github.com/mysteriumnetwork/node@v0.0.0-20240516044423-365054f76801/core/discovery/reducer/proposal.go (about)

     1  /*
     2   * Copyright (C) 2019 The "MysteriumNetwork/node" Authors.
     3   *
     4   * This program is free software: you can redistribute it and/or modify
     5   * it under the terms of the GNU General Public License as published by
     6   * the Free Software Foundation, either version 3 of the License, or
     7   * (at your option) any later version.
     8   *
     9   * This program is distributed in the hope that it will be useful,
    10   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    11   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    12   * GNU General Public License for more details.
    13   *
    14   * You should have received a copy of the GNU General Public License
    15   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    16   */
    17  
    18  package reducer
    19  
    20  import (
    21  	"github.com/mysteriumnetwork/node/market"
    22  )
    23  
    24  // ProviderID selects provider id value from proposal
    25  func ProviderID(proposal market.ServiceProposal) interface{} {
    26  	return proposal.ProviderID
    27  }
    28  
    29  // ServiceType selects service type from proposal
    30  func ServiceType(proposal market.ServiceProposal) interface{} {
    31  	return proposal.ServiceType
    32  }
    33  
    34  // Location selects service location from proposal
    35  func Location(proposal market.ServiceProposal) interface{} {
    36  	return proposal.Location
    37  }
    38  
    39  // LocationCountry selects location country from proposal
    40  func LocationCountry(proposal market.ServiceProposal) interface{} {
    41  	return proposal.Location.Country
    42  }
    43  
    44  // LocationType selects location type from proposal
    45  func LocationType(proposal market.ServiceProposal) interface{} {
    46  	return proposal.Location.IPType
    47  }
    48  
    49  // AccessPolicy returns a matcher for checking if proposal allows given access policy
    50  func AccessPolicy(id, source string) func(market.ServiceProposal) bool {
    51  	return func(proposal market.ServiceProposal) bool {
    52  		// These proposals accepts all access lists
    53  		if proposal.AccessPolicies == nil {
    54  			return false
    55  		}
    56  
    57  		var match bool
    58  		for _, policy := range *proposal.AccessPolicies {
    59  			match = (id == "" || policy.ID == id) &&
    60  				(source == "" || policy.Source == source)
    61  			if match {
    62  				break
    63  			}
    64  		}
    65  		return match
    66  	}
    67  }
    68  
    69  // Unsupported filters out unsupported proposals
    70  func Unsupported() func(market.ServiceProposal) bool {
    71  	return func(proposal market.ServiceProposal) bool {
    72  		return proposal.IsSupported()
    73  	}
    74  }