community.general.maven_artifact module – Downloads an Artifact from a Maven Repository

Note

This module is part of the community.general collection (version 4.8.1).

You might already have this collection installed if you are using the ansible package. It is not included in ansible-core. To check whether it is installed, run ansible-galaxy collection list.

To install it, use: ansible-galaxy collection install community.general.

To use it in a playbook, specify: community.general.maven_artifact.

Synopsis

  • Downloads an artifact from a maven repository given the maven coordinates provided to the module.

  • Can retrieve snapshots or release versions of the artifact and will resolve the latest available version if one is not available.

Requirements

The below requirements are needed on the host that executes this module.

  • lxml

  • boto if using a S3 repository (s3://…)

Parameters

Parameter

Comments

artifact_id

string / required

The maven artifactId coordinate

attributes

aliases: attr

string

added in 2.3 of ansible.builtin

The attributes the resulting filesystem object should have.

To get supported flags look at the man page for chattr on the target system.

This string should contain the attributes in the same order as the one displayed by lsattr.

The = operator is assumed as default, otherwise + or - operators need to be included in the string.

checksum_alg

string

added in 3.2.0 of community.general

If md5, checksums will use the MD5 algorithm. This is the default.

If sha1, checksums will use the SHA1 algorithm. This can be used on systems configured to use FIPS-compliant algorithms, since MD5 will be blocked on such systems.

Choices:

  • md5 ← (default)

  • sha1

classifier

string

The maven classifier coordinate

client_cert

path

added in 1.3.0 of community.general

PEM formatted certificate chain file to be used for SSL client authentication.

This file can also include the key as well, and if the key is included, client_key is not required.

client_key

path

added in 1.3.0 of community.general

PEM formatted file that contains your private key to be used for SSL client authentication.

If client_cert contains both the certificate and key, this option is not required.

dest

path / required

The path where the artifact should be written to

If file mode or ownerships are specified and destination path already exists, they affect the downloaded file

directory_mode

string

Filesystem permission mode applied recursively to dest when it is a directory.

extension

string

The maven type/extension coordinate

Default: “jar”

force_basic_auth

boolean

added in 0.2.0 of community.general

httplib2, the library used by the uri module only sends authentication information when a webservice responds to an initial request with a 401 status. Since some basic auth services do not properly send a 401, logins will fail. This option forces the sending of the Basic authentication header upon initial request.

Choices:

  • no ← (default)

  • yes

group

string

Name of the group that should own the filesystem object, as would be fed to chown.

group_id

string / required

The Maven groupId coordinate

headers

dictionary

Add custom HTTP headers to a request in hash/dict format.

keep_name

boolean

If yes, the downloaded artifact’s name is preserved, i.e the version number remains part of it.

This option only has effect when dest is a directory and version is set to latest or version_by_spec is defined.

Choices:

  • no ← (default)

  • yes

mode

raw

The permissions the resulting filesystem object should have.

For those used to /usr/bin/chmod remember that modes are actually octal numbers. You must either add a leading zero so that Ansible’s YAML parser knows it is an octal number (like 0644 or 01777) or quote it (like '644' or '1777') so Ansible receives a string and can do its own conversion from string into number.

Giving Ansible a number without following one of these rules will end up with a decimal number which will have unexpected results.

As of Ansible 1.8, the mode may be specified as a symbolic mode (for example, u+rwx or u=rw,g=r,o=r).

If mode is not specified and the destination filesystem object does not exist, the default umask on the system will be used when setting the mode for the newly created filesystem object.

If mode is not specified and the destination filesystem object does exist, the mode of the existing filesystem object will be used.

Specifying mode is the best way to ensure filesystem objects are created with the correct permissions. See CVE-2020-1736 for further details.

owner

string

Name of the user that should own the filesystem object, as would be fed to chown.

password

aliases: aws_secret_access_key

string

The password to authenticate with to the Maven Repository. Use AWS secret access key of the repository is hosted on S3

repository_url

string

The URL of the Maven Repository to download from.

Use s3://… if the repository is hosted on Amazon S3, added in version 2.2.

Use file://… if the repository is local, added in version 2.6

Default: “https://repo1.maven.org/maven2”

selevel

string

The level part of the SELinux filesystem object context.

This is the MLS/MCS attribute, sometimes known as the range.

When set to _default, it will use the level portion of the policy if available.

serole

string

The role part of the SELinux filesystem object context.

When set to _default, it will use the role portion of the policy if available.

setype

string

The type part of the SELinux filesystem object context.

