Golang constraints.MustParse函數代碼示例

func (s *ConstraintsSuite) TestMerge(c *gc.C) {
	con1 := constraints.MustParse("arch=amd64 mem=4G")
	con2 := constraints.MustParse("cpu-cores=42")
	con3 := constraints.MustParse(
		"root-disk=8G container=lxc spaces=space1,^space2 networks=net1,^net2",
	)
	merged, err := constraints.Merge(con1, con2)
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(merged, jc.DeepEquals, constraints.MustParse("arch=amd64 mem=4G cpu-cores=42"))
	merged, err = constraints.Merge(con1)
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(merged, jc.DeepEquals, con1)
	merged, err = constraints.Merge(con1, con2, con3)
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(merged, jc.DeepEquals, constraints.
		MustParse("arch=amd64 mem=4G cpu-cores=42 root-disk=8G container=lxc spaces=space1,^space2 networks=net1,^net2"),
	)
	merged, err = constraints.Merge()
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(merged, jc.DeepEquals, constraints.Value{})
	foo := "foo"
	merged, err = constraints.Merge(constraints.Value{Arch: &foo}, con2)
	c.Assert(err, gc.NotNil)
	c.Assert(err, gc.ErrorMatches, `bad "arch" constraint: "foo" not recognized`)
	c.Assert(merged, jc.DeepEquals, constraints.Value{})
	merged, err = constraints.Merge(con1, con1)
	c.Assert(err, gc.NotNil)
	c.Assert(err, gc.ErrorMatches, `bad "arch" constraint: already set`)
	c.Assert(merged, jc.DeepEquals, constraints.Value{})
}

func (s *BundleDeployCharmStoreSuite) TestDeployBundleApplicationConstrants(c *gc.C) {
	testcharms.UploadCharm(c, s.client, "xenial/wordpress-42", "wordpress")
	testcharms.UploadCharm(c, s.client, "precise/dummy-0", "dummy")
	_, err := s.DeployBundleYAML(c, `
        applications:
            wordpress:
                charm: wordpress
                constraints: mem=4G cores=2
            customized:
                charm: precise/dummy-0
                num_units: 1
                constraints: arch=i386
    `)
	c.Assert(err, jc.ErrorIsNil)
	s.assertCharmsUploaded(c, "cs:precise/dummy-0", "cs:xenial/wordpress-42")
	s.assertApplicationsDeployed(c, map[string]serviceInfo{
		"customized": {
			charm:       "cs:precise/dummy-0",
			constraints: constraints.MustParse("arch=i386"),
		},
		"wordpress": {
			charm:       "cs:xenial/wordpress-42",
			constraints: constraints.MustParse("mem=4G cores=2"),
		},
	})
	s.assertUnitsCreated(c, map[string]string{
		"customized/0": "0",
	})
}

func (s *clientSuite) TestEnableHAPlacement(c *gc.C) {
	placement := []string{"valid"}
	enableHAResult, err := s.enableHA(c, 3, constraints.MustParse("mem=4G"), defaultSeries, placement)
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(enableHAResult.Maintained, gc.DeepEquals, []string{"machine-0"})
	c.Assert(enableHAResult.Added, gc.DeepEquals, []string{"machine-1", "machine-2"})
	c.Assert(enableHAResult.Removed, gc.HasLen, 0)
	c.Assert(enableHAResult.Converted, gc.HasLen, 0)

	machines, err := s.State.AllMachines()
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(machines, gc.HasLen, 3)
	expectedCons := []constraints.Value{
		{},
		constraints.MustParse("mem=4G"),
		constraints.MustParse("mem=4G"),
	}
	expectedPlacement := []string{"", "valid", ""}
	for i, m := range machines {
		cons, err := m.Constraints()
		c.Assert(err, jc.ErrorIsNil)
		c.Check(cons, gc.DeepEquals, expectedCons[i])
		c.Check(m.Placement(), gc.Equals, expectedPlacement[i])
	}
}

