R SDK for Arvados
-Examples of usage:
+This SDK focuses on providing support for accessing Arvados projects, collections, and the files within collections.
+
+The API is not final and feedback is solicited from users on ways in which it could be improved.
+
+INSTALLATION
+
+1. Install the dependencies
+
+ > install.packages(c('R6', 'httr', 'stringr', 'jsonlite', 'curl', 'XML'))
+
+If needed, you may have to install the supporting packages first. On Linux, these are:
+
+ libxml2-dev, libssl-dev, libcurl4-gnutls-dev or libcurl4-openssl-dev
+
+2. Install the ArvardosR package
+
+ > install.packages('/path/to/ArvadosR_0.0.2.tar.gz', repos = NULL, type="source", dependencies = TRUE)
+
+
+EXAMPLES OF USAGE
---------------------------------------------------------------------------------------------------------------------------------
-#Initialize API:
+#Load Library and Initialize API:
-arv <- Arvados$new("insert_token", "insert_host_name")
+library('ArvadosR')
+arv <- Arvados$new() # uses environment variables ARVADOS_API_TOKEN and ARVADOS_API_HOST
+arv <- Arvados$new("your Arvados token", "example.arvadosapi.com")
--------------------------------------------------------------------------------------------------------------------------------
-#Get collection:
+#Get a collection:
arv$getCollection("uuid")
--------------------------------------------------------------------------------------------------------------------------------
#List collections:
+collectionList <- arv$listCollections(list(list("name", "like", "Test%"))) # offset of 0 and default limit of 100
+collectionList <- arv$listCollections(list(list("name", "like", "Test%")), limit = 10, offset = 2)
-collectionList <- arv$listCollections(list("uuid", "=" "aaaaa-bbbbb-ccccccccccccccc"), limit = 10, offset = 2)
+collectionList$items_available # count of total number of items (may be more than returned due to paging)
+collectionList$items # items which match the filter criteria
+
+#Next example will list all collections even when the number of items is greater than maximum API limit
+
+collectionList <- arv$listAllCollections(list(list("name", "like", "Test%")))
--------------------------------------------------------------------------------------------------------------------------------
-#Delete collection:
+#Delete a collection:
deletedCollection <- arv$deleteCollection("uuid")
--------------------------------------------------------------------------------------------------------------------------------
-#Update collection:
+#Update a collection's metadata:
-updatedCollection <- arv$updateCollection("uuid", list(collection = list(name = "new_name", description = "new_desciption")))
+updatedCollection <- arv$updateCollection("uuid", list(name = "New name", description = "New description"))
--------------------------------------------------------------------------------------------------------------------------------
#Create collection:
-updatedCollection <- arv$createCollection("uuid", list(collection = list(name = "new_name", description = "new_desciption")))
-
---------------------------------------------------------------------------------------------------------------------------------
-
---------------------------------------------------------------------------------------------------------------------------------
+createdCollection <- arv$createCollection(list(name = "Example", description = "This is a test collection"))
-#Collection manipulation:
--------------------------------------------------------------------------------------------------------------------------------
-
+COLLECTION CONTENT MANIPULATION
--------------------------------------------------------------------------------------------------------------------------------
#Create collection object:
-arv <- Arvados$new("insert_token", "insert_host_name")
collection <- Collection$new(arv, "uuid")
--------------------------------------------------------------------------------------------------------------------------------
-#Print content of the collection (directory/folder tree structure)
+#Get list of files
-collection$printFileContent()
-
---------------------------------------------------------------------------------------------------------------------------------
-
-#Get file/folder content as character vector
-
-collection$getFileContent()
+collection$getFileListing()
--------------------------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------------------------
+#Read a table
+
+arvadosFile <- collection$get("myinput.txt")
+arvConnection <- arvadosFile$connection("r")
+mytable <- read.table(arvConnection)
+
+#Write a table
+
+arvadosFile <- collection$create("myoutput.txt")
+arvConnection <- arvadosFile$connection("w")
+write.table(mytable, arvConnection)
+arvadosFile$flush()
+
+--------------------------------------------------------------------------------------------------------------------------------
+
#Read whole file or just a portion of it.
