UID_PROPERTY, UID_PROPERTY

Constructor Summary

Constructors

Constructor	Description
JsonHttpClientSupport()

Method Summary

Modifier and Type	Method	Description
protected final InputStream	doJson(String url, String method, Object data)	Perform a JSON HTTP request.
protected final InputStream	doJson(String url, String method, Object data, Consumer<URLConnection> connectionCustomizer)	Perform a JSON HTTP request.
protected <T> Collection<T>	extractCollectionResponseData(InputStream in, Class<T> dataType)	Parse a standard Response HTTP response and return the data array as a collection of objects of the provided type.
protected <T> Collection<T>	extractFilterResultsCollectionResponseData(InputStream in, Class<T> dataType)	Parse a standard Response HTTP response and return the data.results array as objects of the provided type.
protected <T> T	extractResponseData(InputStream in, Class<T> dataType)	Parse a standard Response HTTP response and return the data object as the provided type.
final com.fasterxml.jackson.databind.ObjectMapper	getObjectMapper()	Get the JSON mapper.
final boolean	isCompress()	Get the compress flag.
protected final InputStream	jsonGET(String url)	Perform a JSON GET HTTP request.
protected final InputStream	jsonGET(String url, Consumer<URLConnection> connectionCustomizer)	Perform a JSON GET HTTP request.
protected final InputStream	jsonPOST(String url, Object data)	Perform a JSON POST HTTP request.
protected final InputStream	jsonPOST(String url, Object data, Consumer<URLConnection> connectionCustomizer)	Perform a JSON POST HTTP request.
final void	setCompress(boolean compress)	Set the compress flag.
final void	setObjectMapper(com.fasterxml.jackson.databind.ObjectMapper objectMapper)	Set the JSON mapper.
protected void	verifyResponseSuccess(InputStream in)	Test for a successful standard Response HTTP response.

Methods inherited from class net.solarnetwork.node.service.support.HttpClientSupport

appendXWWWFormURLEncodedValue, getConnectionTimeout, getIdentityService, getInputStreamFromURLConnection, getSslService, getUnicodeReaderFromURLConnection, getURLConnection, getURLConnection, getURLConnection, postXWWWFormURLEncodedData, postXWWWFormURLEncodedDataForString, setConnectionTimeout, setIdentityService, setSslService, setupTokenAuthorization, xWWWFormURLEncoded

Methods inherited from class net.solarnetwork.node.service.support.BaseIdentifiable

baseIdentifiableSettings, baseIdentifiableSettings, getExpressionServices, getPlaceholderService, populateExpressionDatumProperties, resolvePlaceholders, resolvePlaceholders, setExpressionServices, setPlaceholderService

Methods inherited from class net.solarnetwork.service.support.BasicIdentifiable

basicIdentifiableMetadataSettings, basicIdentifiableSettings, basicIdentifiableSettings, basicIdentifiableSettings, doubleMetadataValue, getDisplayName, getGroupUid, getGroupUID, getMessageSource, getMetadata, getMetadataCount, getUid, getUID, integerMetadataValue, metadataValue, numberMetadataValue, saveMetadataValue, saveMetadataValue, setDisplayName, setGroupUid, setGroupUID, setMessageSource, setMetadata, setMetadataCount, setUid, setUID, smartMetadataValue

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.solarnetwork.service.Identifiable

getDisplayName, getGroupUid, getUid

Field Details

JSON_MIME_TYPE

public static final String JSON_MIME_TYPE

The JSON MIME type.

See Also:

• Constant Field Values

Constructor Details

JsonHttpClientSupport

public JsonHttpClientSupport()

Method Details

doJson

protected final InputStream doJson(String url,
 String method,
 Object data)
                            throws IOException

Perform a JSON HTTP request.

Parameters:

url - the URL to make the request to

method - the HTTP method, e.g. HttpClientSupport.HTTP_METHOD_GET

data - the optional data to marshall to JSON and upload as the request content

Returns:

the InputStream for the HTTP response

Throws:

IOException - if any IO error occurs

doJson

protected final InputStream doJson(String url,
 String method,
 Object data,
 Consumer<URLConnection> connectionCustomizer)
                            throws IOException

Perform a JSON HTTP request.