func (s *DeployLocalSuite) TestDeployWithFewerPlacement(c *gc.C) {
	err := s.State.SetEnvironConstraints(constraints.MustParse("mem=2G"))
	c.Assert(err, jc.ErrorIsNil)
	serviceCons := constraints.MustParse("cpu-cores=2")
	service, err := juju.DeployService(s.State,
		juju.DeployServiceParams{
			ServiceName: "bob",
			Charm:       s.charm,
			Constraints: serviceCons,
			NumUnits:    3,
			Placement: []*instance.Placement{
				{Scope: s.State.EnvironUUID(), Directive: "valid"},
			},
		})
	c.Assert(err, jc.ErrorIsNil)
	s.assertConstraints(c, service, serviceCons)
	units, err := service.AllUnits()
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(units, gc.HasLen, 3)

	// Check each of the newly added units.
	s.assertAssignedUnit(c, units[0], "0", constraints.MustParse("mem=2G cpu-cores=2"))
	s.assertAssignedUnit(c, units[1], "1", constraints.MustParse("mem=2G cpu-cores=2"))
	s.assertAssignedUnit(c, units[2], "2", constraints.MustParse("mem=2G cpu-cores=2"))
}

func (s *AssignSuite) TestAssignUnitToNewMachineSetsConstraints(c *gc.C) {
	// Set up constraints.
	scons := constraints.MustParse("mem=2G cpu-power=400")
	err := s.wordpress.SetConstraints(scons)
	c.Assert(err, jc.ErrorIsNil)
	econs := constraints.MustParse("mem=4G cpu-cores=2")
	err = s.State.SetModelConstraints(econs)
	c.Assert(err, jc.ErrorIsNil)

	// Unit will take combined service/environ constraints on creation.
	unit, err := s.wordpress.AddUnit()
	c.Assert(err, jc.ErrorIsNil)

	// Change service/env constraints before assigning, to verify this.
	scons = constraints.MustParse("mem=6G cpu-power=800")
	err = s.wordpress.SetConstraints(scons)
	c.Assert(err, jc.ErrorIsNil)
	econs = constraints.MustParse("cpu-cores=4")
	err = s.State.SetModelConstraints(econs)
	c.Assert(err, jc.ErrorIsNil)

	// The new machine takes the original combined unit constraints.
	err = unit.AssignToNewMachine()
	c.Assert(err, jc.ErrorIsNil)
	err = unit.Refresh()
	c.Assert(err, jc.ErrorIsNil)
	mid, err := unit.AssignedMachineId()
	c.Assert(err, jc.ErrorIsNil)
	machine, err := s.State.Machine(mid)
	c.Assert(err, jc.ErrorIsNil)
	mcons, err := machine.Constraints()
	c.Assert(err, jc.ErrorIsNil)
	expect := constraints.MustParse("mem=2G cpu-cores=2 cpu-power=400")
	c.Assert(mcons, gc.DeepEquals, expect)
}

func (s *constraintsValidationSuite) TestServiceConstraints(c *gc.C) {
	charm := s.AddTestingCharm(c, "wordpress")
	service := s.AddTestingService(c, "wordpress", charm)
	for i, t := range setConstraintsTests {
		c.Logf(
			"test %d: %s\nconsToSet: %q\nconsFallback: %q\n",
			i, t.about, t.consToSet, t.consFallback,
		)
		// Set fallbacks as model constraints and verify them.
		err := s.State.SetModelConstraints(constraints.MustParse(t.consFallback))
		c.Check(err, jc.ErrorIsNil)
		econs, err := s.State.ModelConstraints()
		c.Check(econs, jc.DeepEquals, constraints.MustParse(t.effectiveModelCons))
		// Set the service deployment constraints.
		err = service.SetConstraints(constraints.MustParse(t.consToSet))
		c.Check(err, jc.ErrorIsNil)
		u, err := service.AddUnit()
		c.Check(err, jc.ErrorIsNil)
		// New unit deployment constraints get merged with the fallbacks.
		ucons, err := u.Constraints()
		c.Check(err, jc.ErrorIsNil)
		c.Check(*ucons, jc.DeepEquals, constraints.MustParse(t.effectiveUnitCons))
		// Service constraints remain as set.
		scons, err := service.Constraints()
		c.Check(err, jc.ErrorIsNil)
		c.Check(scons, jc.DeepEquals, constraints.MustParse(t.effectiveServiceCons))
	}
}

