I need to host several jar files in maven repository. There are may free web hosting companies which provide free web space. Do I need some special configuration to create a simple maven repository and upload maven jars?
In essence, a Maven repository is simply a place to store and retrieve files from. Nowadays, this is mainly done via the HTTP protocol. In an over-simplified example (as it was in the early days of Maven), things were simply hosted in a web server - you would deploy them via an HTTP PUT and retrieve them over HTTP GET. As things evolved, Maven artifact repository managers evolved and they started keeping record of various kinds of metadata.
As an over-simplified answer: if you have a proper <distributionManagement/> and <repositories/> section in your pom.xml and you can issue HTTP PUT and HTTP GET operations against a web server, then you can store these artifacts in a web server, if you really don't want to use an artifact repository manager (which is not really advisable, but hey, who am I to stop you?!). Clearly, this example doesn't cover adding credentials (which is handled by the Maven settings.xml's <servers/> id mappings to <repository/> id-s.
If your free hosting service allows you to install an artifact repository manager, you should consider picking one and installing it.
Related
I see several options:
directly in pom.xml
in company super-pom
in settings.xml (global or user)
in a profile or directly (in settings.xml or pom.xml)
We want our Jenkins to push artifacts to internal repository, and developers to pull missing artifacts from there.
If I put the repository URL in pom.xml, and later the internal repository is moved to a different address, the released versions will all have a broken link.
Super-pom saves some repetition, but in a clean setup you need to somehow know where the repository is to find the parent POM — to tell you where the repository is.
Having the URL in settings allows one to change it without modifying the artifacts, but there are two problems:
build will fail due to unresolved dependencies, if maven settings have no reference to the internal repo
developers have to update their settings.xml files manually
I'm also unsure about the merits of putting repository configuration in profiles. I know it let's you easily switch the repositories on and off, but shouldn't the -o option and snapshot resolution settings be enough for most uses?
What about using a different repository (e.g. with instrumented classes) for integration tests?
Configure a single repository in the users ${HOME}/.m2/settings.xml and configure other needed repositories in your appropriate repository manager either Nexus, Artifactory or Archiva. In Jenkins there is the Config File Provider plugin which exactly handles such situations in a very convinient way.
If you want to have repeatable builds and good control over your organization internally, use a repository manager and use a mirrorOf entry in everyone’s settings.xml to point at that url.
If you are exposing your source and want to make it easy for others to
build, then consider adding a repository entry to your POM, but don’t
pick a URL lightly, think long-term, and use a URL that will always be
under your control.
http://blog.sonatype.com/2009/02/why-putting-repositories-in-your-poms-is-a-bad-idea/
I have a central Maven repository which is shared by more than one Projects within the Company LAN. Now, I need to have an artifact which is licensed for a single Project, to be placed in the shared repository.
Is it possible set authorized access to that artifact, the credential can ideally be in the pom file of the desired project.
Any better solution is more than welcome.
Maven doesn't handle access rights in repositories, since it's just a client fetching data from a server. If you're using a repository manager, read its documentation. If you're just hosting files behind an Apache HTTPD server, then configure HTTPD.
Alternatively, you could move that file in a separate repository, and configure just one project's POM to use it. This doesn't fix the fact that the repository will continue to be public, so other projects/teams could get to it if they really want to.
How can I insert artefact in archiva not through its web interface.
It is possible to upload artifacts using maven.
Please refer to the Archiva Users Guide, Section Deploying to Repository for the details.
The following methods are available:
upload via the user interface (I presume this is the one you refer to as the web interface)
connect via any WebDAV client at http://localhost:8080/archiva/repository/repo-name (adjust according to your configuration)
use HTTP PUT with basic authentication to the same location as the WebDAV URL (this is the method that other tools like Maven, Ivy, etc. would use)
drop the file into the correct place in the file system and wait for Archiva's scanner to pick up the changed artefact
As Torsten's answer indicates, uploading using Maven's deploy phase or deploy:deploy-file goals (or equivalent from another build tool) is likely what you want since it will take care of constructing the correct path for the artefact and pushing any associated metadata, assuming you are using Archiva as a Maven artefact repository.
You have an upload screen tru the web ui.
See http://www.youtube.com/watch?v=LSXe26inf0Y
We have recently decided to use Maven as build system. I'm responsible to migrate all the projects from Ant to Maven. We also decided to use Apache Archiva to configure an internal repository in the company.
I see that Archiva create two repositories by default (internal and snapshots). I also see that it configures the internal repository to proxy the central and java.net repositories.
Are there some best practices regarding Archiva configuration?
In the Archiva documentation, there is a possibility to configure Maven to use only the internal repository and then access the remote repository through the internal repository. What do you think about this option?
Thanks for your help
A Maven repository manager is essential to support Enterprise Maven development. The Maven installer is merely a bootstrap, running Maven for the first time downloads everything it needs from the Maven Central repository in order to compile your project.
The benefits of using a Maven repository aree documented elsewhere but I'll summarize:
Efficiency. Repository acts as a cache for Maven Central artifacts
Resilience. Repository protects against remote repository failures or lack of internet connection
Repeatability. Storing common artifacts centrally, avoids shared build failures caused by developers maintaining their own local repositories.
Audit. If all 3rd party libraries used by development come from a single entry point in the build process one can assess how often they're used (based on download log files) and what kinds of licensing conditions apply.
To that end I'd encourage you to use the following Archiva features:
Locking down to only use Archiva. Configure Maven clients download everything from Archiva.
Virtual repositories for each team. Configure all the remote repositories used by teams centrally in Archiva instead of leaving the details to the teams themselves.
PS
I use Nexus for my Maven repository management, but the same concepts apply.
According to the Maven documentation:
You can force Maven to use a single repository by having it mirror all repository requests. The repository must contain all of the desired artifacts, or be able to proxy the requests to other repositories. This setting is most useful when using an internal company repository with the Maven Repository Manager to proxy external requests.
To achieve this, set mirrorOf to *.
This StackOverflow question also suggests that setting mirrorOf is sufficient to block an external repository, so why does the Sonatype documentation suggest overloading central with an unreachable URL?
The bogus URL is really irrelevant - you can set it to the original one if you need to, or the URL of your repository manager - as long as the mirrorOf is applicable, it won't be used.
The reason these examples redefine central is to set policies on artifact requests to the default repositories. By default, Maven does not enable snapshot requests to central, and uses default update and checksum policies. Redeclaring central allows these to be overridden - in this case, to enable snapshot artifacts and plugins, and the mirror then redirects all of these to the repository manager. This avoids the need to declare the repositories in your POM (as long as all users have their settings correct).
I wrote that so I can tell you what I was thinking ;-)
The central repository definition needs to be updated to enable snapshot retrieval for at least one repo, otherwise Maven won't even ask the repository manager (pointed to by the mirrorOf) for any snapshots.
While not required, I like to change the definition of the url to be an invalid one also so if there is a misconfiguration somewhere else in the system, it becomes immediately obvious what is happening. Otherwise Maven may still reach out to Central and mask the problems. It's essentially a fail-fast setup.
There's more information on this topic in an old blog I wrote
maven needs project dependencies to be available locally for it to run. It does not care about how it is made available - whether manually installed (using mvn install:install-file), through a mirror or by from central repository. It will fail to run if it is unable to find dependencies.
The sonatype documentation that you are referring to is on using nexus to mirror/proxy repositories. The url specified should be a valid nexus url and cannot be unreachable.
The same is suggested in the SO question as well.