Chapter 90. Dropbox Component Available as of Camel version 2.14 The dropbox: component allows you to treat Dropbox remote folders as a producer or consumer of messages. Using the Dropbox Java Core API (reference version for this component is 1.7.x), this camel component has the following features: As a consumer, download files and search files by queries As a producer, download files, move files between remote directories, delete files/dir, upload files and search files by queries Maven users will need to add the following dependency to their pom.xml for this component: <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-dropbox</artifactId> <version>x.x.x</version> <!-- use the same version as your Camel core version --> </dependency> 90.1. URI format Where operation is the specific action (typically is a CRUD action) to perform on Dropbox remote folder. 90.2. Operations Operation Description del deletes files or directories on Dropbox get download files from Dropbox move move files from folders on Dropbox put upload files on Dropbox search search files on Dropbox based on string queries Operations require additional options to work, some are mandatory for the specific operation. 90.3. Options In order to work with Dropbox API you need to obtain an accessToken and a clientIdentifier. You can refer to the Dropbox documentation that explains how to get them. The Dropbox component has no options. The Dropbox endpoint is configured using URI syntax: with the following path and query parameters: 90.3.1. Path Parameters (1 parameters): Name Description Default Type operation Required The specific action (typically is a CRUD action) to perform on Dropbox remote folder. DropboxOperation 90.3.2. Query Parameters (12 parameters): Name Description Default Type accessToken (common) Required The access token to make API requests for a specific Dropbox user String client (common) To use an existing DbxClient instance as DropBox client. DbxClientV2 clientIdentifier (common) Name of the app registered to make API requests String localPath (common) Optional folder or file to upload on Dropbox from the local filesystem. If this option has not been configured then the message body is used as the content to upload. String newRemotePath (common) Destination file or folder String query (common) A space-separated list of sub-strings to search for. A file matches only if it contains all the sub-strings. If this option is not set, all files will be matched. String remotePath (common) Original file or folder to move String uploadMode (common) Which mode to upload. in case of add the new file will be renamed if a file with the same name already exists on dropbox. in case of force if a file with the same name already exists on dropbox, this will be overwritten. DropboxUploadMode bridgeErrorHandler (consumer) Allows for bridging the consumer to the Camel routing Error Handler, which mean any exceptions occurred while the consumer is trying to pickup incoming messages, or the likes, will now be processed as a message and handled by the routing Error Handler. By default the consumer will use the org.apache.camel.spi.ExceptionHandler to deal with exceptions, that will be logged at WARN or ERROR level and ignored. false boolean exceptionHandler (consumer) To let the consumer use a custom ExceptionHandler. Notice if the option bridgeErrorHandler is enabled then this option is not in use. By default the consumer will deal with exceptions, that will be logged at WARN or ERROR level and ignored. ExceptionHandler exchangePattern (consumer) Sets the exchange pattern when the consumer creates an exchange. ExchangePattern synchronous (advanced) Sets whether synchronous processing should be strictly used, or Camel is allowed to use asynchronous processing (if supported). false boolean 90.4. Spring Boot Auto-Configuration The component supports 2 options, which are listed below. Name Description Default Type camel.component.dropbox.enabled Enable dropbox component true Boolean camel.component.dropbox.resolve-property-placeholders Whether the component should resolve property placeholders on itself when starting. Only properties which are of String type can use property placeholders. true Boolean 90.5. Del operation Delete files on Dropbox. Works only as Camel producer. Below are listed the options for this operation: Property Mandatory Description remotePath true Folder or file to delete on Dropbox 90.5.1. Samples from("direct:start") .to("dropbox://del?accessToken=XXX&clientIdentifier=XXX&remotePath=/root/folder1") .to("mock:result"); from("direct:start") .to("dropbox://del?accessToken=XXX&clientIdentifier=XXX&remotePath=/root/folder1/file1.tar.gz") .to("mock:result"); 90.5.2. Result Message Headers The following headers are set on message result: Property Value DELETED_PATH name of the path deleted on dropbox 90.5.3. Result Message Body The following objects are set on message body result: Object type Description String name of the path deleted on dropbox 90.6. Get (download) operation Download files from Dropbox. Works as Camel producer or Camel consumer. Below are listed the options for this operation: Property Mandatory Description remotePath true Folder or file to download from Dropbox 90.6.1. Samples from("direct:start") .to("dropbox://get?accessToken=XXX&clientIdentifier=XXX&remotePath=/root/folder1/file1.tar.gz") .to("file:///home/kermit/?fileName=file1.tar.gz"); from("direct:start") .to("dropbox://get?accessToken=XXX&clientIdentifier=XXX&remotePath=/root/folder1") .to("mock:result"); from("dropbox://get?accessToken=XXX&clientIdentifier=XXX&remotePath=/root/folder1") .to("file:///home/kermit/"); 90.6.2. Result Message Headers The following headers are set on message result: Property Value DOWNLOADED_FILE in case of single file download, path of the remote file downloaded DOWNLOADED_FILES in case of multiple files download, path of the remote files downloaded 90.6.3. Result Message Body The following objects are set on message body result: Object type Description ByteArrayOutputStream in case of single file download, stream representing the file downloaded Map<String, ByteArrayOutputStream> in case of multiple files download, a map with as key the path of the remote file downloaded and as value the stream representing the file downloaded 90.7. Move operation Move