func (s *serviceSuite) TestSetServiceDeploy(c *gc.C) {
	var called bool
	service.PatchFacadeCall(s, s.client, func(request string, a, response interface{}) error {
		called = true
		c.Assert(request, gc.Equals, "ServicesDeploy")
		args, ok := a.(params.ServicesDeploy)
		c.Assert(ok, jc.IsTrue)
		c.Assert(args.Services, gc.HasLen, 1)
		c.Assert(args.Services[0].CharmUrl, gc.Equals, "charmURL")
		c.Assert(args.Services[0].ServiceName, gc.Equals, "serviceA")
		c.Assert(args.Services[0].Series, gc.Equals, "series")
		c.Assert(args.Services[0].NumUnits, gc.Equals, 2)
		c.Assert(args.Services[0].ConfigYAML, gc.Equals, "configYAML")
		c.Assert(args.Services[0].Constraints, gc.DeepEquals, constraints.MustParse("mem=4G"))
		c.Assert(args.Services[0].ToMachineSpec, gc.Equals, "machineSpec")
		c.Assert(args.Services[0].Networks, gc.DeepEquals, []string{"neta"})
		c.Assert(args.Services[0].Storage, gc.DeepEquals, map[string]storage.Constraints{"data": storage.Constraints{Pool: "pool"}})

		result := response.(*params.ErrorResults)
		result.Results = make([]params.ErrorResult, 1)
		return nil
	})
	err := s.client.ServiceDeploy("charmURL", "serviceA", "series", 2, "configYAML", constraints.MustParse("mem=4G"),
		"machineSpec", nil, []string{"neta"}, map[string]storage.Constraints{"data": storage.Constraints{Pool: "pool"}})
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(called, jc.IsTrue)
}

func (s *DeployLocalSuite) TestDeployForceMachineIdWithContainer(c *gc.C) {
	machine, err := s.State.AddMachine("quantal", state.JobHostUnits)
	c.Assert(err, gc.IsNil)
	c.Assert(machine.Id(), gc.Equals, "0")
	envCons := constraints.MustParse("mem=2G")
	err = s.State.SetEnvironConstraints(envCons)
	c.Assert(err, gc.IsNil)
	serviceCons := constraints.MustParse("cpu-cores=2")
	service, err := juju.DeployService(s.State,
		juju.DeployServiceParams{
			ServiceName:   "bob",
			Charm:         s.charm,
			Constraints:   serviceCons,
			NumUnits:      1,
			ToMachineSpec: fmt.Sprintf("%s:0", instance.LXC),
		})
	c.Assert(err, gc.IsNil)
	s.assertConstraints(c, service, serviceCons)
	units, err := service.AllUnits()
	c.Assert(err, gc.IsNil)
	c.Assert(units, gc.HasLen, 1)

	// The newly created container will use the constraints.
	id, err := units[0].AssignedMachineId()
	c.Assert(err, gc.IsNil)
	machine, err = s.State.Machine(id)
	c.Assert(err, gc.IsNil)
	machineCons, err := machine.Constraints()
	c.Assert(err, gc.IsNil)
	unitCons, err := units[0].Constraints()
	c.Assert(err, gc.IsNil)
	c.Assert(machineCons, gc.DeepEquals, *unitCons)
}

func (s *DeployLocalSuite) TestDeployWithPlacement(c *gc.C) {
	machine, err := s.State.AddMachine("quantal", state.JobHostUnits)
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(machine.Id(), gc.Equals, "0")
	err = s.State.SetEnvironConstraints(constraints.MustParse("mem=2G"))
	c.Assert(err, jc.ErrorIsNil)
	serviceCons := constraints.MustParse("cpu-cores=2")
	service, err := juju.DeployService(s.State,
		juju.DeployServiceParams{
			ServiceName: "bob",
			Charm:       s.charm,
			Constraints: serviceCons,
			NumUnits:    3,
			Placement: []*instance.Placement{
				{Scope: s.State.EnvironUUID(), Directive: "valid"},
				{Scope: "#", Directive: "0"},
				{Scope: "lxc", Directive: "1"},
			},
			ToMachineSpec: "will be ignored",
		})
	c.Assert(err, jc.ErrorIsNil)
	s.assertConstraints(c, service, serviceCons)
	units, err := service.AllUnits()
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(units, gc.HasLen, 3)