-fileContent <- arvadosFile$read(offset = 1024, length = 512)
+fileContent <- arvadosFile$read()
+fileContent <- arvadosFile$read("text")
+fileContent <- arvadosFile$read("raw", offset = 1024, length = 512)
--------------------------------------------------------------------------------------------------------------------------------
-#Get ArvadosFile or Subcollection size
+#Get ArvadosFile or Subcollection size
size <- arvadosFile$getSizeInBytes()
size <- arvadosSubcollection$getSizeInBytes()
#Create new file in a collection
-#Call structure
-
-collection$createNewFile("relativePath", "fileContent", "fileContentType")
+collection$create(fileNames, optionalRelativePath)
#Example
-collection$createNewFile("cpp/src/main.cpp", "#include<iostream>", "text/html")
+mainFile <- collection$create("main.cpp", "cpp/src/")
+fileList <- collection$create(c("main.cpp", lib.dll), "cpp/src/")
+
+--------------------------------------------------------------------------------------------------------------------------------
+
+#Add existing ArvadosFile or Subcollection to a collection
+
+folder <- Subcollection$new("src")
+file <- ArvadosFile$new("main.cpp")
+folder$add(file)
+
+collection$add(folder, "cpp")
+
+#This examples will add file "main.cpp" in "./cpp/src/" folder if folder exists.
+#If subcollection contains more files or folders they will be added recursively.
--------------------------------------------------------------------------------------------------------------------------------
arvadosFile$write("This is new file content")
--------------------------------------------------------------------------------------------------------------------------------
+
+#Delete file from a collection
+
+collection$remove("location/to/my/file.cpp")
+
+#You can remove both Subcollection and ArvadosFile
+#If subcollection contains more files or folders they will be removed recursively.
+
+#You can also remove multiple files
+
+collection$remove(c("path/to/my/file.cpp", "path/to/other/file.cpp"))
+
+#Delete file or folder from a Subcollection
+
+subcollection <- collection$get("mySubcollection/")
+subcollection$remove("fileInsideSubcollection.exe")
+subcollection$remove("folderInsideSubcollection/")
+
+--------------------------------------------------------------------------------------------------------------------------------
+
+#Move file or folder inside collection
+
+#Directley from collection
+
+collection$move("folder/file.cpp", "file.cpp")
+
+#Or from file
+
+file <- collection$get("location/to/my/file.cpp")
+file$move("newDestination/file.cpp")
+
+#Or from subcollection
+
+subcollection <- collection$get("location/to/folder")
+subcollection$move("newDestination/folder")
+
+#Make sure to include new file name in destination
+#In second example file$move("newDestination/") will not work
+
+--------------------------------------------------------------------------------------------------------------------------------
+WORKING WITH ARVADOS PROJECTS
+--------------------------------------------------------------------------------------------------------------------------------
+
+#Get a project:
+
+arv$getProject("uuid")
+
+--------------------------------------------------------------------------------------------------------------------------------
+
+#List projects:
+
+projects <- arv$listProjects(list(list("owner_uuid", "=", "aaaaa-j7d0g-ccccccccccccccc"))) # list subprojects of a project
+arv$listProjects(list(list("name","like","Example%"))) # list projects which have names beginning with Example
+
+#Next example will list all projects even when the number of items is greater than maximum API limit
+
+collectionList <- arv$listAllProjects(list(list("name","like","Example%")))
+
+--------------------------------------------------------------------------------------------------------------------------------
+
+#Delete a project:
+
+deletedProject <- arv$deleteProject("uuid")
+
+--------------------------------------------------------------------------------------------------------------------------------
+
+#Update project:
+
+updatedProject <- arv$updateProject("uuid", list(name = "new_name", description = "new description"))
+
+--------------------------------------------------------------------------------------------------------------------------------
+
+#Create project:
+
+createdProject <- arv$createProject(list(name = "project_name", description = "project description"))
+
+
+--------------------------------------------------------------------------------------------------------------------------------
+BUILDING THE ARVADOS SDK TARBALL
+--------------------------------------------------------------------------------------------------------------------------------
+
+
+cd arvados/sdk
+R CMD build R
+
+This will create a tarball of the Arvados package in the current directory.
projects / arvados.git / blobdiff