files on Dropbox between one folder to another. Works only as Camel producer. Below are listed the options for this operation: Property Mandatory Description remotePath true Original file or folder to move newRemotePath true Destination file or folder 90.7.1. Samples from("direct:start") .to("dropbox://move?accessToken=XXX&clientIdentifier=XXX&remotePath=/root/folder1&newRemotePath=/root/folder2") .to("mock:result"); 90.7.2. Result Message Headers The following headers are set on message result: Property Value MOVED_PATH name of the path moved on dropbox 90.7.3. Result Message Body The following objects are set on message body result: Object type Description String name of the path moved on dropbox 90.8. Put (upload) operation Upload files on Dropbox. Works as Camel producer. Below are listed the options for this operation: Property Mandatory Description uploadMode true add or force this option specifies how a file should be saved on dropbox: in case of "add" the new file will be renamed if a file with the same name already exists on dropbox. In case of "force" if a file with the same name already exists on dropbox, this will be overwritten. localPath false Folder or file to upload on Dropbox from the local filesystem. If this option has been configured then it takes precedence over uploading as a single file with content from the Camel message body (message body is converted into a byte array). remotePath false Folder destination on Dropbox. If the property is not set, the component will upload the file on a remote path equal to the local path. With Windows or without an absolute localPath you may run into an exception like the following: Caused by: java.lang.IllegalArgumentException: 'path': bad path: must start with "/": "C:/My/File" OR Caused by: java.lang.IllegalArgumentException: 'path': bad path: must start with "/": "MyFile" 90.8.1. Samples from("direct:start").to("dropbox://put?accessToken=XXX&clientIdentifier=XXX&uploadMode=add&localPath=/root/folder1") .to("mock:result"); from("direct:start").to("dropbox://put?accessToken=XXX&clientIdentifier=XXX&uploadMode=add&localPath=/root/folder1&remotePath=/root/folder2") .to("mock:result"); And to upload a single file with content from the message body from("direct:start") .setHeader(DropboxConstants.HEADER_PUT_FILE_NAME, constant("myfile.txt")) .to("dropbox://put?accessToken=XXX&clientIdentifier=XXX&uploadMode=add&remotePath=/root/folder2") .to("mock:result"); The name of the file can be provided in the header DropboxConstants.HEADER_PUT_FILE_NAME or Exchange.FILE_NAME in that order of precedence. If no header has been provided then the message id (uuid) is used as the file name. 90.8.2. Result Message Headers The following headers are set on message result: Property Value UPLOADED_FILE in case of single file upload, path of the remote path uploaded UPLOADED_FILES in case of multiple files upload, string with the remote paths uploaded 90.8.3. Result Message Body The following objects are set on message body result: Object type Description String in case of single file upload, result of the upload operation, OK or KO Map<String, DropboxResultCode> in case of multiple files upload, a map with as key the path of the remote file uploaded and as value the result of the upload operation, OK or KO 90.9. Search operation Search inside a remote Dropbox folder including its sub directories. Works as Camel producer and as Camel consumer. Below are listed the options for this operation: Property Mandatory Description remotePath true Folder on Dropbox where to search in. query true A space-separated list of sub-strings to search for. A file matches only if it contains all the sub-strings. If this option is not set, all files will be matched. The query is required to be provided in either the endpoint configuration or as a header CamelDropboxQuery on the Camel message. 90.9.1. Samples from("dropbox://search?accessToken=XXX&clientIdentifier=XXX&remotePath=/XXX&query=XXX") .to("mock:result"); from("direct:start") .setHeader("CamelDropboxQuery", constant("XXX")) .to("dropbox://search?accessToken=XXX&clientIdentifier=XXX&remotePath=/XXX") .to("mock:result"); 90.9.2. Result Message Headers The following headers are set on message result: Property Value FOUNDED_FILES list of file path founded 90.9.3. Result Message Body The following objects are set on message body result: Object type Description List<DbxEntry> list of file path founded. For more information on this object refer to Dropbox documentation,

Commands:
<dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-dropbox</artifactId> <version>x.x.x</version> <!-- use the same version as your Camel core version --> </dependency>
dropbox://[operation]?[options]
dropbox:operation
from("direct:start") .to("dropbox://del?accessToken=XXX&clientIdentifier=XXX&remotePath=/root/folder1") .to("mock:result"); from("direct:start") .to("dropbox://del?accessToken=XXX&clientIdentifier=XXX&remotePath=/root/folder1/file1.tar.gz") .to("mock:result");
from("direct:start") .to("dropbox://get?accessToken=XXX&clientIdentifier=XXX&remotePath=/root/folder1/file1.tar.gz") .to("file:///home/kermit/?fileName=file1.tar.gz"); from("direct:start") .to("dropbox://get?accessToken=XXX&clientIdentifier=XXX&remotePath=/root/folder1") .to("mock:result"); from("dropbox://get?accessToken=XXX&clientIdentifier=XXX&remotePath=/root/folder1") .to("file:///home/kermit/");
from("direct:start") .to("dropbox://move?accessToken=XXX&clientIdentifier=XXX&remotePath=/root/folder1&newRemotePath=/root/folder2") .to("mock:result");
from("direct:start").to("dropbox://put?accessToken=XXX&clientIdentifier=XXX&uploadMode=add&localPath=/root/folder1") .to("mock:result"); from("direct:start").to("dropbox://put?accessToken=XXX&clientIdentifier=XXX&uploadMode=add&localPath=/root/folder1&remotePath=/root/folder2") .to("mock:result");
from("direct:start") .setHeader(DropboxConstants.HEADER_PUT_FILE_NAME, constant("myfile.txt")) .to("dropbox://put?accessToken=XXX&clientIdentifier=XXX&uploadMode=add&remotePath=/root/folder2") .to("mock:result");
from("dropbox://search?accessToken=XXX&clientIdentifier=XXX&remotePath=/XXX&query=XXX") .to("mock:result"); from("direct:start") .setHeader("CamelDropboxQuery", constant("XXX")) .to("dropbox://search?accessToken=XXX&clientIdentifier=XXX&remotePath=/XXX") .to("mock:result");