	// Check each of the newly added units.
	s.assertAssignedUnit(c, units[0], "1", constraints.MustParse("mem=2G cpu-cores=2"))
	s.assertAssignedUnit(c, units[1], "0", constraints.Value{})
	s.assertAssignedUnit(c, units[2], "1/lxc/0", constraints.MustParse("mem=2G cpu-cores=2"))
}

func (s *ConstraintsSuite) TestWithout(c *gc.C) {
	for i, t := range withoutTests {
		c.Logf("test %d", i)
		initial := constraints.MustParse(t.initial)
		final := constraints.Without(initial, t.without...)
		c.Check(final, jc.DeepEquals, constraints.MustParse(t.final))
	}
}

func (s *environSuite) TestConstraintsValidatorMerge(c *gc.C) {
	validator := s.constraintsValidator(c)
	cons, err := validator.Merge(
		constraints.MustParse("mem=3G arch=amd64"),
		constraints.MustParse("instance-type=D1"),
	)
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(cons.String(), gc.Equals, "instance-type=D1")
}

func (s *localServerSuite) TestConstraintsMerge(c *gc.C) {
	env := s.Open(c)
	validator, err := env.ConstraintsValidator()
	c.Assert(err, gc.IsNil)
	consA := constraints.MustParse("arch=amd64 mem=1G root-disk=10G")
	consB := constraints.MustParse("instance-type=m1.small")
	cons, err := validator.Merge(consA, consB)
	c.Assert(err, gc.IsNil)
	c.Assert(cons, gc.DeepEquals, constraints.MustParse("instance-type=m1.small"))
}

func (t *localServerSuite) TestConstraintsMerge(c *gc.C) {
	env := t.Prepare(c)
	validator, err := env.ConstraintsValidator()
	c.Assert(err, jc.ErrorIsNil)
	consA := constraints.MustParse("arch=amd64 mem=1G cpu-power=10 cpu-cores=2 tags=bar")
	consB := constraints.MustParse("arch=i386 instance-type=m1.small")
	cons, err := validator.Merge(consA, consB)
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(cons, gc.DeepEquals, constraints.MustParse("arch=i386 instance-type=m1.small tags=bar"))
}

func (s *validationSuite) TestMergeError(c *gc.C) {
	validator := constraints.NewValidator()
	validator.RegisterConflicts([]string{"instance-type"}, []string{"mem"})
	consFallback := constraints.MustParse("instance-type=foo mem=4G")
	cons := constraints.MustParse("cores=2")
	_, err := validator.Merge(consFallback, cons)
	c.Assert(err, gc.ErrorMatches, `ambiguous constraints: "instance-type" overlaps with "mem"`)
	_, err = validator.Merge(cons, consFallback)
	c.Assert(err, gc.ErrorMatches, `ambiguous constraints: "instance-type" overlaps with "mem"`)
}

func (s *environSuite) TestConstraintsValidatorVocabulary(c *gc.C) {
	validator := s.constraintsValidator(c)
	_, err := validator.Validate(constraints.MustParse("arch=armhf"))
	c.Assert(err, gc.ErrorMatches,
		"invalid constraint value: arch=armhf\nvalid values are: \\[amd64\\]",
	)
	_, err = validator.Validate(constraints.MustParse("instance-type=t1.micro"))
	c.Assert(err, gc.ErrorMatches,
		"invalid constraint value: instance-type=t1.micro\nvalid values are: \\[D1 Standard_D1\\]",
	)
}