Parameters:

url - the URL to make the request to

method - the HTTP method, e.g. HttpClientSupport.HTTP_METHOD_GET

data - the optional data to marshall to JSON and upload as the request content

connectionCustomizer - an optional consumer to customize the created URL connection, before it is opened

Returns:

the InputStream for the HTTP response

Throws:

IOException - if any IO error occurs

Since:

1.3

jsonGET

protected final InputStream jsonGET(String url)
                             throws IOException

Perform a JSON GET HTTP request.

Parameters:

url - the URL to GET

Returns:

the HTTP response InputStream

Throws:

IOException - if any IO error occurs

jsonGET

protected final InputStream jsonGET(String url,
 Consumer<URLConnection> connectionCustomizer)
                             throws IOException

Perform a JSON GET HTTP request.

Parameters:

url - the URL to GET

connectionCustomizer - an optional consumer to customize the created URL connection, before it is opened

Returns:

the HTTP response InputStream

Throws:

IOException - if any IO error occurs

Since:

1.3

jsonPOST

protected final InputStream jsonPOST(String url,
 Object data)
                              throws IOException

Perform a JSON POST HTTP request.

Parameters:

url - the URL to POST

data - the object to marshall into JSON

Returns:

the HTTP response InputStream

Throws:

IOException - if any IO error occurs

jsonPOST

protected final InputStream jsonPOST(String url,
 Object data,
 Consumer<URLConnection> connectionCustomizer)
                              throws IOException

Perform a JSON POST HTTP request.

Parameters:

url - the URL to POST

data - the object to marshall into JSON

connectionCustomizer - an optional consumer to customize the created URL connection, before it is opened

Returns:

the HTTP response InputStream

Throws:

IOException - if any IO error occurs

Since:

1.3

extractResponseData

protected <T> T extractResponseData(InputStream in,
 Class<T> dataType)
                             throws net.solarnetwork.service.RemoteServiceException,
IOException

Parse a standard Response HTTP response and return the data object as the provided type.

Type Parameters:

T - the element type

Parameters:

in - the InputStream to read, which will be closed before returning from this method

dataType - the type of object to extract from the response

Returns:

the extracted object, or null

Throws:

net.solarnetwork.service.RemoteServiceException - if the response does not include the success flag

IOException - if any IO error occurs

extractCollectionResponseData

protected <T> Collection<T> extractCollectionResponseData(InputStream in,
 Class<T> dataType)
                                                   throws net.solarnetwork.service.RemoteServiceException,
IOException

Parse a standard Response HTTP response and return the data array as a collection of objects of the provided type.

Type Parameters:

T - the collection element type

Parameters:

in - the InputStream to read, which will be closed before returning from this method

dataType - the type of object to extract from the response

Returns:

the extracted object, or null

Throws:

net.solarnetwork.service.RemoteServiceException - if the response does not include the success flag

IOException - if any IO error occurs

Since:

1.1

extractFilterResultsCollectionResponseData

protected <T> Collection<T> extractFilterResultsCollectionResponseData(InputStream in,
 Class<T> dataType)
                                                                throws net.solarnetwork.service.RemoteServiceException,
IOException

Parse a standard Response HTTP response and return the data.results array as objects of the provided type.

Type Parameters:

T - the collection element type

Parameters:

in - the InputStream to read, which will be closed before returning from this method

dataType - the type of object to extract from the response

Returns:

the extracted objects, or null

Throws:

net.solarnetwork.service.RemoteServiceException - if the response does not include the success flag

IOException - if any IO error occurs

Since:

1.2

verifyResponseSuccess

protected void verifyResponseSuccess(InputStream in)
                              throws net.solarnetwork.service.RemoteServiceException,
IOException

Test for a successful standard Response HTTP response.

Parameters:

in - the InputStream to read, which will be closed before returning from this method

Throws:

net.solarnetwork.service.RemoteServiceException - if the response does not include the success flag

IOException - if any IO error occurs

getObjectMapper

public final com.fasterxml.jackson.databind.ObjectMapper getObjectMapper()

Get the JSON mapper.

Returns:

the mapper

setObjectMapper

public final void setObjectMapper(com.fasterxml.jackson.databind.ObjectMapper objectMapper)

Set the JSON mapper.

Parameters:

objectMapper - the mapper

isCompress

public final boolean isCompress()

Get the compress flag.

Returns:

true to compress HTTP body content with gzip

setCompress

public final void setCompress(boolean compress)

Set the compress flag.

Parameters:

compress - true to compress HTTP body content with gzip