In that commit, AtomicPutCreate takes previous = nil to Atomically create keys
that don't exist. We need a create operation that is atomic to prevent races
between multiple libnetworks creating the same object.
Previously, we just created new KVs with an index of 0 and wrote them to the
datastore. Consul accepts this behaviour and interprets index of 0 as
non-existing, but other data backends do no.
- Add Exists() to the KV interface. SetIndex() should also modify a KV so
that it exists.
- Call SetIndex() from within the GetObject() method on DataStore interface.
- This ensures objects have the updated values for exists and index.
- Add SetValue() to the KV interface. This allows implementers to define
their own method to marshall and unmarshall (as bitseq and allocator have).
- Update existing users of the DataStore (endpoint, network, bitseq,
allocator, ov_network) to new interfaces.
- Fix UTs.
There is no need to update the /etc/hosts files
of containers for endpoints which are created/deleted
in a network whose interface list is empty
Signed-off-by: Jana Radhakrishnan <mrjana@docker.com>
Add a minimal service discover support using service names or
service names qualified with network name. This is achieved
by populating the container's /etc/hosts file record with the
appropriate entries
Signed-off-by: Jana Radhakrishnan <mrjana@docker.com>
1. replaced --net option for service UI with SERVICE.[NETWORK] format
2. Making using of the default network/driver backend support
3. NetworkName and NetworkType from the UI/API can be empty string
and it will be replaced with DefaultNetwork and DefaultDriver
As per the design goals, we wanted to keep libnetwork core free of
handling defaults. Rather, the clients (docker & dnet) must handle the
defaultness of these entities.
Also, since there is no API to get these Default values from the
backend, UI will not handle the default values either. Hence, this falls
under the responsibility of the API layer to handle this specific case.
Signed-off-by: Madhu Venugopal <madhu@docker.com>
Currently store makes use of a static isReservedNetwork check to decide
if a network needs to be stored in the distributed store or not. But it
is better if the check is not static, but be determined based on the
capability of the driver that backs the network.
Hence introducing a new capability mechanism to the driver which it can
express its capability during registration. Making use of first such
capability : Scope. This can be expanded in the future for more such cases.
Signed-off-by: Madhu Venugopal <madhu@docker.com>
* Removed network from being marshalled (it is part of the key anyways)
* Reworked the watch function to handle container-id on endpoints
* Included ContainerInfo to be marshalled which needs to be synchronized
* Resolved multiple race issues by introducing data locks
Signed-off-by: Madhu Venugopal <madhu@docker.com>
Unless it is a forbidden error, libnetwork should not fail a forced
delete of a network and endpoint if the driver throws an error.
Signed-off-by: Madhu Venugopal <madhu@docker.com>
- Package types to define the interfaces libnetwork errors
may implement, so that caller can categorize them.
Signed-off-by: Alessandro Boch <aboch@docker.com>
Refactored the driver api so that is aligns well with the design
of endpoint lifecycle becoming decoupled from the container lifecycle.
Introduced go interfaces to obtain address information during CreateEndpoint.
Go interfaces are also used to get data from driver during join.
This sort of deisgn hides the libnetwork specific type details from drivers.
Another adjustment is to provide a list of interfaces during CreateEndpoint. The
goal of this is many-fold:
* To indicate to the driver that IP address has been assigned by some other
entity (like a user wanting to use their own static IP for an endpoint/container)
and asking the driver to honor this. Driver may reject this configuration
and return an error but it may not try to allocate an IP address and override
the passed one.
* To indicate to the driver that IP address has already been allocated once
for this endpoint by an instance of the same driver in some docker host
in the cluster and this is merely a notification about that endpoint and the
allocated resources.
* In case the list of interfaces is empty the driver is required to allocate and
assign IP addresses for this endpoint.
Signed-off-by: Jana Radhakrishnan <mrjana@docker.com>
- libnetwork cares for list of exposed ports, driver cares
for list of port bindings. At endpoint creation:
- list of exposed ports will be passed as libnetwork otion
- list of port mapping will be passed as driver option
Signed-off-by: Alessandro Boch <aboch@docker.com>
* Modified NB API with self referential var-aarg for future proofing the APIs
* Modified Driver API's option parameter to be a Map of interface{}
Signed-off-by: Madhu Venugopal <madhu@docker.com>
- Removed sandbox key argument for CreateEndpoint.
- Refactored bridge driver code to remove sandbox key.
- Fixed bridge driver code for gaps in ipv6 behavior
observed during docker integration.
- Updated test code, readme code, README.md according
api change.
- Fixed some sandbox issues while testing docker ipv6
integration.
Signed-off-by: Jana Radhakrishnan <mrjana@docker.com>
- To reflect work flow. NewDriver() => ConfigureDriver()
and no NetworkDriver returned.
libnetwork clients would refer to a driver/network type, then
internally controller will retrieve the correspondent driver
instance, but this is not a concern of the clients.
- Remove NetworkDriver interface
- Removed stale blank dependency on bridge in libnetwork_test.go
Signed-off-by: Alessandro Boch <aboch@docker.com>
- This addresses one requirement from Issue #79
- Defined EndpointConfiguration struct for bridge driver
which contains the user's preferred mac address for the
sanbox interface
Signed-off-by: Alessandro Boch <aboch@docker.com>
- Move SanboxInfo and Interface structures in sandbox package
(changed it to Info as per golint)
- Move UUID to new internal pkg types
- Updated .gitignore to ignore IDE project files
Signed-off-by: Alessandro Boch <aboch@docker.com>
- Added api enhancement to pass driver specific config
- Refactored simple bridge driver code for driver specific config
- Added an undocumented option to add non-default bridges without
manual pre-provisioning to help libnetwork testing
- Reenabled libnetwork test to do api testing
- Updated README.md
Signed-off-by: Jana Radhakrishnan <mrjana@docker.com>
Spike Curtis