###RESTful API for InterSystems Cache Development

cdev allows for development on InterSystems Cache/Ensemble/HealthShare systems outside of Cache Studio.

##Limitations

• cdev only runs on Cache 2014.1 and later, and the Cache Instance must be running on Windows. This is because %Compiler.UDL.TextServices, the internal API that it relies on has not yet been ported to other operating systems. InterSystems development is aware of this limitation.

##Installation

To install the server-side components, run this block of text in the terminal, with a user who has %All:

zn "%SYS" s b=##class(SYS.Database).%OpenId($zu(12,"cachelib")),bk=b.ReadOnly,b.ReadOnly=0 d b.%Save() s s="Github_CDEV",l="/brandonhorst/cdev-server/master/",jf="json/",jn="%CDEV.JSON.",f="base,boolean,list,null,number,object,stream",if="includes.inc",sn="%CDEV.Server",u="/csp/sys/dev" d ##class(Security.SSLConfigs).Create(s),##class(Security.Applications).Copy("/csp/sys",u,"CDev REST Application"),##class(Security.Applications).Get(u,.p) s p("DispatchClass")=sn d ##class(Security.Applications).Modify(u,.p) s r=##class(%Net.HttpRequest).%New(),r.Server="raw.github.com",r.Https=1,r.SSLConfiguration=s f i=1:1:$l(f,",") { s t=$p(f,",",i),tn=jn_$zcvt($e(t),"U")_$e(t,2,99) d r.Get(l_jf_t_".cls") s d=$replace(r.HttpResponse.Data.Read(),$c(10),$c(13,10)) d ##class(%Compiler.UDL.TextServices).SetTextFromString(,tn,d),$system.OBJ.Compile(tn,"c-d") } d r.Get(l_jf_if) s i=##class(%Routine).%New(jn_$zcvt($e(if),"U")_$e(if,2,*-3)_$zcvt($e(if,*-2,99),"U")) d i.CopyFromAndSave(r.HttpResponse.Data),r.Get(l_$zcvt(sn,"O","URL")_".cls") s d=$replace(r.HttpResponse.Data.Read(),$c(10),$c(13,10)) d ##class(%Compiler.UDL.TextServices).SetTextFromString(,sn,d),$system.OBJ.Compile(sn,"c-d") s b.ReadOnly=bk d b.%Save()

If you don't want to piece through that absurd mess, here is what it does:

• Changes to the %SYS namespace
• Makes the CACHELIB database writable
• Creates an empty SSL Configuration called Github_CDEV to connect to https://raw.github.com
• Installs and compiles the Cache-Simple-JSON-Classes tools from the master branch
• Installs and compiles %CDEV.Server.cls, the REST page
• Reverts the CACHELIB database to its previous state

##API Reference

The API follows general RESTful guidelines. The following APIs are fairly stable, but anything is subject to change.

All data is transferred using JSON.

###Objects

All objects have an id property, which contain a reference to a full copy of that object. If you GET *id* it will give you all available information about that object.

Paths should never be generated on the fly. The only path guaranteed not to change is /. Everything else should make use of documented references, not assumptions about URL structure.

####Namespace

{
	id:      Hyperlink to this namespace
	name:    Human-readable name for this namespace. Uppercase. ex. USER, %SYS...
	files:   Hyperlink to list access files in this namespace
	xml:     Hyperlink to access xml files for this namespace
	queries: Hyperlink to access SQL Queries for this namespace
}

####File

{
	id: 	 Hyperlink to this file
	name:    Human-readable name for this file. Always contains a path extension, which is always lowercase. ex. Sample.Person.cls, LDAP.mac
	xml:     Hyperlink to download generated files. Note that if this file has never been compiled with the `k` flag, there will likely be none.
	url:     URL to view this file in a browser (For CSP Pages, Zen Pages, and Web Services).
	content: Content of the file, either UDL (Class code) or ObjectScript. Always uses CR-LF line terminators.
}

####FileOperation

{
	success:  Boolean
	errors:   String or [ String ] of errors. Only supplied if !success.
	file:     File
}

####XML

{
	id:      Hyperlink to this XML file
	content: XML representation of this file. Always uses CR-LF line terminators.
}

####FileOperation

{
	success:  Boolean
	errors:   String or [ String ] of errors. Only supplied if !success.
	xml:      XML
	file:     File
}

###Calls

####GET /

Entry point for the API. Call this to get links to all other

######Returns { version: SemVer with leading v representing the current version. ex. v0.0.3. namespaces: Hyperlink to namespaces }

####GET root.namespaces

Get all namespace on the instance, or one specific namespace by name.

######Returns [ Namespace ]

######Parameters Accepts an optional URL parameter, name which will only return the Namespace where name == *name*

####GET root.namespaces[n].files Get all files in that namespace, or one specific file by name.

######Returns [ File ]

Content is not included. Request file.id to get it.

######Parameters Accepts an optional URL parameter, name which will only return the File where name == *name*

####GET root.namespaces[n].files[n].generated Get the files generated by this class compiling. Note that if this file has never been compiled with the k flag, there will likely be none.

######Returns [ File ]

Content is not included. Request file.id to get it.

####GET root.namespaces[n].files[n].xml Get the XML representation (Export) of a file.

######Returns [ XML ]

####PUT root.namespaces[n].files[n].xml Put the XML representation of a file (Load). Note that this does not compile anything.

######Accepts XML

######Returns [ XMLOperation ]

####PUT root.namespaces[n].xml Put the XML representation of a file (Load). Note that this does not compile anything.

######Accepts XML

######Returns [ XMLOperation ]

####PUT root.namespaces[n].files Upload a new file (overwrite if it already exists)

######Accepts File

Only name and content are used.

######Returns FileOperation

####PUT root.namespaces[n].files[n].id Overwrite the file specified by the file object

######Accepts File

Only name and `content are used.

######Returns FileOperation

####POST root.namespaces[n].files[n].id Perform some action on the specified file

######Accepts { "action": "compile" "spec": Only if action=="compile". Compilation spec, as specified by %SYSTEM.OBJ::ShowQualifiers and ::ShowFlags }

######Returns FileOperation

##Goals

• Allow for execution of SQL Queries (implemented, not yet documented)
• Access query plans and cached queries (in progress)
• Get, set, and kill globals
• Allow for execution of arbitrary code (batch)

####Long-term goals (related to Cache but part of separate projects)

• Integration with Sublime Text - SublimeCache
• Some sort of integration with Github
• Web Sockets implementation to allow for cross-platform Terminal usage

##Subtrees

• The json subtree is from Cache-Simple-JSON-Classes

##See Also

• cdev-client-py - a Python Client
• SublimeCache - a Sublime Text 3 Package using cdev-client-py