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feat: support stream effector (#238)
Signed-off-by: Zixuan Liu <nodeces@gmail.com>
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67 changes: 67 additions & 0 deletions
67
src/main/java/org/casbin/jcasbin/effect/DefaultStreamEffector.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| // Copyright 2021 The casbin Authors. All Rights Reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package org.casbin.jcasbin.effect; | ||
|
|
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| public class DefaultStreamEffector implements StreamEffector { | ||
| private final String expr; | ||
| private boolean done = false; | ||
| private boolean effect = false; | ||
|
|
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| public DefaultStreamEffector(String expr) { | ||
| this.expr = expr; | ||
| } | ||
|
|
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| @Override | ||
| public StreamEffectorResult current() { | ||
| return new DefaultStreamEffectorResult(effect, done); | ||
| } | ||
|
|
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| @Override | ||
| public boolean push(Effect eft, int currentIndex, int policySize) { | ||
| switch (this.expr) { | ||
| case "some(where (p_eft == allow))": | ||
| if (eft == Effect.Allow) { | ||
| this.effect = true; | ||
| this.done = true; | ||
| } | ||
| break; | ||
| case "!some(where (p_eft == deny))": | ||
| this.effect = true; | ||
| if (eft == Effect.Deny) { | ||
| this.effect = false; | ||
| this.done = true; | ||
| } | ||
| break; | ||
| case "some(where (p_eft == allow)) && !some(where (p_eft == deny))": | ||
| if (eft == Effect.Allow) { | ||
| this.effect = true; | ||
| } else if (eft == Effect.Deny) { | ||
| this.effect = false; | ||
| this.done = true; | ||
| } | ||
| break; | ||
| case "priority(p_eft) || deny": | ||
| if (eft != Effect.Indeterminate) { | ||
| this.effect = eft == Effect.Allow; | ||
| this.done = true; | ||
| } | ||
| break; | ||
| default: | ||
| throw new UnsupportedOperationException("unsupported effect"); | ||
| } | ||
|
|
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| return this.done; | ||
| } | ||
| } |
46 changes: 46 additions & 0 deletions
46
src/main/java/org/casbin/jcasbin/effect/DefaultStreamEffectorResult.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| // Copyright 2021 The casbin Authors. All Rights Reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
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| package org.casbin.jcasbin.effect; | ||
|
|
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| public class DefaultStreamEffectorResult implements StreamEffectorResult { | ||
| private boolean done; | ||
| private boolean effect; | ||
|
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| public DefaultStreamEffectorResult(){ | ||
|
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| } | ||
|
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| public DefaultStreamEffectorResult(boolean effect, boolean done) { | ||
| this.effect = effect; | ||
| this.done = done; | ||
| } | ||
|
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| @Override | ||
| public boolean hasEffect() { | ||
| return effect; | ||
| } | ||
|
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| public boolean isDone() { | ||
| return done; | ||
| } | ||
|
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| public void setEffect(boolean effect) { | ||
| this.effect = effect; | ||
| } | ||
|
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| public void setDone(boolean done) { | ||
| this.done = done; | ||
| } | ||
| } |
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21 changes: 21 additions & 0 deletions
21
src/main/java/org/casbin/jcasbin/effect/StreamEffector.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| // Copyright 2021 The casbin Authors. All Rights Reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
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| package org.casbin.jcasbin.effect; | ||
|
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| // StreamEffector provides a stream interface for effector. | ||
| public interface StreamEffector { | ||
| StreamEffectorResult current(); | ||
| boolean push(Effect effect, int currentIndex, int policySize); | ||
| } |
20 changes: 20 additions & 0 deletions
20
src/main/java/org/casbin/jcasbin/effect/StreamEffectorResult.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| // Copyright 2021 The casbin Authors. All Rights Reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
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| package org.casbin.jcasbin.effect; | ||
|
|
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| public interface StreamEffectorResult { | ||
| boolean hasEffect(); | ||
| boolean isDone(); | ||
| } |
21 changes: 21 additions & 0 deletions
21
src/main/java/org/casbin/jcasbin/exception/CasbinEffectorException.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| // Copyright 2018 The casbin Authors. All Rights Reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
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| package org.casbin.jcasbin.exception; | ||
|
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| public class CasbinEffectorException extends RuntimeException { | ||
| public CasbinEffectorException(Throwable throwable) { | ||
| super(throwable); | ||
| } | ||
| } |
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