edc_web_components/pages/
new_contract_negotiation_page.rs1use crate::components::PolicyCard;
2use crate::contexts::use_edc_connector_context;
3use crate::models::{DatasetExtraFields, PolicyDefinitionItem};
4use base64::prelude::*;
5use edc_connector_client::EdcConnectorApiVersion;
6use edc_connector_client::types::Protocol;
7use edc_connector_client::types::catalog::{Dataset, DatasetRequest};
8use edc_connector_client::types::contract_negotiation::ContractRequest;
9use edc_connector_client::types::policy::{
10 AtomicConstraint, Constraint, LeftOperand, Operator, Permission, Policy, PolicyKind, Target,
11};
12use patternfly_yew::prelude::*;
13use std::fmt::Debug;
14use yew::platform::spawn_local;
15use yew::prelude::*;
16use yew::suspense::use_future_with;
17
18#[derive(Clone, Debug, PartialEq, Properties)]
19pub struct NewContractNegotiationPageProps {
20 pub originator: String,
21 pub provider_id: String,
22 pub dataset_id: String,
23 pub on_contract_negotiation_id: Callback<String>,
24}
25
26#[component]
27pub fn NewContractNegotiationPage(props: &NewContractNegotiationPageProps) -> Html {
28 html!(
29 <Stack gutter=true>
30 <StackItem>
31 <Split gutter=true>
32 <SplitItem fill=true>
33 <Title level={Level::H3} size={Size::XXLarge}>{ "Negotiate a Contract" }</Title>
34 <p>
35 { "Start a new negotiation on the selected data offer and proposing terms to establish a binding sharing contract." }
36 </p>
37 </SplitItem>
38 </Split>
39 </StackItem>
40 <StackItem>
41 <Suspense>
42 <NewContractNegotiationPageInner
43 originator={props.originator.clone()}
44 provider_id={props.provider_id.clone()}
45 dataset_id={props.dataset_id.clone()}
46 on_contract_negotiation_id={props.on_contract_negotiation_id.clone()}
47 />
48 </Suspense>
49 </StackItem>
50 </Stack>
51 )
52}
53
54#[derive(Clone, Debug, PartialEq, Properties)]
55pub struct NewContractNegotiationPageInnerProps {
56 pub originator: String,
57 pub provider_id: String,
58 pub dataset_id: String,
59 pub on_contract_negotiation_id: Callback<String>,
60}
61
62#[component]
63pub fn NewContractNegotiationPageInner(props: &NewContractNegotiationPageInnerProps) -> HtmlResult {
64 let edc_connector_context = use_edc_connector_context();
65
66 let catalog_dataset = use_future_with(
67 (
68 edc_connector_context.clone(),
69 props.originator.clone(),
70 props.provider_id.clone(),
71 props.dataset_id.clone(),
72 ),
73 |parameters| async move {
74 let (edc_connector_context, originator, provider_id, dataset_id) = (*parameters).clone();
75
76 if let Some(edc_connector_client) = edc_connector_context.get_client() {
77 let dataset_request = DatasetRequest::builder()
78 .id(dataset_id.clone())
79 .counter_party_address(originator)
80 .counter_party_id(provider_id)
81 .protocol(Protocol::default())
82 .build();
83
84 edc_connector_client
85 .catalogue(EdcConnectorApiVersion::V4)
86 .dataset(&dataset_request)
87 .await
88 .ok()
89 .map(|catalog_dataset: Dataset<DatasetExtraFields>| {
90 (
91 catalog_dataset.id().to_string(),
92 catalog_dataset.extra.name.clone(),
93 catalog_dataset.offers().to_vec(),
94 )
95 })
96 } else {
97 None
98 }
99 },
100 )?;
101
102 let catalog_dataset = (*catalog_dataset).clone();
103
104 let selected_offer = use_state_eq(|| None);
105 let signing = use_state(|| false);
106
107 let onchange = use_callback(selected_offer.clone(), |policy: Policy, selected_offer| {
108 selected_offer.set(Some(policy))
109 });
110
111 let onclick = use_callback(
112 (
113 edc_connector_context.clone(),
114 catalog_dataset.clone(),
115 selected_offer.clone(),
116 props.originator.clone(),
117 props.provider_id.clone(),
118 signing.setter(),
119 props.on_contract_negotiation_id.clone(),
120 ),
121 |_,
122 (
123 edc_connector_context,
124 catalog_dataset,
125 selected_offer,
126 originator,
127 provider_id,
128 signing_setter,
129 on_contract_negotiation_id,
130 )| {
131 let edc_connector_context = edc_connector_context.clone();
132 if let Some(policy) = (**selected_offer).clone()
133 && let Some(catalog_dataset) = catalog_dataset
134 {
135 let originator = originator.clone();
136 let provider_id = provider_id.clone();
137 let asset_id = catalog_dataset.0.to_string();
138
139 signing_setter.set(true);
140 let signing_setter = signing_setter.clone();
141 let on_contract_negotiation_id = on_contract_negotiation_id.clone();
142
143 spawn_local(async move {