When set to _default, it will use the type portion of the policy if available.

seuser

string

The user part of the SELinux filesystem object context.

By default it uses the system policy, where applicable.

When set to _default, it will use the user portion of the policy if available.

state

string

The desired state of the artifact

Choices:

  • present ← (default)

  • absent

timeout

integer

Specifies a timeout in seconds for the connection attempt

Default: 10

unsafe_writes

boolean

added in 2.2 of ansible.builtin

Influence when to use atomic operation to prevent data corruption or inconsistent reads from the target filesystem object.

By default this module uses atomic operations to prevent data corruption or inconsistent reads from the target filesystem objecs, but sometimes systems are configured or just broken in ways that prevent this. One example is docker mounted filesystem objects, which cannot be updated atomically from inside the container and can only be written in an unsafe manner.

This option allows Ansible to fall back to unsafe methods of updating filesystem objects when atomic operations fail (however, it doesn’t force Ansible to perform unsafe writes).

IMPORTANT! Unsafe writes are subject to race conditions and can lead to data corruption.

Choices:

  • no ← (default)

  • yes

username

aliases: aws_secret_key

string

The username to authenticate as to the Maven Repository. Use AWS secret key of the repository is hosted on S3

validate_certs

boolean

If no, SSL certificates will not be validated. This should only be set to no when no other option exists.

Choices:

  • no

  • yes ← (default)

verify_checksum

string

If never, the MD5/SHA1 checksum will never be downloaded and verified.

If download, the MD5/SHA1 checksum will be downloaded and verified only after artifact download. This is the default.

If change, the MD5/SHA1 checksum will be downloaded and verified if the destination already exist, to verify if they are identical. This was the behaviour before 2.6. Since it downloads the checksum before (maybe) downloading the artifact, and since some repository software, when acting as a proxy/cache, return a 404 error if the artifact has not been cached yet, it may fail unexpectedly. If you still need it, you should consider using always instead - if you deal with a checksum, it is better to use it to verify integrity after download.

always combines download and change.

Choices:

  • never

  • download ← (default)

  • change

  • always

version

string

The maven version coordinate

Mutually exclusive with version_by_spec.

version_by_spec

string

added in 0.2.0 of community.general

The maven dependency version ranges.

See supported version ranges on https://cwiki.apache.org/confluence/display/MAVENOLD/Dependency%2BMediation%2Band%2BConflict%2BResolution

The range type “(,1.0],[1.2,)” and “(,1.1),(1.1,)” is not supported.

Mutually exclusive with version.

Examples

- name: Download the latest version of the JUnit framework artifact from Maven Central
  community.general.maven_artifact:
    group_id: junit
    artifact_id: junit
    dest: /tmp/junit-latest.jar

- name: Download JUnit 4.11 from Maven Central
  community.general.maven_artifact:
    group_id: junit
    artifact_id: junit
    version: 4.11
    dest: /tmp/junit-4.11.jar

- name: Download an artifact from a private repository requiring authentication
  community.general.maven_artifact:
    group_id: com.company
    artifact_id: library-name
    repository_url: 'https://repo.company.com/maven'
    username: user
    password: pass
    dest: /tmp/library-name-latest.jar

- name: Download an artifact from a private repository requiring certificate authentication
  community.general.maven_artifact:
    group_id: com.company
    artifact_id: library-name
    repository_url: 'https://repo.company.com/maven'
    client_cert: /path/to/cert.pem
    client_key: /path/to/key.pem
    dest: /tmp/library-name-latest.jar

- name: Download a WAR File to the Tomcat webapps directory to be deployed
  community.general.maven_artifact:
    group_id: com.company
    artifact_id: web-app
    extension: war
    repository_url: 'https://repo.company.com/maven'
    dest: /var/lib/tomcat7/webapps/web-app.war

- name: Keep a downloaded artifact's name, i.e. retain the version
  community.general.maven_artifact:
    version: latest
    artifact_id: spring-core
    group_id: org.springframework
    dest: /tmp/
    keep_name: yes

- name: Download the latest version of the JUnit framework artifact from Maven local
  community.general.maven_artifact:
    group_id: junit
    artifact_id: junit
    dest: /tmp/junit-latest.jar
    repository_url: "file://{{ lookup('env','HOME') }}/.m2/repository"

- name: Download the latest version between 3.8 and 4.0 (exclusive) of the JUnit framework artifact from Maven Central
  community.general.maven_artifact:
    group_id: junit
    artifact_id: junit
    version_by_spec: "[3.8,4.0)"
    dest: /tmp/

Authors

  • Chris Schmidt (@chrisisbeef)