144 if let Some(edc_client) = edc_connector_context.get_client() {
145 let counter_party_address = originator.clone();
146 let counter_party_id = provider_id.clone();
147
148 log::info!("counter_party_address: {}", counter_party_address);
149 let policy: Policy = policy.clone();
150
151 if let Some(id) = policy.id() {
152 let policy_builder = Policy::builder()
153 .assigner(provider_id)
154 .id(id)
155 .kind(PolicyKind::Offer)
156 .permissions(
157 policy
158 .permissions()
159 .iter()
160 .map(|permission| {
161 Permission::builder()
162 .action(edc_connector_client::types::policy::Action::Simple(
163 "use".to_string(),
164 ))
165 .constraints(
166 permission
167 .constraints()
168 .iter()
169 .map(|constraint| match constraint {
170 Constraint::Atomic(atomic_constraint) => {
171 let left_operand = match &atomic_constraint.left_operand {
172 LeftOperand::Simple(simple) => {
173 LeftOperand::Simple(simple.to_string())
174 }
175 LeftOperand::Id { id } => LeftOperand::Simple(id.to_string()),
176 };
177
178 let operator = match &atomic_constraint.operator {
179 Operator::Simple(simple) => Operator::Simple(simple.to_string()),
180 Operator::Id { id } => Operator::Simple(
181 id.to_string().replace("http://www.w3.org/ns/odrl/2/", ""),
182 ),
183 };
184
185 Constraint::Atomic(AtomicConstraint {
186 left_operand,
187 operator,
188 right_operand: atomic_constraint.right_operand.clone(),
189 })
190 }
191 Constraint::MultiplicityConstraint(multiplicity_constraint) => {
192 Constraint::MultiplicityConstraint(multiplicity_constraint.clone())
193 }
194 })
195 .collect(),
196 )
197 .build()
198 })
199 .collect(),
200 )
201 .prohibitions(policy.prohibitions().to_vec())
202 .obligations(policy.obligations().to_vec())
203 .target(Target::Simple(asset_id));
204
205 let policy = policy_builder.build();
206
207 let new_contract_request = ContractRequest::builder()
208 .protocol(Protocol::new("dataspace-protocol-http:2025-1"))
209 .counter_party_address(&counter_party_address)
210 .counter_party_id(counter_party_id)
211 .policy(policy)
212 .build();
213
214 match edc_client
215 .contract_negotiations(EdcConnectorApiVersion::V4)
216 .initiate(&new_contract_request)
217 .await
218 {
219 Ok(contract_negotiation_id) => {
220 log::info!(
221 "Contract negotiation initiated: {}",
222 contract_negotiation_id.id()
223 );
224
225 on_contract_negotiation_id.emit(contract_negotiation_id.id().to_string());
226 }
227 Err(error) => {
228 log::error!("Error initiating contract negotiation: {}", error);
229 }
230 }
231 };
232 }
233
234 signing_setter.set(false);
235 })
236 }
237 },
238 );
239
240 if let Some(catalog_dataset) = catalog_dataset {
241 let provider_id = props.provider_id.clone();
242 let asset_id = catalog_dataset.0.clone();
243 let asset_name = catalog_dataset.1.clone();
244 let policies = catalog_dataset.2;
245 let disabled = *signing;
246
247 let offers = policies
248 .iter()
249 .filter_map(|policy: &Policy| {
250 if let Some(offer_id) = policy.id().and_then(|policy| policy.split(':').next()) {
251 BASE64_STANDARD
252 .decode(offer_id)
253 .ok()
254 .and_then(|offer_id| String::from_utf8(offer_id).ok())
255 .map(|offer_id| (policy, offer_id))
256 } else {
257 None
258 }
259 })
260 .map(|(policy, _offer_id): (&Policy, String)| {
261 let onchange = onchange.clone();
262 let policy_definition_item = PolicyDefinitionItem::from(policy);
263 let selected = (*selected_offer).as_ref() == Some(policy);
264
265 let policy = policy.clone();
266
267 html!(
268 <PolicyCard
269 {policy_definition_item}
270 {selected}
271 {disabled}
272 on_click={onchange.reform(move |_| policy.clone())}
273 />
274 )
275 });
276
277 let disabled = selected_offer.is_none() || *signing;
278
279 Ok(html!(
280 <>
281 <DescriptionList>
282 <DescriptionGroup term="Provider ID">{ provider_id }</DescriptionGroup>
283 <DescriptionGroup term="Asset ID">{ asset_id }</DescriptionGroup>
284 <DescriptionGroup term="Asset Name">{ asset_name }</DescriptionGroup>
285 <DescriptionGroup term="Offers">
286 <Gallery gutter=true>{ for offers }</Gallery>
287 </DescriptionGroup>
288 </DescriptionList>
289 <Split gutter=true>
290 <SplitItem fill=true />
291 <SplitItem>
292 <Button variant={ButtonVariant::Primary} icon={Icon::Check} {disabled} {onclick}>
293 { "Sign" }
294 </Button>
295 </SplitItem>
296 </Split>
297 </>
298 ))
299 } else {
300 Ok(html!({ "The offer is not available." }))
301 }
302}